結果
問題 | No.269 見栄っ張りの募金活動 |
ユーザー | yna |
提出日時 | 2020-02-20 08:58:10 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 32 ms / 5,000 ms |
コード長 | 2,719 bytes |
コンパイル時間 | 1,911 ms |
コンパイル使用メモリ | 167,612 KB |
実行使用メモリ | 11,512 KB |
最終ジャッジ日時 | 2024-10-08 18:43:27 |
合計ジャッジ時間 | 2,919 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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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 | 5 ms
11,344 KB |
testcase_01 | AC | 5 ms
11,312 KB |
testcase_02 | AC | 5 ms
11,348 KB |
testcase_03 | AC | 7 ms
11,324 KB |
testcase_04 | AC | 15 ms
11,264 KB |
testcase_05 | AC | 5 ms
11,392 KB |
testcase_06 | AC | 5 ms
11,256 KB |
testcase_07 | AC | 32 ms
11,316 KB |
testcase_08 | AC | 5 ms
11,392 KB |
testcase_09 | AC | 5 ms
11,392 KB |
testcase_10 | AC | 5 ms
11,228 KB |
testcase_11 | AC | 7 ms
11,344 KB |
testcase_12 | AC | 5 ms
11,264 KB |
testcase_13 | AC | 8 ms
11,300 KB |
testcase_14 | AC | 6 ms
11,264 KB |
testcase_15 | AC | 8 ms
11,296 KB |
testcase_16 | AC | 5 ms
11,264 KB |
testcase_17 | AC | 6 ms
11,180 KB |
testcase_18 | AC | 14 ms
11,392 KB |
testcase_19 | AC | 8 ms
11,512 KB |
testcase_20 | AC | 5 ms
11,376 KB |
testcase_21 | AC | 6 ms
11,392 KB |
testcase_22 | AC | 6 ms
11,264 KB |
testcase_23 | AC | 5 ms
11,392 KB |
testcase_24 | AC | 6 ms
11,264 KB |
ソースコード
#include <bits/stdc++.h> #define debug(x) cerr << #x << ": " << x << '\n'; using namespace std; using ll = long long; using P = pair<int, int>; const int INF = (int)1e9; const int MOD = (int)1e9 + 7; // fatorial.cpp depend on this. #ifndef MOD_INT #define MOD_INT template<int mod> struct ModInt{ private: int x; public: ModInt() : x(0){} ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod){} ModInt &operator+=(const ModInt &p){ if((x += p.x) >= mod) x -= mod; return *this; } ModInt &operator-=(const ModInt &p){ if((x += mod - p.x) >= mod) x -= mod; return *this; } ModInt &operator*=(const ModInt &p){ x = (int) (1LL * x * p.x % mod); return *this; } ModInt &operator/=(const ModInt &p){ *this *= p.inverse(); return *this; } ModInt operator-() const {return ModInt(-x);} ModInt operator+(const ModInt &p) const {return ModInt(*this) += p;} ModInt operator-(const ModInt &p) const {return ModInt(*this) -= p;} ModInt operator*(const ModInt &p) const {return ModInt(*this) *= p;} ModInt operator/(const ModInt &p) const {return ModInt(*this) /= p;} bool operator==(const ModInt &p) const {return x == p.x;} bool operator!=(const ModInt &p) const {return x != p.x;} bool operator<(const ModInt &p) const {return x < p.x;} void operator=(const int &p){x = p >= 0 ? p % mod : (mod - (-p) % mod) % mod;} template<typename T> operator T() const {return (T)x;} ModInt inverse() const { int a = x, b = mod, u = 1, v = 0, t; while(b > 0) { t = a / b; swap(a -= t * b, b); swap(u -= t * v, v); } return ModInt(u); } ModInt pow(int64_t n) const { ModInt ret(1), mul(x); while(n > 0) { if(n & 1) ret *= mul; mul *= mul; n >>= 1; } return ret; } friend ostream &operator<<(ostream &os, const ModInt &p){ return os << p.x; } friend istream &operator>>(istream &is, ModInt &a){ int64_t t; is >> t; a = ModInt< mod >(t); return (is); } static int get_mod(){return mod;} }; using mint = ModInt<MOD>; #endif mint dp[20001][101]; int N, S, K; int main(void){ cin >> N >> S >> K; int M = S - N * (N-1) * K / 2; for(int i = 0; i <= M; i++){ for(int j = 0; j <= N; j++){ dp[i][j] = 0; } } if(M < 0){ cout << "0\n"; return 0; } dp[0][0] = 1; for(int j = 0; j <= N; j++){ for(int i = 0; i <= M; i++){ if(j-1 >= 0) dp[i][j] += dp[i][j-1]; if(i-j >= 0 and i != 0) dp[i][j] += dp[i-j][j]; // printf("dp(%d, %d) = ", i, j); // cout << dp[i][j] << '\n'; } } cout << dp[M][N] << '\n'; return 0; }