結果
| 問題 |
No.1963 Subset Mex
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2025-04-11 23:43:14 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 108 ms / 4,000 ms |
| コード長 | 9,548 bytes |
| コンパイル時間 | 2,155 ms |
| コンパイル使用メモリ | 203,492 KB |
| 実行使用メモリ | 259,964 KB |
| 最終ジャッジ日時 | 2025-04-11 23:43:21 |
| 合計ジャッジ時間 | 6,244 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 26 |
ソースコード
#include<bits/stdc++.h>
using namespace std;
bool st;
namespace _wrk{;
ostream& operator<<(ostream &w,__int128 p){
static char buf[45];
auto *c=buf;
if(p<0){
w<<'-';
p=-p;
}
if(p==0){
w<<'0';
}else{
while(p){
(*c++)=(p%10+'0');
p/=10;
}
c--;
while(1){
w<<(*c);
if(c==buf)break;
c--;
}
}
return w;
}
istream& operator>>(istream &w,__int128 &p){
static bool mask;
mask=0;
while(isspace(w.peek())){
w.get();
}
if(w.peek()=='-'){
mask=1;
w.get();
if(!isdigit(w.peek())){
w.putback('-');
return w;
}
}
p=0;
while(isdigit(w.peek())){
char c=w.get();
p=p*10+(c-'0');
}
if(mask)p=-p;
return w;
}
template<int mod>
struct modint{
int num;
const static __uint128_t brt=((__uint128_t)(1)<<(64))/mod;
modint(){
num=0;
}
modint(int x){
num=x%mod;
}
modint(long long x){
num=x%mod;
}
modint<mod>operator=(int x){
num=x%mod;
return (*this);
}
modint<mod>operator=(long long x){
num=x%mod;
return (*this);
}
modint<mod>operator=(modint<mod>x){
num=x.num;
return (*this);
}
modint<mod> operator+(modint<mod> c)const{
long long x=num+c.num;
return x>=mod?x-mod:x;
}
modint<mod> operator-(modint<mod> c)const{
long long x=num-c.num;
return x<0?x+mod:x;
}
modint<mod>operator*(modint<mod>c)const{
long long x=(long long)num*c.num;
x=x-mod*(brt*x>>64);
while(x>=mod)x-=mod;
return x;
}
modint<mod>fpof(long long x)const{
if(x<0)return inv().fpof(-x);
if(x==0)return 1;
auto c=((*this)*(*this)).fpof(x/2);
if(x&1)return c*(*this);
else return c;
}
modint<mod>inv()const{
return fpof(mod-2);
}
modint<mod>operator/(modint<mod>c){
return (*this)*c.inv();
}
operator int(){
return num;
}
modint<mod>operator+=(modint<mod> c){
return (*this)=(*this)+c;
}
modint<mod>operator-=(modint<mod> c){
return (*this)=(*this)-c;
}
modint<mod>operator*=(modint<mod> c){
return (*this)=(*this)*c;
}
modint<mod>operator/=(modint<mod> c){
return (*this)=(*this)/c;
}
modint<mod>operator-(){
return mod-num;
}
friend ostream& operator<<(ostream &w,modint<mod>&&x){
w<<x.num;
return w;
}
friend istream& operator>>(istream &w,modint<mod>&x){
w>>x.num;
x.num%=mod;
return w;
}
bool operator==(modint<mod>x){
return num==x.num;
}
};
#define int long long
template<class type,int N>
struct matrix{
type a[N+2][N+2];
int n;
type* operator[](int pos){
return a[pos];
}
matrix<type,N> operator*(matrix<type,N>b){
matrix<type,N>ans;
ans.n=n;
for(int i=1;i<=n;i++){
for(int j=1;j<=n;j++){
for(int k=1;k<=n;k++){
ans[i][j]+=a[i][k]*b[k][j];
}
}
}
return ans;
}
};
template<class type>
type fp(type a,int b){
if(b==0)return type();
if(b==1)return a;
type w=fp(a*a,b/2);
if(b%2)return w*a;
return w;
}
template<int N>
