結果
| 問題 | No.2166 Paint and Fill |
| ユーザー |
 maroon_kuri
|
| 提出日時 | 2023-02-26 03:39:42 |
| 言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
| 結果 |
AC
|
| 実行時間 | 2,032 ms / 10,000 ms |
| コード長 | 34,112 bytes |
| コンパイル時間 | 7,343 ms |
| コンパイル使用メモリ | 318,848 KB |
| 実行使用メモリ | 332,140 KB |
| 最終ジャッジ日時 | 2024-09-13 20:21:11 |
| 合計ジャッジ時間 | 61,082 ms |
|
ジャッジサーバーID （参考情報） |
judge2 / judge5 |
（要ログイン）
テストケース
テストケース表示| 入力 | 結果 | 実行時間 実行使用メモリ |
|---|---|---|
| testcase_00 | AC | 53 ms
44,484 KB |
| testcase_01 | AC | 388 ms
56,320 KB |
| testcase_02 | AC | 850 ms
173,376 KB |
| testcase_03 | AC | 72 ms
48,000 KB |
| testcase_04 | AC | 73 ms
47,872 KB |
| testcase_05 | AC | 72 ms
47,812 KB |
| testcase_06 | AC | 73 ms
47,872 KB |
| testcase_07 | AC | 73 ms
47,940 KB |
| testcase_08 | AC | 1,009 ms
187,760 KB |
| testcase_09 | AC | 990 ms
187,764 KB |
| testcase_10 | AC | 987 ms
187,876 KB |
| testcase_11 | AC | 992 ms
187,672 KB |
| testcase_12 | AC | 985 ms
187,820 KB |
| testcase_13 | AC | 2,019 ms
332,140 KB |
| testcase_14 | AC | 2,017 ms
332,116 KB |
| testcase_15 | AC | 2,015 ms
332,008 KB |
| testcase_16 | AC | 2,032 ms
332,000 KB |
| testcase_17 | AC | 2,022 ms
332,000 KB |
| testcase_18 | AC | 1,964 ms
328,604 KB |
| testcase_19 | AC | 1,998 ms
328,488 KB |
| testcase_20 | AC | 1,874 ms
315,456 KB |
| testcase_21 | AC | 1,824 ms
312,876 KB |
| testcase_22 | AC | 1,669 ms
285,016 KB |
| testcase_23 | AC | 1,841 ms
315,324 KB |
| testcase_24 | AC | 1,805 ms
312,404 KB |
| testcase_25 | AC | 53 ms
44,488 KB |
| testcase_26 | AC | 53 ms
44,524 KB |
| testcase_27 | AC | 1,093 ms
58,608 KB |
| testcase_28 | AC | 1,351 ms
58,608 KB |
| testcase_29 | AC | 1,093 ms
58,608 KB |
| testcase_30 | AC | 1,690 ms
58,604 KB |
| testcase_31 | AC | 1,691 ms
58,608 KB |
| testcase_32 | AC | 1,691 ms
58,608 KB |
| testcase_33 | AC | 1,687 ms
58,480 KB |
| testcase_34 | AC | 1,689 ms
58,480 KB |
| testcase_35 | AC | 1,690 ms
58,612 KB |
| testcase_36 | AC | 1,690 ms
58,656 KB |
| testcase_37 | AC | 1,690 ms
58,608 KB |
| testcase_38 | AC | 1,693 ms
58,608 KB |
| testcase_39 | AC | 1,691 ms
58,604 KB |
ソースコード
#ifndef LOCAL
#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")
#endif
#include <bits/stdc++.h>
using namespace std;
using ll=long long;
//#define int ll
#define rng(i,a,b) for(int i=int(a);i<int(b);i++)
#define rep(i,b) rng(i,0,b)
#define gnr(i,a,b) for(int i=int(b)-1;i>=int(a);i--)
#define per(i,b) gnr(i,0,b)
#define pb push_back
#define eb emplace_back
#define a first
#define b second
#define bg begin()
#define ed end()
#define all(x) x.bg,x.ed
#define si(x) int(x.size())
#ifdef LOCAL
#define dmp(x) cerr<<__LINE__<<" "<<#x<<" "<<x<<endl
#else
#define dmp(x) void(0)
#endif
template<class t,class u> bool chmax(t&a,u b){if(a<b){a=b;return true;}else return false;}
template<class t,class u> bool chmin(t&a,u b){if(b<a){a=b;return true;}else return false;}
template<class t> using vc=vector<t>;
template<class t> using vvc=vc<vc<t>>;
using pi=pair<int,int>;
using vi=vc<int>;
template<class t,class u>
ostream& operator<<(ostream& os,const pair<t,u>& p){
return os<<"{"<<p.a<<","<<p.b<<"}";
}
template<class t> ostream& operator<<(ostream& os,const vc<t>& v){
os<<"{";
for(auto e:v)os<<e<<",";
return os<<"}";
}
#define mp make_pair
#define mt make_tuple
#define one(x) memset(x,-1,sizeof(x))
#define zero(x) memset(x,0,sizeof(x))
#ifdef LOCAL
void dmpr(ostream&os){os<<endl;}
template<class T,class... Args>
void dmpr(ostream&os,const T&t,const Args&... args){
os<<t<<" ";
dmpr(os,args...);
}
#define dmp2(...) dmpr(cerr,__LINE__,##__VA_ARGS__)
#else
#define dmp2(...) void(0)
#endif
using uint=unsigned;
using ull=unsigned long long;
template<class t,size_t n>
ostream& operator<<(ostream&os,const array<t,n>&a){
return os<<vc<t>(all(a));
}
template<int i,class T>
void print_tuple(ostream&,const T&){
}
template<int i,class T,class H,class ...Args>
void print_tuple(ostream&os,const T&t){
if(i)os<<",";
os<<get<i>(t);
print_tuple<i+1,T,Args...>(os,t);
}
template<class ...Args>
ostream& operator<<(ostream&os,const tuple<Args...>&t){
os<<"{";
print_tuple<0,tuple<Args...>,Args...>(os,t);
