結果
問題 |
No.3004 ヤング図形
|
ユーザー |
![]() |
提出日時 | 2025-01-17 22:27:08 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
MLE
|
実行時間 | - |
コード長 | 3,310 bytes |
コンパイル時間 | 3,467 ms |
コンパイル使用メモリ | 277,680 KB |
実行使用メモリ | 817,920 KB |
最終ジャッジ日時 | 2025-01-17 22:28:08 |
合計ジャッジ時間 | 28,942 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 6 MLE * 19 |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; const int INF = 1e9 + 10; const ll INFL = 4e18; template <ll MOD> struct ModInt { ll value; ModInt(ll x = 0) { value = (x >= 0 ? x % MOD : MOD - (-x) % MOD); } ModInt operator-() const { return ModInt(-value); } ModInt operator+() const { return ModInt(*this); } ModInt& operator+=(const ModInt& other) { value += other.value; if (value >= MOD) value -= MOD; return *this; } ModInt& operator-=(const ModInt& other) { value += MOD - other.value; if (value >= MOD) value -= MOD; return *this; } ModInt& operator*=(const ModInt other) { value = value * other.value % MOD; return *this; } ModInt& operator/=(ModInt other) { (*this) *= other.inv(); return *this; } ModInt operator+(const ModInt& other) const { return ModInt(*this) += other; } ModInt operator-(const ModInt& other) const { return ModInt(*this) -= other; } ModInt operator*(const ModInt& other) const { return ModInt(*this) *= other; } ModInt operator/(const ModInt& other) const { return ModInt(*this) /= other; } ModInt pow(ll x) const { ModInt ret(1), mul(value); while (x) { if (x & 1) ret *= mul; mul *= mul; x >>= 1; } return ret; } ModInt inv() const { return pow(MOD - 2); } bool operator==(const ModInt& other) const { return value == other.value; } bool operator!=(const ModInt& other) const { return value != other.value; } friend ostream& operator<<(ostream& os, const ModInt& x) { return os << x.value; } friend istream& operator>>(istream& is, ModInt& x) { ll v; is >> v; x = ModInt<MOD>(v); return is; } static constexpr ll get_mod() { return MOD; } }; using Mod998 = ModInt<998244353>; using Mod107 = ModInt<1000000007>; template <typename T> struct Combinatorics { Combinatorics(int n) { fac = vector<T>(n + 1); finv = vector<T>(n + 1); fac[0] = 1; for (int i = 1; i <= n; i++) fac[i] = fac[i - 1] * i; finv[n] = fac[n].inv(); for (int i = n; i >= 1; i--) finv[i - 1] = finv[i] * i; } T comb(ll n, ll r) { if (n < 0 || r < 0 || n - r < 0) return 0; return fac[n] * finv[r] * finv[n - r]; } T perm(ll n, ll r) { if (n < 0 || r < 0 || n - r < 0) return 0; return fac[n] * finv[n - r]; } T fact(int n) { return fac[n]; } T factinv(int n) { return finv[n]; } T operator()(ll n, ll r) { return comb(n, r); } private: vector<T> fac, finv; }; using mint = Mod998; int main() { int K; cin >> K; vector<int> L(K), M(K); int N = 0; for (int i = 0; i < K; i++) { cin >> L[i] >> M[i]; N += L[i] * M[i]; } Combinatorics<mint> C(N + 10); mint ans = C.fact(N); for (int i = 0; i < K; i++) ans *= C.factinv(L[i] * M[i]); for (int i = 0; i < K; i++) { int base = L[i]; mint res = 1; for (int t = 0; t < M[i] - 1; t++) { int add = L[i] - 1; base += add; res *= C(base, add); base++; } ans *= res; } cout << ans << endl; }