結果
| 問題 |
No.3123 Inversion
|
| コンテスト | |
| ユーザー |
Yu_212
|
| 提出日時 | 2025-04-19 22:09:30 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 3,117 ms / 10,000 ms |
| コード長 | 4,609 bytes |
| コンパイル時間 | 4,064 ms |
| コンパイル使用メモリ | 281,732 KB |
| 実行使用メモリ | 244,480 KB |
| 最終ジャッジ日時 | 2025-04-19 22:10:47 |
| 合計ジャッジ時間 | 75,697 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 21 |
ソースコード
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const int iinf = 1e9;
const ll inf = 1e18;
template<ll mod>
struct Mint {
using M=Mint; ll v;
M& put(ll x) { v=(x<mod)?x:x-mod; return *this; }
Mint(ll x=0) { put(x%mod+mod); }
M operator+(M m) {return M().put(v+m.v);}
M operator-(M m) {return M().put(v+mod-m.v);}
M operator*(M m) {return M().put(v*m.v%mod);}
M operator/(M m) {return M().put(v*m.inv().v%mod);}
M operator+=(M m) { return put(v+m.v); }
M operator-=(M m) { return put(v+mod-m.v); }
M operator*=(M m) { return put(v*m.v%mod); }
M operator/=(M m) { return put(v*m.inv().v%mod); }
bool operator==(M m) { return v==m.v; }
M pow(ll m) const {
M x=v, res=1;
while (m) {
if (m&1) res=res*x;
x=x*x; m>>=1;
}
return res;
}
M inv() { return pow(mod-2); }
};
template<ll mod>
ostream&operator<<(ostream&o,Mint<mod>v){return o<<v.v;}
template<typename T>
ostream& operator<<(ostream &o, vector<T> v) {
for (int i = 0; i < v.size(); i++)
o << v[i] << (i+1<v.size()?" ":"");
return o;
}
template <typename T>
struct SegTree {
using F = function<T(T, T)>;
int n;
F f;
T ti;
vector<T> dat;
SegTree() {}
SegTree(F f, T ti,int num) : f(f), ti(ti) {
n = max(__bit_ceil(num), 1);
dat.assign(n << 1, ti);
}
SegTree(F f,T ti,vector<T>&v):SegTree(f,ti,v.size()){
for (int i = 0; i < v.size(); i++)
dat[n + i] = v[i];
for(int i=n-1;i;i--) dat[i]=f(dat[i*2], dat[i*2+1]);
}
void set_val(int k, T x) {
dat[k += n] = x;
while(k >>= 1) dat[k] = f(dat[k*2], dat[k*2+1]);
}
T query(int a, int b) {
if (a >= b) return ti;
T vl = ti, vr = ti;
for (int l=a+n, r=b+n; l<r; l>>=1, r>>=1) {
if (l & 1) vl = f(vl, dat[l++]);
if (r & 1) vr = f(dat[--r], vr);
}
return f(vl, vr);
}
};
const int MOD = 998244353;
using mint = Mint<MOD>;
vector<ll> involution_counts(int N, ll mod) {
vector<ll> a(N+1);
if (N >= 0) a[0] = 1;
if (N >= 1) a[1] = 1;
for (int i = 2; i <= N; ++i) {
a[i] = (a[i-1] + ll(i-1) * a[i-2]) % mod;
}
return a;
}
// 2) inv(P)==P かつ rev(P)==inv(rev(P)) となる順列数
vector<ll> inv_and_rev_involution_counts(int N, ll mod) {
vector<ll> a(N+1);
a[0] = 1;
a[1] = 1;
a[2] = 2;
for (int i = 3; i <= N; ++i) {
if (i & 1) {
a[i] = a[i-1];
} else {
a[i] = (a[i-2]*2+a[i-4]*ll(i-2))%mod;
}
}
return a;
}
// 3) rev(inv(P)) == inv(rev(P)) == P となる順列数
vector<ll> rev_inv_eq_inv_rev_eq_P_counts(int N, ll mod) {
vector<ll> a(N+1);
int M = N/2;
// m! を前計算
vector<ll> v(M+1, 1);
for (int i = 1; i <= M; ++i)
v[i] = i;
SegTree<ll> seg([&](ll x, ll y) { return (x*y)%mod; }, 1, v);
for (int n = 0; n <= N; ++n) {
int m = n / 2;
// m が偶数なら m!/(m/2)!, そうでなければ 0
if (m % 2 == 0) {
a[n] = seg.query(m/2+1, m+1);
// a[n] = fact[m] / fact[m/2];
} else {
a[n] = 0;
}
}
return a;
}
// 4) rev(inv(P)) == inv(rev(P)) となる順列数(R と可換)
vector<ll> commute_counts(int N, ll mod) {
vector<ll> a(N+1);
int M = N / 2;
vector<ll> fact(M+1, 1);
vector<ll> pow2(M+1, 1);
for (int i = 1; i <= M; ++i) {
fact[i] = fact[i-1] * i % mod;
pow2[i] = pow2[i-1] * 2 % mod;
}
for (int n = 0; n <= N; ++n) {
int m = n / 2;
a[n] = fact[m] * pow2[m] % mod;
}
return a;
}
int main() {
cin.tie(0)->sync_with_stdio(false);
int n;
ll m;
cin >> n >> m;
// int N = 500;
int N = 5000001;
vector<ll> fact(N+1, 1);
for (int i = 1; i <= N; ++i)
fact[i] = fact[i-1] * i % m;
auto a = involution_counts(N,m);
auto b = inv_and_rev_involution_counts(N,m);
auto c = rev_inv_eq_inv_rev_eq_P_counts(N,m);
auto d = commute_counts(N,m);
// cout << a<< endl;
// cout << b<< endl;
// cout << c<< endl;
// cout <<d<< endl;
vector<ll> ans(N+1);
for (int i = 0; i <= N; ++i) {
ans[i] = fact[i]*8-a[i]*8+b[i]*6-c[i]*2-d[i]*4;
ans[i] %= m;
if (ans[i] < 0) ans[i] += m;
}
ans[1] = 1 % m;
// cout << fact << endl;
// cout << ans << endl;
for (int i = 0; i < n; i++) {
int t;
cin >> t;
cout << ans[t] << endl;
}
}
Yu_212