結果
問題 | No.269 見栄っ張りの募金活動 |
ユーザー | minami |
提出日時 | 2019-04-03 13:59:12 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 28 ms / 5,000 ms |
コード長 | 2,594 bytes |
コンパイル時間 | 1,612 ms |
コンパイル使用メモリ | 172,044 KB |
実行使用メモリ | 11,136 KB |
最終ジャッジ日時 | 2024-06-01 04:51:00 |
合計ジャッジ時間 | 2,763 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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 | 2 ms
6,812 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 3 ms
6,944 KB |
testcase_04 | AC | 11 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,944 KB |
testcase_06 | AC | 2 ms
6,944 KB |
testcase_07 | AC | 28 ms
11,136 KB |
testcase_08 | AC | 2 ms
6,940 KB |
testcase_09 | AC | 8 ms
6,940 KB |
testcase_10 | AC | 2 ms
6,940 KB |
testcase_11 | AC | 3 ms
6,944 KB |
testcase_12 | AC | 6 ms
6,944 KB |
testcase_13 | AC | 5 ms
6,944 KB |
testcase_14 | AC | 3 ms
6,940 KB |
testcase_15 | AC | 4 ms
6,940 KB |
testcase_16 | AC | 6 ms
6,940 KB |
testcase_17 | AC | 3 ms
6,944 KB |
testcase_18 | AC | 15 ms
8,064 KB |
testcase_19 | AC | 6 ms
6,944 KB |
testcase_20 | AC | 2 ms
6,940 KB |
testcase_21 | AC | 2 ms
6,944 KB |
testcase_22 | AC | 4 ms
6,940 KB |
testcase_23 | AC | 2 ms
6,944 KB |
testcase_24 | AC | 3 ms
6,940 KB |
ソースコード
#include "bits/stdc++.h" using namespace std; #ifdef _DEBUG #include "dump.hpp" #else #define dump(...) #endif //#define int long long #define rep(i,a,b) for(int i=(a);i<(b);i++) #define rrep(i,a,b) for(int i=(b)-1;i>=(a);i--) #define all(c) begin(c),end(c) const int INF = sizeof(int) == sizeof(long long) ? 0x3f3f3f3f3f3f3f3fLL : 0x3f3f3f3f; const int MOD = 1'000'000'007; template<class T> bool chmax(T &a, const T &b) { if (a < b) { a = b; return true; } return false; } template<class T> bool chmin(T &a, const T &b) { if (b < a) { a = b; return true; } return false; } template<int MOD> struct ModInt { static const int kMod = MOD; unsigned x; ModInt() :x(0) {} ModInt(signed x_) { x_ %= MOD; if (x_ < 0)x_ += MOD; x = x_; } ModInt(signed long long x_) { x_ %= MOD; if (x_ < 0)x_ += MOD; x = x_; } int get()const { return (int)x; } ModInt &operator+=(ModInt m) { if ((x += m.x) >= MOD)x -= MOD; return *this; } ModInt &operator-=(ModInt m) { if ((x += MOD - m.x) >= MOD)x -= MOD; return *this; } ModInt &operator*=(ModInt m) { x = (unsigned long long)x*m.x%MOD; return *this; } ModInt &operator/=(ModInt m) { return *this *= m.inverse(); } ModInt operator+(ModInt m)const { return ModInt(*this) += m; } ModInt operator-(ModInt m)const { return ModInt(*this) -= m; } ModInt operator*(ModInt m)const { return ModInt(*this) *= m; } ModInt operator/(ModInt m)const { return ModInt(*this) /= m; } ModInt operator-()const { return ModInt(MOD - x); } bool operator==(ModInt m)const { return x == m.x; } bool operator!=(ModInt m)const { return x != m.x; } ModInt inverse()const { signed a = x, b = MOD, u = 1, v = 0; while (b) { signed t = a / b; a -= t * b; swap(a, b); u -= t * v; swap(u, v); } if (u < 0)u += MOD; return ModInt(u); } }; template<int MOD> ostream &operator<<(ostream &os, const ModInt<MOD> &m) { return os << m.x; } template<int MOD> istream &operator>>(istream &is, ModInt<MOD> &m) { signed long long s; is >> s; m = ModInt<MOD>(s); return is; }; template<int MOD> ModInt<MOD> pow(ModInt<MOD> a, unsigned long long k) { ModInt<MOD> r = 1; while (k) { if (k & 1)r *= a; a *= a; k >>= 1; } return r; } using mint = ModInt<MOD>; signed main() { cin.tie(0); ios::sync_with_stdio(false); int N, S, K; cin >> N >> S >> K; vector<vector<mint>> dp(N, vector<mint>(S + 1)); dp[0][0] = 1; rep(i, 0, N) { rep(j, 0, S + 1) { if (i > 0 && j - (N - i)*K >= 0) dp[i][j] += dp[i - 1][j - (N - i)*K]; if (j - (N - i) >= 0) dp[i][j] += dp[i][j - (N - i)]; } } //dump(dp); cout << dp[N - 1][S] << endl; return 0; }