結果

問題 No.1112 冥界の音楽
ユーザー koyoprokoyopro
提出日時 2020-07-10 23:25:03
言語 C++17
(gcc 13.2.0 + boost 1.83.0)
結果
AC  
実行時間 1,279 ms / 2,000 ms
コード長 4,402 bytes
コンパイル時間 2,213 ms
コンパイル使用メモリ 203,820 KB
実行使用メモリ 30,496 KB
最終ジャッジ日時 2024-04-19 23:58:36
合計ジャッジ時間 6,921 ms
ジャッジサーバーID
(参考情報)
judge3 / judge6
このコードへのチャレンジ
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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 8 ms
30,484 KB
testcase_01 AC 9 ms
30,424 KB
testcase_02 AC 9 ms
30,464 KB
testcase_03 AC 8 ms
30,336 KB
testcase_04 AC 8 ms
30,324 KB
testcase_05 AC 9 ms
30,444 KB
testcase_06 AC 194 ms
30,336 KB
testcase_07 AC 9 ms
30,336 KB
testcase_08 AC 9 ms
30,448 KB
testcase_09 AC 39 ms
30,444 KB
testcase_10 AC 8 ms
30,464 KB
testcase_11 AC 28 ms
30,456 KB
testcase_12 AC 8 ms
30,436 KB
testcase_13 AC 1,254 ms
30,208 KB
testcase_14 AC 175 ms
30,464 KB
testcase_15 AC 32 ms
30,452 KB
testcase_16 AC 9 ms
30,464 KB
testcase_17 AC 49 ms
30,336 KB
testcase_18 AC 48 ms
30,404 KB
testcase_19 AC 9 ms
30,464 KB
testcase_20 AC 16 ms
30,464 KB
testcase_21 AC 140 ms
30,336 KB
testcase_22 AC 205 ms
30,464 KB
testcase_23 AC 52 ms
30,336 KB
testcase_24 AC 9 ms
30,336 KB
testcase_25 AC 9 ms
30,480 KB
testcase_26 AC 9 ms
30,496 KB
testcase_27 AC 8 ms
30,460 KB
testcase_28 AC 9 ms
30,432 KB
testcase_29 AC 8 ms
30,448 KB
testcase_30 AC 43 ms
30,336 KB
testcase_31 AC 8 ms
30,464 KB
testcase_32 AC 42 ms
30,456 KB
testcase_33 AC 9 ms
30,280 KB
testcase_34 AC 9 ms
30,464 KB
testcase_35 AC 8 ms
30,464 KB
testcase_36 AC 1,279 ms
30,464 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#include "bits/stdc++.h"
using namespace std;
#define int long long
#define FOR(i, a, b) for(int i=(a);i<(b);i++)
#define RFOR(i, a, b) for(int i=(b-1);i>=(a);i--)
#define REP(i, n) for(int i=0; i<(n); i++)
#define RREP(i, n) for(int i=(n-1); i>=0; i--)
#define REP1(i, n) for(int i=1; i<=(n); i++)
#define RREP1(i, n) for(int i=(n); i>=1; i--)
#define ALL(a) (a).begin(),(a).end()
#define UNIQUE_SORT(l) sort(ALL(l)); l.erase(unique(ALL(l)), l.end());
#define CONTAIN(a, b) find(ALL(a), (b)) != (a).end()
#define out(...) printf(__VA_ARGS__)
#if DEBUG
#define debug(...) printf(__VA_ARGS__)
#else
#define debug(...) /* ... */
#endif
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;}

void solve();
signed main()
{
#if DEBUG
    std::ifstream in("input.txt");
    std::cin.rdbuf(in.rdbuf());
#endif
    cin.tie(0);
    ios::sync_with_stdio(false);
    solve();
    return 0;
}