return os<<"}";
}
template<class t>
void print(t x,int suc=1){
cout<<x;
if(suc==1)
cout<<"\n";
if(suc==2)
cout<<" ";
}
ll read(){
ll i;
cin>>i;
return i;
}
vi readvi(int n,int off=0){
vi v(n);
rep(i,n)v[i]=read()+off;
return v;
}
pi readpi(int off=0){
int a,b;cin>>a>>b;
return pi(a+off,b+off);
}
template<class t,class u>
void print(const pair<t,u>&p,int suc=1){
print(p.a,2);
print(p.b,suc);
}
template<class t,class u>
void print_offset(const pair<t,u>&p,ll off,int suc=1){
print(p.a+off,2);
print(p.b+off,suc);
}
template<class T>
void print(const vector<T>&v,int suc=1){
rep(i,v.size())
print(v[i],i==int(v.size())-1?suc:2);
}
template<class T>
void print_offset(const vector<T>&v,ll off,int suc=1){
rep(i,v.size())
print(v[i]+off,i==int(v.size())-1?suc:2);
}
template<class T,size_t N>
void print(const array<T,N>&v,int suc=1){
rep(i,N)
print(v[i],i==int(N)-1?suc:2);
}
string readString(){
string s;
cin>>s;
return s;
}
template<class T>
T sq(const T& t){
return t*t;
}
void YES(bool ex=true){
cout<<"YES\n";
if(ex)exit(0);
#ifdef LOCAL
cout.flush();
#endif
}
void NO(bool ex=true){
cout<<"NO\n";
if(ex)exit(0);
#ifdef LOCAL
cout.flush();
#endif
}
void Yes(bool ex=true){
cout<<"Yes\n";
if(ex)exit(0);
#ifdef LOCAL
cout.flush();
#endif
}
void No(bool ex=true){
cout<<"No\n";
if(ex)exit(0);
#ifdef LOCAL
cout.flush();
#endif
}
//#define CAPITAL
/*
void yes(bool ex=true){
#ifdef CAPITAL
cout<<"YES"<<"\n";
#else
cout<<"Yes"<<"\n";
#endif
if(ex)exit(0);
#ifdef LOCAL
cout.flush();
#endif
}
void no(bool ex=true){
#ifdef CAPITAL
cout<<"NO"<<"\n";
#else
cout<<"No"<<"\n";
#endif
if(ex)exit(0);
#ifdef LOCAL
cout.flush();
#endif
}*/
void possible(bool ex=true){
#ifdef CAPITAL
cout<<"POSSIBLE"<<"\n";
#else
cout<<"Possible"<<"\n";
#endif
if(ex)exit(0);
#ifdef LOCAL
cout.flush();
#endif
}
void impossible(bool ex=true){
#ifdef CAPITAL
cout<<"IMPOSSIBLE"<<"\n";
#else
cout<<"Impossible"<<"\n";
#endif
if(ex)exit(0);
#ifdef LOCAL
cout.flush();
#endif
}
constexpr ll ten(int n){
return n==0?1:ten(n-1)*10;
}
const ll infLL=LLONG_MAX/3;
#ifdef int
const int inf=infLL;
#else
const int inf=INT_MAX/2-100;
#endif
int topbit(signed t){
return t==0?-1:31-__builtin_clz(t);
}
int topbit(ll t){
return t==0?-1:63-__builtin_clzll(t);
}
int botbit(signed a){
return a==0?32:__builtin_ctz(a);
}
int botbit(ll a){
return a==0?64:__builtin_ctzll(a);
}
int botbit(ull a){
return a==0?64:__builtin_ctzll(a);
}
int popcount(signed t){
return __builtin_popcount(t);
}
int popcount(ll t){
return __builtin_popcountll(t);
}
int popcount(ull t){
return __builtin_popcountll(t);
}
bool ispow2(int i){
return i&&(i&-i)==i;
}
ll mask(int i){
return (ll(1)<<i)-1;
}
bool inc(int a,int b,int c){
return a<=b&&b<=c;
}
template<class t> void mkuni(vc<t>&v){
sort(all(v));
v.erase(unique(all(v)),v.ed);
}
ll rand_int(ll l, ll r) { //[l, r]
#ifdef LOCAL
static mt19937_64 gen;
#else
static mt19937_64 gen(chrono::steady_clock::now().time_since_epoch().count());
#endif
return uniform_int_distribution<ll>(l, r)(gen);
}
template<class t>
void myshuffle(vc<t>&a){
rep(i,si(a))swap(a[i],a[rand_int(0,i)]);
}
template<class t>
int lwb(const vc<t>&v,const t&a){
return lower_bound(all(v),a)-v.bg;
}
vvc<int> readGraph(int n,int m){
vvc<int> g(n);
rep(i,m){
int a,b;
cin>>a>>b;
//sc.read(a,b);
a--;b--;
g[a].pb(b);
g[b].pb(a);
}
return g;
}
vvc<int> readTree(int n){
return readGraph(n,n-1);
}
vc<ll> presum(const vi&a){
vc<ll> s(si(a)+1);
rep(i,si(a))s[i+1]=s[i]+a[i];
return s;
}
//mint107 は verify してねえ
//#define DYNAMIC_MOD
struct modinfo{uint mod,root;
#ifdef DYNAMIC_MOD
constexpr modinfo(uint m,uint r):mod(m),root(r),im(0){set_mod(m);}
ull im;
constexpr void set_mod(uint m){
mod=m;
im=ull(-1)/m+1;
}
uint product(uint a,uint b)const{
ull z=ull(a)*b;
uint x=((unsigned __int128)z*im)>>64;
uint v=uint(z)-x*mod;
return v<mod?v:v+mod;
}
#endif
};
template<modinfo const&ref>
struct modular{
static constexpr uint const &mod=ref.mod;
static modular root(){return modular(ref.root);}
uint v;
//modular(initializer_list<uint>ls):v(*ls.bg){}
modular(ll vv=0){s(vv%mod+mod);}
modular& s(uint vv){
v=vv<mod?vv:vv-mod;
return *this;
}
