結果
問題 | No.1667 Forest |
ユーザー | nawawan |
提出日時 | 2021-09-04 18:44:34 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 299 ms / 3,000 ms |
コード長 | 3,507 bytes |
コンパイル時間 | 2,102 ms |
コンパイル使用メモリ | 207,684 KB |
実行使用メモリ | 13,772 KB |
最終ジャッジ日時 | 2024-06-01 06:00:24 |
合計ジャッジ時間 | 5,288 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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 | 299 ms
13,772 KB |
testcase_01 | AC | 299 ms
13,748 KB |
testcase_02 | AC | 293 ms
13,616 KB |
testcase_03 | AC | 42 ms
13,132 KB |
testcase_04 | AC | 288 ms
13,720 KB |
testcase_05 | AC | 188 ms
13,520 KB |
testcase_06 | AC | 130 ms
13,448 KB |
testcase_07 | AC | 94 ms
13,264 KB |
testcase_08 | AC | 67 ms
13,188 KB |
testcase_09 | AC | 53 ms
13,136 KB |
testcase_10 | AC | 48 ms
13,136 KB |
testcase_11 | AC | 40 ms
13,132 KB |
testcase_12 | AC | 39 ms
13,132 KB |
testcase_13 | AC | 39 ms
13,096 KB |
testcase_14 | AC | 38 ms
13,000 KB |
testcase_15 | AC | 39 ms
13,004 KB |
testcase_16 | AC | 38 ms
13,004 KB |
testcase_17 | AC | 39 ms
13,088 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; struct modint{ long long val; modint(): val(0) {} modint(long long x){ if(x < 0) val = x % mod() + mod(); else val = x % mod(); } modint(const modint &t){ val = t.val; } static int &mod(){ static int m = 0; return m; } static void set_mod(int md){ mod() = md; } modint& operator =(const modint m){ val = m.val; return *this; } modint operator -(){ return modint(-val); } modint& operator-=(const modint &m){ val -= m.val; if(val < 0) val += mod(); return *this; } modint& operator+=(const modint &m){ val += m.val; if(val >= mod()) val -= mod(); return *this; } modint& operator*=(const modint &m){ val *= m.val; val %= mod(); return *this; } modint& operator/=(modint m){ *this *= m.inv(); return *this; } modint inv(){ long long x = 1, y = 0; long long a = val, b = mod(); while(b != 0){ long long t = a / b; a -= t * b; x -= t * y; swap(a, b); swap(x, y); } x %= mod(); if(x < 0) x += mod(); return modint(x); } modint pow(long long k){ long long res = 1; long long v = val; while(k > 0){ if(k & 1) res = res * v % mod(); v = v * v % mod(); k >>= 1; } return modint(res); } bool operator==(const modint &m){ return val == m.val; } modint operator+(const modint &m){ return modint(*this) += m; } modint operator-(const modint &m){ return modint(*this) -= m; } modint operator*(const modint &m){ return modint(*this) *= m; } modint operator/(const modint &m){ return modint(*this) /= m; } bool operator!=(const modint &m){ return modint(*this).val != m.val; } bool operator!=(const int &m){ return modint(*this).val != m; } }; using mint = modint; const int MAX = 410000; mint fac[MAX], finv[MAX], inv[MAX]; //MAX < MOD void COMinit(){ fac[0] = fac[1] = 1; finv[0] = finv[1] = 1; inv[1] = 1; for(int i = 2; i < MAX; i++){ fac[i] = fac[i - 1] * i; inv[i] = mint(mint::mod()) - inv[mint::mod() % i] * (mint::mod() / i); finv[i] = finv[i - 1] * inv[i]; } } mint COM(int n, int k){ if (n < k) return 0; if (n < 0 || k < 0) return 0; return fac[n] * finv[k] * finv[n - k]; } mint repow(long long x, long long y){ if(y == 0) return 1; mint res = 1; mint x2 = x; while(y > 0){ if(y & 1) res = res * x2; x2 = x2 * x2; y >>= 1; } return res; } int main(){ int N, MOD; cin >> N >> MOD; mint::set_mod(MOD); COMinit(); vector<vector<mint>> dp(N + 1, vector<mint>(N + 1)); dp[0][0] = 1; vector<mint> tr(N + 1); for(int i = 2; i <= N; i++) { tr[i] = repow(i, i - 2); } for(int i = 0; i < N; i++){ for(int j = 0; j <= i; j++){ if(i != 0 && i == j) continue; for(int k = 1; k <= N - i; k++){ if(k == 1) dp[i + 1][j] += dp[i][j]; else dp[i + k][j + k - 1] += dp[i][j] * COM(N - i - 1, k - 1) * tr[k]; } } } for(int i = 0; i < N; i++) cout << dp[N][i].val << endl; }