/*================================*/
#if DEBUG
#define SIZE 10
#else
#define SIZE 333
#endif

template<int MOD> struct ModInt {
    static const int Mod = MOD; unsigned x; ModInt() : x(0) { }
    ModInt(signed sig) { x = sig < 0 ? sig % MOD + MOD : sig % MOD; }
    ModInt(signed long long sig) { x = sig < 0 ? sig % MOD + MOD : sig % MOD; }
    int get() const { return (int)x; }
    ModInt &operator+=(ModInt that) { if ((x += that.x) >= MOD) x -= MOD; return *this; }
    ModInt &operator-=(ModInt that) { if ((x += MOD - that.x) >= MOD) x -= MOD; return *this; }
    ModInt &operator*=(ModInt that) { x = (unsigned long long)x * that.x % MOD; return *this; }
    ModInt &operator/=(ModInt that) { return *this *= that.inverse(); }
    ModInt operator+(ModInt that) const { return ModInt(*this) += that; }
    ModInt operator-(ModInt that) const { return ModInt(*this) -= that; }
    ModInt operator*(ModInt that) const { return ModInt(*this) *= that; }
    ModInt operator/(ModInt that) const { return ModInt(*this) /= that; }
    ModInt inverse() const { long long a = x, b = MOD, u = 1, v = 0;
        while (b) { long long t = a / b; a -= t * b; std::swap(a, b); u -= t * v; std::swap(u, v); }
        return ModInt(u); }
    bool operator==(ModInt that) const { return x == that.x; }
    bool operator!=(ModInt that) const { return x != that.x; }
    ModInt operator-() const { ModInt t; t.x = x == 0 ? 0 : Mod - x; return t; }
};
template<int MOD> ostream& operator<<(ostream& st, const ModInt<MOD> a) { st << a.get(); return st; };
template<int MOD> ModInt<MOD> operator^(ModInt<MOD> a, unsigned long long k) {
    ModInt<MOD> r = 1; while (k) { if (k & 1) r *= a; a *= a; k >>= 1; } return r; }
typedef ModInt<1000000007> mint;

int N,M,K;
int A[SIZE];
// i番目,3つ前,2つ前,1つ前→組み合わせ数
int DP[2][6][6][6];

struct Tup {
    int a,b,c;
};
// 3*(2^i)番目,前のTupのindex,次のTupのindex→組み合わせ数
mint DP2[62][SIZE][SIZE];
int MOD=1e9+7;
int E[6][6][6];

void solve() {
    cin>>K>>M>>N;
    int p,q,r;
    vector<Tup> tups;
    vector<int> s0;
    REP(i,M) {
        cin>>p>>q>>r;
        --p;--q;--r;
        if (!p) s0.push_back(tups.size());
        tups.push_back({p,q,r});
        E[p][q][r]=1;
    }
    int size = tups.size();
    REP(i,size)REP(j,size) {
        auto [a,b,c] = tups[i];
        auto [d,e,f] = tups[j];
        if (E[b][c][d] && E[c][d][e]) {
            DP2[0][i][j] += 1;
        }
    }
    N -= 3;
    int T = N/3;
    // i番目,-3,-2,-1
    vector<int> ans(size), tmp(size);
    for (int i:s0) {
        ans[i] = 1;
    }
    REP(i,61) {
        REP(j,size)REP(k,size)REP(l,size) {
            DP2[i+1][j][l] += DP2[i][j][k]*DP2[i][k][l];
        }
        if (T & (1LL<<i)) {
            fill(ALL(tmp), 0);
            REP(j,size)REP(k,size) {
                (tmp[k] += ans[j] * DP2[i][j][k].get()) %= MOD;
            }
            REP(j,size) ans[j]=tmp[j];
        }
    }
    REP(i,size) {
        auto [a,b,c] = tups[i];
        DP[0][a][b][c] = ans[i];
    }
    int m = N%3;
    REP(i,m) {
        int from = i%2, to = (i+1)%2;
        REP(j,6)REP(k,6)REP(l,6) DP[to][j][k][l] = 0;
        REP(j,6)REP(k,6)REP(l,6)REP(n,6) {
            if (E[k][l][n]) (DP[to][k][l][n] += DP[from][j][k][l]) %= MOD;
        }
    }
    int ret = 0;
    REP(j,6)REP(k,6) (ret += DP[m%2][j][k][0]) %= MOD;
    cout << ret << endl;
}
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