modular operator-()const{return modular()-*this;}
modular& operator+=(const modular&rhs){return s(v+rhs.v);}
modular&operator-=(const modular&rhs){return s(v+mod-rhs.v);}
modular&operator*=(const modular&rhs){
#ifndef DYNAMIC_MOD
v=ull(v)*rhs.v%mod;
#else
v=ref.product(v,rhs.v);
#endif
return *this;
}
modular&operator/=(const modular&rhs){return *this*=rhs.inv();}
modular operator+(const modular&rhs)const{return modular(*this)+=rhs;}
modular operator-(const modular&rhs)const{return modular(*this)-=rhs;}
modular operator*(const modular&rhs)const{return modular(*this)*=rhs;}
modular operator/(const modular&rhs)const{return modular(*this)/=rhs;}
modular pow(ll n)const{
if(n<0)return inv().pow(-n);
modular res(1),x(*this);
while(n){
if(n&1)res*=x;
x*=x;
n>>=1;
}
return res;
}
modular inv()const{return pow(mod-2);}
/*modular inv()const{
int x,y;
int g=extgcd<ll>(v,mod,x,y);
assert(g==1);
if(x<0)x+=mod;
return modular(x);
}*/
friend modular operator+(ll x,const modular&y){
return modular(x)+y;
}
friend modular operator-(ll x,const modular&y){
return modular(x)-y;
}
friend modular operator*(ll x,const modular&y){
return modular(x)*y;
}
friend modular operator/(ll x,const modular&y){
return modular(x)/y;
}
friend ostream& operator<<(ostream&os,const modular&m){
return os<<m.v;
}
friend istream& operator>>(istream&is,modular&m){
ll x;is>>x;
m=modular(x);
return is;
}
bool operator<(const modular&r)const{return v<r.v;}
bool operator==(const modular&r)const{return v==r.v;}
bool operator!=(const modular&r)const{return v!=r.v;}
explicit operator bool()const{
return v;
}
};
#define USE_GOOD_MOD
//size of input must be a power of 2
//output of forward fmt is bit-reversed
//output elements are in the range [0,mod*4)
//input of inverse fmt should be bit-reversed
template<class mint>
void inplace_fmt(const int n,mint*const f,bool inv){
static constexpr uint mod=mint::mod;
static constexpr uint mod2=mod*2;
static constexpr int L=30;
static mint g[L],ig[L],p2[L];
if(g[0].v==0){
rep(i,L){
mint w=-mint::root().pow(((mod-1)>>(i+2))*3);
g[i]=w;
ig[i]=w.inv();
p2[i]=mint(1<<i).inv();
}
}
if(!inv){
int b=n;
if(b>>=1){//input:[0,mod)
rep(i,b){
uint x=f[i+b].v;
f[i+b].v=f[i].v+mod-x;
f[i].v+=x;
}
}
if(b>>=1){//input:[0,mod*2)
mint p=1;
for(int i=0,k=0;i<n;i+=b*2){
rng(j,i,i+b){
uint x=(f[j+b]*p).v;
f[j+b].v=f[j].v+mod-x;
f[j].v+=x;
}
p*=g[__builtin_ctz(++k)];
}
}
while(b){
if(b>>=1){//input:[0,mod*3)
mint p=1;
for(int i=0,k=0;i<n;i+=b*2){
rng(j,i,i+b){
uint x=(f[j+b]*p).v;
f[j+b].v=f[j].v+mod-x;
f[j].v+=x;
}
p*=g[__builtin_ctz(++k)];
}
}
if(b>>=1){//input:[0,mod*4)
mint p=1;
for(int i=0,k=0;i<n;i+=b*2){
rng(j,i,i+b){
uint x=(f[j+b]*p).v;
f[j].v=(f[j].v<mod2?f[j].v:f[j].v-mod2);
f[j+b].v=f[j].v+mod-x;
f[j].v+=x;
}
p*=g[__builtin_ctz(++k)];
}
}
}
}else{
int b=1;
if(b<n/2){//input:[0,mod)
mint p=1;
for(int i=0,k=0;i<n;i+=b*2){
rng(j,i,i+b){
ull x=f[j].v+mod-f[j+b].v;
f[j].v+=f[j+b].v;
f[j+b].v=x*p.v%mod;
}
p*=ig[__builtin_ctz(++k)];
}
b<<=1;
}
for(;b<n/2;b<<=1){
mint p=1;
for(int i=0,k=0;i<n;i+=b*2){
rng(j,i,i+b/2){//input:[0,mod*2)
ull x=f[j].v+mod2-f[j+b].v;
f[j].v+=f[j+b].v;
f[j].v=(f[j].v)<mod2?f[j].v:f[j].v-mod2;
f[j+b].v=x*p.v%mod;
}
rng(j,i+b/2,i+b){//input:[0,mod)
ull x=f[j].v+mod-f[j+b].v;
f[j].v+=f[j+b].v;
f[j+b].v=x*p.v%mod;
}
p*=ig[__builtin_ctz(++k)];
}
}
if(b<n){//input:[0,mod*2)
rep(i,b){
uint x=f[i+b].v;
f[i+b].v=f[i].v+mod2-x;
f[i].v+=x;
}
}
mint z=p2[__lg(n)];
rep(i,n)f[i]*=z;
}
}
template<class mint>
void inplace_fmt(vector<mint>&f,bool inv){
inplace_fmt(si(f),f.data(),inv);
}
//size of input must be a power of 2
//output elements are in the range [0,mod*4)
template<class mint>
void half_fmt(const int n,mint*const f){
static constexpr uint mod=mint::mod;
static constexpr uint mod2=mod*2;
static const int L=30;
static mint g[L],h[L];
if(g[0].v==0){
rep(i,L){
g[i]=-mint::root().pow(((mod-1)>>(i+2))*3);
h[i]=mint::root().pow((mod-1)>>(i+2));
}
}
int b=n;
int lv=0;
if(b>>=1){//input:[0,mod)
mint p=h[lv++];
for(int i=0,k=0;i<n;i+=b*2){
rng(j,i,i+b){
uint x=(f[j+b]*p).v;
f[j+b].v=f[j].v+mod-x;
f[j].v+=x;
}
p*=g[__builtin_ctz(++k)];
}
}
if(b>>=1){//input:[0,mod*2)
mint p=h[lv++];
