結果
| 問題 |
No.1111 コード進行
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2020-07-10 22:03:50 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 168 ms / 2,000 ms |
| コード長 | 3,456 bytes |
| コンパイル時間 | 1,760 ms |
| コンパイル使用メモリ | 175,972 KB |
| 実行使用メモリ | 236,380 KB |
| 最終ジャッジ日時 | 2024-10-11 09:16:07 |
| 合計ジャッジ時間 | 9,664 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 * 2 |
| other | AC * 48 |
ソースコード
#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); i ++)
using namespace std;
using ll = long long;
using PL = pair<ll,ll>;
using P = pair<int,int>;
constexpr int INF = 1000000000;
constexpr long long HINF = 1000000000000000;
constexpr long long MOD = 1000000007;// = 998244353;
constexpr double EPS = 1e-4;
constexpr double PI = 3.14159265358979;
const int tyou[7] = {0,2,4,5,7,9,11};
template<int Modulus>
struct ModInt {
long long x;
ModInt(long long x = 0) :x((x%Modulus + Modulus)%Modulus) {}
constexpr ModInt &operator+=(const ModInt a) {if ((x += a.x) >= Modulus) x -= Modulus; return *this;}
constexpr ModInt &operator-=(const ModInt a) {if ((x += Modulus - a.x) >= Modulus) x -= Modulus; return *this;}
constexpr ModInt &operator*=(const ModInt a) {(x *= a.x) %= Modulus; return *this;}
constexpr ModInt &operator/=(const ModInt a) {return *this *= a.inverse();}
constexpr ModInt operator+(const ModInt a) const {return ModInt(*this) += a.x;}
constexpr ModInt operator-(const ModInt a) const {return ModInt(*this) -= a.x;}
constexpr ModInt operator*(const ModInt a) const {return ModInt(*this) *= a.x;}
constexpr ModInt operator/(const ModInt a) const {return ModInt(*this) /= a.x;}
friend constexpr ostream& operator<<(ostream& os,const ModInt<Modulus>& a) {return os << a.x;}
friend constexpr istream& operator>>(istream& is,ModInt<Modulus>& a) {return is >> a.x;}
ModInt inverse() const {// x ^ (-1)
long long a = x,b = Modulus,p = 1,q = 0;
while (b) {long long d = a/b; a -= d*b; swap(a,b); p -= d*q; swap(p,q);}
return ModInt(p);
}
ModInt pow(long long N) {// x ^ N
ModInt a = 1;
while (N) {
if (N&1) a *= *this;
*this *= *this;
N >>= 1;
}
return a;
}
};
using mint = ModInt<1000000007>;
//using mint = ModInt<998244353>;
struct Combination {
int N;
//using mint = ModInt<1000000007>;
//using mint = ModInt<998244353>;
vector<mint> fact,ifact,invs;
Combination(int N): N(N),fact(N + 1),ifact(N + 1) {
fact[0] = fact[1] = 1;
ifact[0] = ifact[1] = 1;
for (int i = 2;i < N + 1;++i) {fact[i] = fact[i - 1] * i;}
ifact[N] = fact[N].inverse();
for (int i = N;i >= 1;--i) {ifact[i - 1] = ifact[i] * i;}
}
void invs_build() {
invs.resize(N + 1);
invs[1] = 1;
for (int i = 2;i < N + 1;++i) invs[i] = fact[i] * ifact[i - 1];
}
mint operator()(int n, int k) {
if (k < 0 || k > n) return 0;
return fact[n]*ifact[k]*ifact[n - k];
}
mint npk(int n,int k) {
if (k < 0 || k > n) return 0;
return fact[n]*ifact[n - k];
}
};
mint dp[310][310][310];
int main() {
int N,M,K; cin >> N >> M >> K;
vector<vector<P>> code(310);
rep(i,M) {
int P,Q,C;
cin >> P >> Q >> C;
--P; --Q;
code[P].emplace_back(Q,C);
}
rep(i,300) {
dp[1][i][0] = 1;
}
for (int i = 1;i < N;++i) {
for (int j = 0;j < 300;++j) {
for (P &p:code[j]) {
for (int k = 0;k <= K;++k) {
if (k + p.second > K) continue;
dp[i + 1][p.first][k + p.second] += dp[i][j][k];
}
}
}
}
mint ans = 0;
rep(i,300) {
ans += dp[N][i][K];
}
cout << ans << '\n';
return 0;
}