結果
問題 | No.1112 冥界の音楽 |
ユーザー | hedwig100 |
提出日時 | 2020-07-10 22:40:58 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 31 ms / 2,000 ms |
コード長 | 3,854 bytes |
コンパイル時間 | 1,785 ms |
コンパイル使用メモリ | 176,036 KB |
実行使用メモリ | 6,824 KB |
最終ジャッジ日時 | 2024-10-11 10:02:01 |
合計ジャッジ時間 | 2,989 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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
6,820 KB |
testcase_01 | AC | 2 ms
6,820 KB |
testcase_02 | AC | 2 ms
6,820 KB |
testcase_03 | AC | 2 ms
6,820 KB |
testcase_04 | AC | 2 ms
6,820 KB |
testcase_05 | AC | 2 ms
6,816 KB |
testcase_06 | AC | 3 ms
6,816 KB |
testcase_07 | AC | 2 ms
6,816 KB |
testcase_08 | AC | 2 ms
6,816 KB |
testcase_09 | AC | 2 ms
6,816 KB |
testcase_10 | AC | 2 ms
6,816 KB |
testcase_11 | AC | 3 ms
6,820 KB |
testcase_12 | AC | 2 ms
6,820 KB |
testcase_13 | AC | 3 ms
6,816 KB |
testcase_14 | AC | 10 ms
6,816 KB |
testcase_15 | AC | 4 ms
6,820 KB |
testcase_16 | AC | 2 ms
6,816 KB |
testcase_17 | AC | 5 ms
6,820 KB |
testcase_18 | AC | 5 ms
6,816 KB |
testcase_19 | AC | 2 ms
6,820 KB |
testcase_20 | AC | 2 ms
6,820 KB |
testcase_21 | AC | 9 ms
6,824 KB |
testcase_22 | AC | 9 ms
6,824 KB |
testcase_23 | AC | 4 ms
6,816 KB |
testcase_24 | AC | 2 ms
6,820 KB |
testcase_25 | AC | 2 ms
6,816 KB |
testcase_26 | AC | 2 ms
6,816 KB |
testcase_27 | AC | 2 ms
6,816 KB |
testcase_28 | AC | 2 ms
6,820 KB |
testcase_29 | AC | 2 ms
6,816 KB |
testcase_30 | AC | 10 ms
6,820 KB |
testcase_31 | AC | 2 ms
6,816 KB |
testcase_32 | AC | 11 ms
6,816 KB |
testcase_33 | AC | 2 ms
6,816 KB |
testcase_34 | AC | 2 ms
6,816 KB |
testcase_35 | AC | 2 ms
6,820 KB |
testcase_36 | AC | 31 ms
6,820 KB |
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]; } }; using Matrix = vector<vector<mint>>; Matrix mat_mul(Matrix &A,Matrix &B) { Matrix ans(A.size(),vector<mint>(B[0].size(),0)); for (int i = 0;i < A.size(); i++) { for (int j = 0;j < A[0].size();j ++) { for (int k = 0;k < A[0].size(); k++) { ans[i][j] += A[i][k]*B[k][j]; } } } return ans; } Matrix mat_pow(Matrix &A,long long N) { Matrix ans(A.size(),vector<mint>(A.size(),0)); for (int i = 0;i < A.size();i ++) ans[i][i] = 1; Matrix X = A; while (N > 0) { if (N&1) ans = mat_mul(ans,X); N >>= 1; X = mat_mul(X,X); } return ans; } int main() { int K,M; ll N; cin >> K >> M >> N; Matrix A(K*K,vector<mint>(K*K,0)); rep(i,M) { int p,q,r; cin >> p >> q >> r; --p; --q; -- r; A[K*q + r][K*p + q] += 1; } A = mat_pow(A,N - 2); //rep(i,K*K) {rep(j,K*K) {cout << A[i][j];} cout << '\n';} mint ans = 0; rep(i,K){ rep(j,K) { ans += A[i*K][j]; } } cout << ans << '\n'; return 0; }