for(int i=0,k=0;i<n;i+=b*2){
rng(j,i,i+b){
uint x=(f[j+b]*p).v;
f[j+b].v=f[j].v+mod-x;
f[j].v+=x;
}
p*=g[__builtin_ctz(++k)];
}
}
while(b){
if(b>>=1){//input:[0,mod*3)
mint p=h[lv++];
for(int i=0,k=0;i<n;i+=b*2){
rng(j,i,i+b){
uint x=(f[j+b]*p).v;
f[j+b].v=f[j].v+mod-x;
f[j].v+=x;
}
p*=g[__builtin_ctz(++k)];
}
}
if(b>>=1){//input:[0,mod*4)
mint p=h[lv++];
for(int i=0,k=0;i<n;i+=b*2){
rng(j,i,i+b){
uint x=(f[j+b]*p).v;
f[j].v=(f[j].v<mod2?f[j].v:f[j].v-mod2);
f[j+b].v=f[j].v+mod-x;
f[j].v+=x;
}
p*=g[__builtin_ctz(++k)];
}
}
}
}
template<class mint>
void half_fmt(vector<mint>&f){
half_fmt(si(f),f.data());
}
#ifdef USE_GOOD_MOD
template<class mint>
vc<mint> multiply(vc<mint> x,const vc<mint>&y,bool same=false){
int n=si(x)+si(y)-1;
int s=1;
while(s<n)s*=2;
x.resize(s);inplace_fmt(x,false);
if(!same){
static vc<mint> z;
z.clear();z.resize(s);
rep(i,si(y))z[i]=y[i];
inplace_fmt(z,false);
rep(i,s)x[i]*=z[i];
}else{
rep(i,s)x[i]*=x[i];
}
inplace_fmt(x,true);x.resize(n);
return x;
}
template<class mint>
vc<mint> multiply_givenlength(vc<mint> x,const vc<mint>&y,bool same=false){
int s=si(x);
assert(ispow2(s));
assert(si(y));
x.resize(s);inplace_fmt(x,false);
if(!same){
vc<mint> z(s);
rep(i,si(y))z[i]=y[i];
inplace_fmt(z,false);
rep(i,s)x[i]*=z[i];
}else{
rep(i,s)x[i]*=x[i];
}
inplace_fmt(x,true);
return x;
}
#else
//59501818244292734739283969-1=5.95*10^25 までの値を正しく計算
//最終的な列の大きさが 2^24 までなら動く
//最終的な列の大きさが 2^20 以下のときは，下の 3 つの素数を使ったほうが速い（は？）
//VERIFY: yosupo
//Yukicoder No980 (same=true)
namespace arbitrary_convolution{
constexpr modinfo base0{167772161,3};//2^25 * 5 + 1
constexpr modinfo base1{469762049,3};//2^26 * 7 + 1
constexpr modinfo base2{754974721,11};//2^24 * 45 + 1
//extern constexpr modinfo base0{1045430273,3};//2^20 * 997 + 1
//extern constexpr modinfo base1{1051721729,6};//2^20 * 1003 + 1
//extern constexpr modinfo base2{1053818881,7};//2^20 * 1005 + 1
using mint0=modular<base0>;
using mint1=modular<base1>;
using mint2=modular<base2>;
template<class t,class mint>
vc<t> sub(const vc<mint>&x,const vc<mint>&y,bool same=false){
int n=si(x)+si(y)-1;
int s=1;
while(s<n)s*=2;
vc<t> z(s);rep(i,si(x))z[i]=x[i].v;
inplace_fmt(z,false);
if(!same){
vc<t> w(s);rep(i,si(y))w[i]=y[i].v;
inplace_fmt(w,false);
rep(i,s)z[i]*=w[i];
}else{
rep(i,s)z[i]*=z[i];
}
inplace_fmt(z,true);z.resize(n);
return z;
}
template<class mint>
vc<mint> multiply(const vc<mint>&x,const vc<mint>&y,bool same=false){
auto d0=sub<mint0>(x,y,same);
auto d1=sub<mint1>(x,y,same);
auto d2=sub<mint2>(x,y,same);
int n=si(d0);
vc<mint> res(n);
static const mint1 r01=mint1(mint0::mod).inv();
static const mint2 r02=mint2(mint0::mod).inv();
static const mint2 r12=mint2(mint1::mod).inv();
static const mint2 r02r12=r02*r12;
static const mint w1=mint(mint0::mod);
static const mint w2=w1*mint(mint1::mod);
rep(i,n){
ull a=d0[i].v;
ull b=(d1[i].v+mint1::mod-a)*r01.v%mint1::mod;
ull c=((d2[i].v+mint2::mod-a)*r02r12.v+(mint2::mod-b)*r12.v)%mint2::mod;
res[i].v=(a+b*w1.v+c*w2.v)%mint::mod;
}
return res;
}
template<class t,class mint>
vc<t> sub_givenlength(const vc<mint>&x,const vc<mint>&y,bool same=false){
int s=si(x);
assert(ispow2(s));
assert(si(y)==s);
vc<t> z(s);rep(i,si(x))z[i]=x[i].v;
inplace_fmt(z,false);
if(!same){
vc<t> w(s);rep(i,si(y))w[i]=y[i].v;
inplace_fmt(w,false);
rep(i,s)z[i]*=w[i];
}else{
rep(i,s)z[i]*=z[i];
}
inplace_fmt(z,true);
return z;
}
template<class mint>
vc<mint> multiply_givenlength(const vc<mint>&x,const vc<mint>&y,bool same=false){
auto d0=sub_givenlength<mint0>(x,y,same);
auto d1=sub_givenlength<mint1>(x,y,same);
auto d2=sub_givenlength<mint2>(x,y,same);
int n=si(d0);
vc<mint> res(n);
static const mint1 r01=mint1(mint0::mod).inv();
static const mint2 r02=mint2(mint0::mod).inv();
static const mint2 r12=mint2(mint1::mod).inv();
static const mint2 r02r12=r02*r12;
static const mint w1=mint(mint0::mod);
static const mint w2=w1*mint(mint1::mod);
rep(i,n){
ull a=d0[i].v;
ull b=(d1[i].v+mint1::mod-a)*r01.v%mint1::mod;
ull c=((d2[i].v+mint2::mod-a)*r02r12.v+(mint2::mod-b)*r12.v)%mint2::mod;
res[i].v=(a+b*w1.v+c*w2.v)%mint::mod;
}
return res;
}
}
using arbitrary_convolution::multiply;