struct yw_int_array{
struct three21bit{
int a:21;
int b:21;
int c:21;
}a[N/3+2];
struct ref{
three21bit& s;
char type;
operator int(){
if(type==0)return s.a;
if(type==1)return s.b;
return s.c;
}
ref& operator=(int x){
if(type==0)s.a=x;
else if(type==1)s.b=x;
else s.c=x;
return (*this);
}
};
ref operator[](int pos){
char w=pos%3;
return {a[pos/3],(char)w};
}
};
template<class type,int N>
struct backup_array{
type name[N+5];
vector<vector<pair<int,int>>>cc;
void new_array(){
cc.push_back(vector<pair<int,int>>());
}
backup_array(){
cc.resize(1);
}
struct x{
int id;
type* name;
vector<vector<pair<int,int>>> &cc;
operator type(){
return name[id];
}
type operator=(type w){
cc.back().push_back({id,name[id]});
name[id]=w;
return w;
}
};
x operator[](int pos){
return {pos,name,cc};
}
void backup(){
reverse(cc.back().begin(),cc.back().end());
for(auto &x:cc.back()){
name[x.first]=x.second;
}
cc.pop_back();
}
};
template<class type,int N>
struct Math{
type jc[N+5],inv[N+5],invjc[N+5];
Math(){
jc[0]=jc[1]=inv[1]=invjc[1]=invjc[0]=1;
for(int i=2;i<=N;i++){
jc[i]=jc[i-1]*type(i);
}
invjc[N]=type(1)/jc[N];
for(int i=N-1;i>=2;i--){
invjc[i]=invjc[i+1]*type(i+1);
}
for(int i=1;i<=N;i++){
inv[i]=invjc[i]*jc[i-1];
}
}
type binom(int a,int b){
return jc[a]*invjc[b]*invjc[a-b];
}
type catalan(int n){
return binom(2*n,n)/type(n+1);
}
};
template<class type,int num,int maxnum>
struct pows{
type w[maxnum+5];
pows(){
w[0]=type(1);
for(int i=1;i<=maxnum;i++)w[i]=w[i-1]*type(num);
}
type operator[](int pos){
return w[pos];
}
};
#ifdef hash
namespace hashing{
constexpr static int N=5000006;//5e6
constexpr static int count=1;
constexpr static int mods[count]={1000000007};
constexpr static int bases[count]={37};
constexpr static char start='a';
int hash_base[count][N+5];
void init(){
for(int i=0;i<count;i++){
hash_base[i][0]=1;
for(int j=1;j<=N+2;j++){
hash_base[i][j]=hash_base[i][j-1]*bases[i]%mods[i];
}
}
}
struct hash{
int size;
int has[count];
};
bool operator==(const hash&a,const hash&b){
if(a.size!=b.size)return 0;
for(int i=0;i<count;i++){
if(a.has[i]!=b.has[i])return 0;
}
return 1;
}
hash operator+(const hash&a,const hash&b){
hash res;
res.size=a.size+b.size;
for(int i=0;i<count;i++){
res.has[i]=(a.has[i]*hash_base[i][b.size]%mods[i]+b.has[i])%mods[i];
}
return res;
}
hash operator*(const hash&a,int b){
if(!b)return {};
if(b==1)return a;
auto c=(a+a)*(b/2);
if(b&1)return c+a;
return c;
}
struct hashing_base{
int p[count][N+5];
int n;
void init(const string&c,int l,int r){
n=r-l+1;
for(int i=0;i<count;i++){
int cnt=1;
for(int j=l;j<=r;j++){
p[i][cnt]=(p[i][cnt-1]*bases[i]+(c[j]-'a'))%mods[i];
cnt++;
}
}
}
void init(const string&c){
init(c,0,(int)c.size()-1);
}
hash substr(int l,int r){
hash res;
res.size=r-l+1;
for(int i=0;i<count;i++){
res.has[i]=(p[i][r]-p[i][l-1]*hash_base[i][r-l+1]%mods[i]+mods[i])%mods[i];
}
return res;
}
hash operator[](int pos){
return substr(pos,pos);
}
hash operator[](pair<int,int>pos){
return substr(pos.first,pos.second);