using arbitrary_convolution::multiply_givenlength;
#endif
//UTPC2021 C
namespace integer_convolution{
extern constexpr modinfo base0{1045430273,3};//2^20 * 997 + 1
extern constexpr modinfo base1{1051721729,6};//2^20 * 1003 + 1
//extern constexpr modinfo base0{469762049,3};//2^26 * 7 + 1
//extern constexpr modinfo base1{754974721,11};//2^24 * 45 + 1
using mint0=modular<base0>;
using mint1=modular<base1>;
template<class t>
vc<t> sub(const vi&x,const vi&y,bool same=false){
int n=si(x)+si(y)-1;
int s=1;
while(s<n)s*=2;
vc<t> z(s);rep(i,si(x))z[i]=x[i];
inplace_fmt(z,false);
if(!same){
vc<t> w(s);rep(i,si(y))w[i]=y[i];
inplace_fmt(w,false);
rep(i,s)z[i]*=w[i];
}else{
rep(i,s)z[i]*=z[i];
}
inplace_fmt(z,true);z.resize(n);
return z;
}
vi multiply(const vi&x,const vi&y,bool same=false){
auto d0=sub<mint0>(x,y,same);
auto d1=sub<mint1>(x,y,same);
const mint1 r=mint1(mint0::mod).inv();
const ll v=ll(mint0::mod)*mint1::mod;
int n=si(d0);
vi res(n);
rep(i,n){
res[i]=d0[i].v+(r*(d1[i]-d0[i].v)).v*(ull)mint0::mod;
if(res[i]>v/2)res[i]-=v;
}
return res;
}
}
//最大で 1<<mx のサイズの fft が登場！
template<class mint>
vc<mint> large_convolution(const vc<mint>&a,const vc<mint>&b,int mx){
int n=si(a),m=si(b);
vc<mint> c(n+m-1);
int len=1<<(mx-1);
for(int i=0;i<n;i+=len){
for(int j=0;j<n;j+=len){
int x=min(len,n-i),y=min(len,m-j);
auto d=multiply(vc<mint>(a.bg+i,a.bg+i+x),vc<mint>(b.bg+j,b.bg+j+y));
rep(k,si(d))
c[i+j+k]+=d[k];
}
}
return c;
}
//input A: N 次,B ?,M
//output D: M 次多項式
//C を M 次多項式として
//[x^N] A*B*C = [x^M] D*C
//となるような D を返す
//CF796F
template<class mint>
vc<mint> transpose_advance(const vc<mint>&a,const vc<mint>&b,int m){
int n=si(a)-1;
auto d=multiply(a,b);
vc<mint> res(m+1);
if(n>=m){
rep(i,m+1)res[i]=d[i+n-m];
}else{
rng(i,m-n,m+1)res[i]=d[i+n-m];
}
return res;
}
template<class mint>
void chmult(vc<mint>&x,const vc<mint>&y,int s){
x=multiply(move(x),y);
x.resize(s);
}
//Poly というのは常にサイズ 1 以上であることにしよう
//low のあたりをかならずサイズ s のものを返すようにいじった
//その影響で何かが起きているかも知れないし，起きていないかも知れない
template<class mint>
struct Poly:public vc<mint>{
template<class...Args>
Poly(Args...args):vc<mint>(args...){}
Poly(initializer_list<mint>init):vc<mint>(all(init)){}
int size()const{
return vc<mint>::size();
}
void ups(int s){
if(size()<s)this->resize(s,0);
}
Poly low(int s)const{
assert(s);
Poly res(s);
rep(i,min(s,size()))res[i]=(*this)[i];
return res;
}
Poly rev()const{
auto r=*this;
reverse(all(r));
return r;
}
Poly operator>>(int x)const{
assert(x<size());
Poly res(size()-x);
rep(i,size()-x)res[i]=(*this)[i+x];
return res;
}
Poly operator<<(int x)const{
Poly res(size()+x);
rep(i,size())res[i+x]=(*this)[i];
return res;
}
mint freq(int i)const{
return i<size()?(*this)[i]:0;
}
Poly operator-()const{
Poly res=*this;
for(auto&v:res)v=-v;
return res;
}
Poly& operator+=(const Poly&r){
ups(r.size());
rep(i,r.size())
(*this)[i]+=r[i];
return *this;
}
template<class T>
Poly& operator+=(T t){
(*this)[0]+=t;
return *this;
}
Poly& operator-=(const Poly&r){
ups(r.size());
rep(i,r.size())
(*this)[i]-=r[i];
return *this;
}
template<class T>
Poly& operator-=(T t){
(*this)[0]-=t;
return *this;
}
template<class T>
Poly& operator*=(T t){
for(auto&v:*this)
v*=t;
return *this;
}
Poly& operator*=(const Poly&r){
return *this=multiply(*this,r);
}
Poly square()const{
return multiply(*this,*this,true);
}
#ifndef USE_GOOD_MOD
Poly inv(int s)const{
Poly r{mint(1)/(*this)[0]};
for(int n=1;n<s;n*=2)
r=r*2-(r.square()*low(2*n)).low(2*n);
r.resize(s);
return r;
}
#else
//source: Section 4 of "Removing redundancy from high-precision Newton iteration"
// 5/3
Poly inv(int s)const{
Poly r(s);
r[0]=mint(1)/(*this)[0];
for(int n=1;n<s;n*=2){
vc<mint> f=low(2*n);
f.resize(2*n);
inplace_fmt(f,false);
vc<mint> g=r.low(2*n);
g.resize(2*n);
inplace_fmt(g,false);
rep(i,2*n)f[i]*=g[i];
inplace_fmt(f,true);
rep(i,n)f[i]=0;
inplace_fmt(f,false);
rep(i,2*n)f[i]*=g[i];
inplace_fmt(f,true);
rng(i,n,min(2*n,s))r[i]=-f[i];
}
return r;
}
#endif
template<class T>
Poly& operator/=(T t){
return *this*=mint(1)/mint(t);
}
Poly quotient(const Poly&r,const Poly&rri)const{
int m=r.size();
assert(r[m-1].v);
int n=size();
int s=n-m+1;
if(s<=0) return {0};
return (rev().low(s)*rri.low(s)).low(s).rev();
}
Poly& operator/=(const Poly&r){
return *this=quotient(r,r.rev().inv(max(size()-r.size(),int(0))+1));
}
Poly& operator%=(const Poly&r){
*this-=*this/r*r;
return *this=low(r.size()-1);
}
Poly operator+(const Poly&r)const{return Poly(*this)+=r;}
template<class T>
Poly operator+(T t)const{return Poly(*this)+=t;}
Poly operator-(const Poly&r)const{return Poly(*this)-=r;}
template<class T>
Poly operator-(T t)const{return Poly(*this)-=t;}
template<class T>
Poly operator*(T t)const{return Poly(*this)*=t;}
Poly operator*(const Poly&r)const{return Poly(*this)*=r;}
template<class T>
Poly operator/(T t)const{return Poly(*this)/=t;}
Poly operator/(const Poly&r)const{return Poly(*this)/=r;}
Poly operator%(const Poly&r)const{return Poly(*this)%=r;}
Poly dif()const{
assert(size());
if(size()==1){
return {0};
}else{
Poly r(size()-1);
rep(i,r.size())
r[i]=(*this)[i+1]*(i+1);
return r;
}
}
Poly inte(const mint invs[])const{
Poly r(size()+1,0);
rep(i,size())
r[i+1]=(*this)[i]*invs[i+1];
return r;
}
//VERIFY: yosupo
//opencupXIII GP of Peterhof H
Poly log(int s,const mint invs[])const{
assert((*this)[0]==1);
if(s==1)return {0};
return (low(s).dif()*inv(s-1)).low(s-1).inte(invs);
}
//Petrozavodsk 2019w mintay1 G
//yosupo judge
//UOJ Round23 C
Poly exp(int s,const mint invs[])const{
assert((*this)[0]==mint(0));
Poly f{1},g{1};
for(int n=1;;n*=2){
if(n>=s)break;
g=g*2-(g.square()*f).low(n);
//if(n>=s)break;
Poly q=low(n).dif();
q=q+g*(f.dif()-f*q).low(2*n-1);
f=f+(f*(low(2*n)-q.inte(invs))).low(2*n);
}
return f.low(s);
}
//exp(x),exp(-x) のペアを返す
//UOJ Round23 C
pair<Poly,Poly> exp2(int s,const mint invs[])const{
assert((*this)[0]==mint(0));
Poly f{1},g{1};
for(int n=1;;n*=2){
//if(n>=s)break;
g=g*2-(g.square()*f).low(n);
if(n>=s)break;
Poly q=low(n).dif();
q=q+g*(f.dif()-f*q).low(2*n-1);
f=f+(f*(low(2*n)-q.inte(invs))).low(2*n);
}
return make_pair(f.low(s),g.low(s));
}
#ifndef USE_GOOD_MOD
//CF250 E
Poly sqrt(int s)const{
assert((*this)[0]==1);
static const mint half=mint(1)/mint(2);
Poly r{1};
for(int n=1;n<s;n*=2)
r=(r+(r.inv(n*2)*low(n*2)).low(n*2))*half;
return r.low(s);
}
#else
//11/6
//VERIFY: yosupo
Poly sqrt(int s)const{
assert((*this)[0]==1);
static const mint half=mint(1)/mint(2);
vc<mint> f{1},g{1},z{1};
for(int n=1;n<s;n*=2){
rep(i,n)z[i]*=z[i];
inplace_fmt(z,true);
vc<mint> delta(2*n);
rep(i,n)delta[n+i]=z[i]-freq(i)-freq(n+i);
inplace_fmt(delta,false);
vc<mint> gbuf(2*n);
rep(i,n)gbuf[i]=g[i];
inplace_fmt(gbuf,false);
rep(i,2*n)delta[i]*=gbuf[i];
inplace_fmt(delta,true);
f.resize(2*n);
rng(i,n,2*n)f[i]=-half*delta[i];
if(2*n>=s)break;
z=f;
inplace_fmt(z,false);
vc<mint> eps=gbuf;
rep(i,2*n)eps[i]*=z[i];
inplace_fmt(eps,true);
rep(i,n)eps[i]=0;
inplace_fmt(eps,false);
rep(i,2*n)eps[i]*=gbuf[i];
inplace_fmt(eps,true);
g.resize(2*n);
rng(i,n,2*n)g[i]=-eps[i];
}
f.resize(s);
return f;
}
#endif
pair<Poly,Poly> divide(const Poly&r,const Poly&rri)const{
Poly a=quotient(r,rri);
Poly b=*this-a*r;
return make_pair(a,b.low(r.size()-1));
}
//Yukicoder No.215
Poly pow_mod(int n,const Poly&r)const{
Poly rri=r.rev().inv(r.size());
Poly cur{1},x=*this%r;
while(n){
if(n%2)
cur=(cur*x).divide(r,rri).b;
x=(x*x).divide(r,rri).b;
n/=2;
}
return cur;
}
int lowzero()const{
rep(i,size())if((*this)[i]!=0)return i;
return size();
}
//VERIFY: yosupo
//UOJ Round23 C (z=0,p<0)
Poly pow(int s,int p,const mint invs[])const{
assert(s>0);
int n=size(),z=0;
for(;z<n&&(*this)[z]==0;z++);
assert(z==0||p>=0);
if(z*p>=s)return Poly(s,0);
mint c=(*this)[z],cinv=c.inv();
mint d=c.pow(p);
int t=s-z*p;
Poly x(t);
rng(i,z,min(z+t,n))x[i-z]=(*this)[i]*cinv;
x=x.log(t,invs);
rep(i,t)x[i]*=p;
x=x.exp(t,invs);
rep(i,t)x[i]*=d;
Poly y(s);
rep(i,t)y[z*p+i]=x[i];
return y;
}
mint eval(mint x)const{
mint r=0,w=1;
for(auto v:*this){
r+=w*v;
w*=x;
}
return r;
}
};
//CF641 F2
//f*x^(-a)
template<class mint>
struct Laurent{
Poly<mint> f;
int a;
Laurent(const Poly<mint>&num,const Poly<mint>&den,int s){
a=den.lowzero();
assert(a<si(den));
f=(num*(den>>a).inv(s)).low(s);
}
Laurent(const Poly<mint>&ff,int aa):f(ff),a(aa){}
Laurent dif()const{
return Laurent(f*(-a)+(f.dif()<<1),a+1);
}