}
};
};
#endif
#ifdef use_seg_tree
template<class type,class laz_type,int len>
struct segment_tree{
type a[len<<2];
laz_type laz[len<<2];
void pushup(int now){
PUSHUP_VALUE
}
void pushdown(int now,int l,int r){
PUSHDOWN_VALUE
}
void build(int now,int l,int r){
if(l+1==r){
FIRST_VALUE
return;
}
LAZ_CLEAR
int mid=(l+r)>>1;
build(now<<1,l,mid);
build(now<<1|1,mid,r);
pushup(now);
}
void do1(int now,int l,int r,int L,int R,...){
if(l+1!=r)pushdown(now,l,r);
if(R<=l||r<=L)return;
if(L<=l&&r<=R){
FULL_BLOCK_VALUE
return;
}
int mid=(l+r)>>1;
do1(now<<1,l,mid,L,R,...);
do1(now<<1|1,mid,r,L,R,...);
pushup(now);
}
void do1_one(int now,int l,int r,int p,...){
if(l+1!=r)pushdown(now,l,r);
if(l+1==r){
DO1_VALUE
return;
}
int mid=(l+r)>>1;
if(p<mid)do1_one(now<<1,l,mid,p,...);
else do1_one(now<<1|1,mid,r,p,...);
pushup(now);
}
type qu1(int now,int l,int r,int L,int R){
if(l+1!=r)pushdown(now,l,r);
if(R<=l||r<=L)return BASE_VALUE
if(L<=l&&r<=R)return a[now];
int mid=(l+r)>>1;
return RETURN_VALVE qu1(now<<1,l,mid,L,R)+qu1(now<<1|1,mid,r,L,R);
}
type qu1_one(int now,int l,int r,int p){
if(l+1!=r)pushdown(now,l,r);
if(l+1==r)return a[now];
int mid=(l+r)>>1;
if(p<mid)return qu1_one(now<<1,l,mid,p);
else return qu1_one(now<<1|1,mid,r,p);
}
};
#endif
#define unreach() {assert(0);__builtin_unreachable();}
#define mod 998244353
#define mint modint<mod>
//pows<mint,2,10000007>tp;note the size
//Math<mint,1000006>math;
//vector<int>g[1000006]
mint dp[403][403][403];
int a[403],count[403];
mint cdp[403][403];
mint dc[403];
signed main(){
ios::sync_with_stdio(false);
cin.tie(0);cout.tie(0);
int n;
cin>>n;
for(int i=1;i<=n;i++){
cin>>a[i];
count[a[i]]++;
}
sort(a+1,a+1+n);
int m=*max_element(a+1,a+1+n)+10;
dp[m][0][0]=1;
mint res=1;
for(int i=m;i>=0;i--){
for(int j=0;j<=n;j++){
for(int k=0;k<=n;k++){
if(dp[i][j][k].num){
// cout<<i<<' '<<j<<' '<<k<<' '<<dp[i][j][k]<<endl;
int num=count[i];
for(int q=0;j+q<=num+n/max(1ll,i);q++){
if(j+q<=num){
if(i){
dp[i-1][j][k+num-j-q]+=dp[i][j][k];
}else{
if(j){
res+=dp[i][j][k];
}
}
}else{
if(i){
if(j+(j+q-num)<=n){
dp[i-1][j+(j+q-num)][k]+=dp[i][j][k];
}
}else{
if((j+q-num)<=k){
res+=dp[i][j][k];
}
}
}
}
}
}
}
}
cdp[m+1][0]=1;
for(int i=m;i>=0;i--){
for(int j=0;j<=count[i];j++){
for(int k=0;k<=n;k++){
cdp[i][k+j]+=cdp[i+1][k];
}
if(j==count[i]-1){
for(int d=0;d<=n;d++){
dc[d]=cdp[i][d];
}
if(i==*min_element(a+1,a+1+n))dc[0]-=mint(1);
for(int d=n-1;d>=0;d--){
dc[d]+=dc[d+1];
}
vector<int>p(m+1);
p[i]=1;
int c=1;
int f=-1;
for(int w=i;w>=0;w--){
if(w!=i){
int z=min(count[w],p[w]);
p[w]-=z;
c+=count[w]-z;
}
if(w==0){
f=p[w];
}else{
for(int j=w-1;j>=0;j--){
p[j]+=p[w];
p[j]=min(p[j],2*n+1);
}
p[w]=0;
}
}
assert(~f);
int h=max(0ll,f-c);
// cout<<h<<' '<<dc[h]<<endl;
if(h<=n)res+=dc[h];
}
}
}
cout<<res;
return 0;
}
}
bool en;
signed main(){
#ifdef LOCAL_WRK
cerr<<"[Static Memory : "<<fixed<<((&st)-(&en))/1048576.0<<"MB]"<<endl;
#endif
#ifdef hash
_wrk::hashing::init();
#endif
return _wrk::main();
}