mint&operator[](int i){
assert(inc(0,i+a,si(f)-1));
return f[i+a];
}
};
template<class mint>
ll m2l(mint a){
return a.v<mint::mod/2?a.v:ll(a.v)-ll(mint::mod);
}
template<class mint>
void showpoly(const Poly<mint>&a){
vi tmp(si(a));
rep(i,si(a)){
tmp[i]=m2l(a[i]);
}
cerr<<tmp<<endl;
}
#ifndef DYNAMIC_MOD
extern constexpr modinfo base{998244353,3};
//extern constexpr modinfo base{1000000007,0};
//modinfo base{1,0};
#ifdef USE_GOOD_MOD
static_assert(base.mod==998244353);
#endif
#else
modinfo base(1,0);
extern constexpr modinfo base107(1000000007,0);
using mint107=modular<base107>;
#endif
using mint=modular<base>;
mint parity(int i){
return i%2==0?1:-1;
}
#ifdef LOCAL
const int vmax=1010;
#else
const int vmax=(1<<21)+10;
#endif
mint fact[vmax],finv[vmax],invs[vmax];
void initfact(){
fact[0]=1;
rng(i,1,vmax){
fact[i]=fact[i-1]*i;
}
finv[vmax-1]=fact[vmax-1].inv();
for(int i=vmax-2;i>=0;i--){
finv[i]=finv[i+1]*(i+1);
}
for(int i=vmax-1;i>=1;i--){
invs[i]=finv[i]*fact[i-1];
}
}
mint choose(int n,int k){
return fact[n]*finv[n-k]*finv[k];
}
mint binom(int a,int b){
return fact[a+b]*finv[a]*finv[b];
}
mint catalan(int n){
return binom(n,n)-(n-1>=0?binom(n-1,n+1):0);
}
/*
const int vmax=110;
mint binbuf[vmax][vmax];
mint choose(int n,int k){
return binbuf[n-k][k];
}
mint binom(int a,int b){
return binbuf[a][b];
}
void initfact(){
binbuf[0][0]=1;
rep(i,vmax)rep(j,vmax){
if(i)binbuf[i][j]+=binbuf[i-1][j];
if(j)binbuf[i][j]+=binbuf[i][j-1];
}
}
*/
mint p2[vmax],p2inv[vmax];
void initp2(){
p2[0]=1;
rep(i,vmax-1)p2[i+1]=p2[i]*2;
p2inv[vmax-1]=p2[vmax-1].inv();
per(i,vmax-1)p2inv[i]=p2inv[i+1]*2;
}
//verify yosupo
vc<mint> sampling_shift(vc<mint> a,mint c,int m){
int n=si(a);
rep(i,n)a[i]*=finv[i];
vc<mint> b(finv,finv+n);
rep(i,n)b[i]*=parity(i);
chmult(a,b,n);
rep(i,n)a[i]*=fact[i];
reverse(all(a));
mint w=1;
rep(i,n){
b[i]=finv[i]*w;
w*=(c-i);
}
chmult(a,b,n);
reverse(all(a));
rep(i,n)a[i]*=finv[i];
a.resize(m);
b.resize(m);
rep(i,m)b[i]=finv[i];
chmult(a,b,m);
rep(i,m)a[i]*=fact[i];
return a;
}
void extend_poly(vc<mint>&a,int m){
int n=si(a);
rep(i,n)a[i]*=finv[i];
vc<mint> b(finv,finv+n);
rep(i,n)b[i]*=parity(i);
chmult(a,b,n);
a.resize(m);
b.resize(m);
rep(i,m)b[i]=finv[i];
chmult(a,b,m);
rep(i,m)a[i]*=fact[i];
}
void extend_polys(vvc<mint>&as,int m){
int n=si(as[0]);
for(auto&a:as)assert(si(a)==n);
for(auto&a:as)rep(i,n)a[i]*=finv[i];
vc<mint> b(finv,finv+n);
rep(i,n)b[i]*=parity(i);
for(auto&a:as)chmult(a,b,n);
for(auto&a:as)a.resize(m);
b.resize(m);
rep(i,m)b[i]=finv[i];
for(auto&a:as)chmult(a,b,m);
for(auto&a:as)rep(i,m)a[i]*=fact[i];
}
struct large_factorial{
int s;
vc<mint> x;
large_factorial():s(1),x(1,1){
while(sq<ll>(s)<mint::mod-1){
extend_poly(x,4*s);
rep(i,2*s)x[i]=x[i*2]*(s*(2*i+1)+1)*x[i*2+1];
x.resize(s*=2);
}
rep(i,s)x[i]*=i*s+1;
}
mint getfact(int i){
int p=i/s;
mint res=1;
rep(j,p)res*=x[j];
rng(j,p*s,i)res*=j+1;
return res;
}
};
ll minp2(ll n){
if(n<=1)return 1;
else return ll(1)<<(topbit(n-1)+1);
}
//FFT の結果をキャッシュして持っておく
//rw に生データ，buf に fft 後のデータ
//どちらかが空でもよい
//si(buf) は 0 or si(rw) 以上の 2 冪
//Codechef 2021 January Lunchtime EXPGROUP
//yosupo product of polynomial sequence
//Yukicoder 2166
//メモリ食いまくり
//ABC278H
//Osijek Day6 A
struct F{
int n;
vc<mint> rw,buf;
F():n(0){}
F(const vc<mint>&given):rw(given){
n=si(rw);
assert(n>0);
}
F(initializer_list<mint> init):rw(all(init)){
n=si(rw);
assert(n>0);
}
int size()const{return n;}
bool empty()const{return n==0;}
void assume_have(){
if(rw.empty()){
int s=minp2(n);
assert(si(buf)>=s);
rw.resize(s);
rep(i,s)rw[i]=buf[i].v;
inplace_fmt(rw,true);
rw.resize(n);
}
assert(si(rw)==n);
}
vc<mint> getrw(){
assume_have();
return rw;
}
void prepare(int len){
if(si(buf)<len)assume_have();
if(buf.empty()){
int s=minp2(n);
buf.resize(s);
rep(i,n)buf[i]=rw[i];
inplace_fmt(buf,false);
}
while(si(buf)<len){
int s=si(buf);
buf.resize(s*2);
rep(i,n)buf[s+i]=rw[i];
half_fmt(s,buf.data()+s);
}
}
void copy_from(F&a){
n=a.n;
rw=a.rw;
if(si(a.buf)){
int s=minp2(n);
buf.resize(s);
rep(i,s)buf[i]=a.buf[i];
}else buf.clear();
}
void init_from_sum(F&a,F&b){
if(a.empty())return copy_from(b);
if(b.empty())return copy_from(a);
n=max(a.n,b.n);
if(si(a.rw)&&si(b.rw)){
rw.resize(n);
rep(i,n){
rw[i]=0;
if(i<a.n)rw[i]+=a.rw[i];
if(i<b.n)rw[i]+=b.rw[i];
}
}else rw.clear();
int s=minp2(n);
if(si(a.buf)>=s&&si(b.buf)>=s){
buf.resize(s);
rep(i,s)buf[i]=mint(a.buf[i].v)+mint(b.buf[i].v);
}else buf.clear();
if(rw.empty()&&buf.empty()){
a.prepare(n);
b.prepare(n);
buf.resize(s);
rep(i,s)buf[i]=mint(a.buf[i].v)+mint(b.buf[i].v);
}
}
//Osijek Day6 A (n=0,middle=true)
void init_from_product(F&a,F&b,bool middle=false){
if(a.n==0||b.n==0){
n=0;
rw.clear();
buf.clear();
return;
}
assert(a.n>0);
assert(b.n>0);
if(middle){
assert(a.n>=b.n);
n=a.n;
}else{
n=a.n+b.n-1;
}
rw.clear();
int s=minp2(n);
a.prepare(n);
b.prepare(n);
buf.resize(s);
rep(i,s)buf[i]=a.buf[i]*b.buf[i];
}
F operator*(F&b){
F res;
res.init_from_product(*this,b);
return res;
}
F operator*(F&&b){
F res;
res.init_from_product(*this,b);
return res;
}
F operator+(F&b){
F res;
res.init_from_sum(*this,b);
return res;
}
F operator+(F&&b){
F res;
res.init_from_sum(*this,b);
return res;
}
F& operator*=(F&b){
return *this=(*this)*b;
}
F& operator+=(F&b){
return *this=(*this)+b;
}
F& operator+=(F&&b){
return *this=(*this)+b;
}
void freememory(){
n=0;
vc<mint>().swap(rw);
vc<mint>().swap(buf);
}
//middle product の情報をつくる
//a,b,c が x の関数だとする
//ans+=[x^deg(a)] abc だとしよう
//ab の係数上位 deg(c)+1 項を d とおけば
//ans+=[x^deg(d)] dc とできるので，この d を求めよう
//単にサイズを広げない prod をするだけ
//deg(a)>=deg(b)+deg(c) でないと破綻する
F middle(F&b){
F res;
res.init_from_product(*this,b,true);
return res;
}
//middle product の情報が buf に入っているとする
//サイズ s に縮める
//[n-s,n) が重要で，それ以外のパートにはゴミが入っているかもしれない
void middle_shrink(int s){
assert(s<=n);
if(s<n){
assume_have();
rep(i,s)rw[i]=rw[n-s+i];
rw.resize(n=s);
buf.clear();
}
}
};
void slv1(int t){
using V=array<F,2>;
using M=array<V,2>;
int kmax=0;
vc<pi> nk(t);
for(auto&[n,k]:nk){
ll N;
cin>>N>>k;
n=N%mint::mod;
chmax(kmax,k);
}
vc<pi> qs;
rep(i,kmax)qs.eb(i,inf);
rep(i,t)qs.eb(nk[i].b,i);
sort(all(qs));
int s=si(qs);
using T=tuple<M,F>;
vc<T> buf(2*s);
auto getid=[&](int l,int r){
if(r-l==1)return l+r;
else return (l+r)/2*2;
};
{
auto dfs=[&](auto self,int l,int r)->void{
auto&[a,b]=buf[getid(l,r)];
if(r-l==1){
if(qs[l].b<inf){
mint x=nk[qs[l].b].a;
a[0][0]={1,-x};
a[1][1]={1,-x};
b={1,-x};
}else{
int i=qs[l].a;
a[0][0]={2,-2*i};
a[0][1]={i,-mint(i)*(i-1)*invs[2]};
a[1][0]={0,1};
b={0,1};
}
}else{
int m=(l+r)/2;
self(self,l,m);
self(self,m,r);
auto&[al,bl]=buf[getid(l,m)];
auto&[ar,br]=buf[getid(m,r)];
rep(i,2)rep(j,2)rep(k,2)
a[i][k]+=ar[i][j]*al[j][k];
b=br*bl;
rep(i,2)rep(j,2)ar[i][j].freememory();
bl.freememory();
}
};
dfs(dfs,0,s);
}
V ini;
{
auto&[a,b]=buf[getid(0,s)];
Poly<mint> rw=b.getrw();
rw.erase(rw.bg,rw.bg+kmax);
rw=rw.inv(kmax+1);
rw.resize(s);
rotate(rw.bg,rw.bg+kmax+1,rw.ed);
ini[0]=rw;
ini[1]=vc<mint>(s);
}
vc<mint> ans(t);
{
auto dfs=[&](auto self,int l,int r,V&z)->void{
rep(k,2)z[k].middle_shrink(r-l);
{
auto&[a,b]=buf[getid(l,r)];
rep(i,2)rep(j,2)a[i][j].freememory();
b.freememory();
}
if(r-l==1){
mint val=z[0].getrw()[0];
if(qs[l].b<inf)ans[qs[l].b]=val;
rep(k,2)z[k].freememory();
}else{
int m=(l+r)/2;
auto&[al,bl]=buf[getid(l,m)];
auto&[ar,br]=buf[getid(m,r)];
V zl,zr;
rep(i,2)zl[i]=z[i].middle(br);
rep(i,2)rep(j,2)zr[i]+=z[j].middle(al[i][j]);
rep(k,2)z[k].freememory();
self(self,l,m,zl);
self(self,m,r,zr);
}
};
dfs(dfs,0,s,ini);
}
rep(i,t)print(ans[i]);
}
void slv2(){
int n,k;
{
ll N,K;
cin>>N>>K;
if(K>=mint::mod)return print(0);
n=N%mint::mod;
k=K;
}
vvc<mint> a(4);
rep(i,3){
a[0].pb(2*n-2*i);
a[1].pb((n-(i-1)*invs[2])*i);
a[2].pb(1);
a[3].pb(0);
}
int s=1;
while((ll)s*(2*s+1)<k){
extend_polys(a,8*s+2);
rep(i,4*s+1){
mint v[2][2];
rep(x,2)rep(y,2)rep(z,2)
v[x][z]+=a[x*2+y][i*2+1]*a[y*2+z][i*2];
rep(x,2)rep(y,2)
a[x*2+y][i]=v[x][y];
}
rep(j,4)a[j].resize(4*s+1);
s*=2;
}
int p=k/s;
mint v[2]{1,0};
rep(i,p){
mint w[2];
rep(x,2)rep(y,2)
w[x]+=a[x*2+y][i]*v[y];
swap(v,w);
}
rng(i,p*s,k){
mint tmp=v[0];
v[0]=(2*n-2*i)*v[0]+(n-(i-1)*invs[2])*i*v[1];
v[1]=tmp;
}
print(v[0]);
}
signed main(){
cin.tie(0);
ios::sync_with_stdio(0);
cout<<fixed<<setprecision(20);
initfact();
int t;cin>>t;
if(t<=5){rep(_,t)slv2();}
else{slv1(t);}
}