結果
問題 | No.1112 冥界の音楽 |
ユーザー | iiljj |
提出日時 | 2020-07-10 22:27:02 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 16 ms / 2,000 ms |
コード長 | 10,795 bytes |
コンパイル時間 | 2,725 ms |
コンパイル使用メモリ | 214,616 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-11 09:41:39 |
合計ジャッジ時間 | 3,836 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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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
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 2 ms
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testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 2 ms
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testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 3 ms
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testcase_07 | AC | 2 ms
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testcase_08 | AC | 2 ms
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testcase_09 | AC | 3 ms
5,248 KB |
testcase_10 | AC | 2 ms
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testcase_11 | AC | 2 ms
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testcase_12 | AC | 2 ms
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testcase_13 | AC | 2 ms
5,248 KB |
testcase_14 | AC | 6 ms
5,248 KB |
testcase_15 | AC | 3 ms
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testcase_16 | AC | 3 ms
5,248 KB |
testcase_17 | AC | 3 ms
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testcase_18 | AC | 3 ms
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testcase_19 | AC | 2 ms
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testcase_20 | AC | 2 ms
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testcase_21 | AC | 6 ms
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testcase_22 | AC | 5 ms
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testcase_23 | AC | 3 ms
5,248 KB |
testcase_24 | AC | 2 ms
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testcase_25 | AC | 2 ms
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testcase_26 | AC | 2 ms
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testcase_27 | AC | 2 ms
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testcase_28 | AC | 2 ms
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testcase_29 | AC | 2 ms
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testcase_30 | AC | 6 ms
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testcase_31 | AC | 2 ms
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testcase_32 | AC | 7 ms
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testcase_33 | AC | 2 ms
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testcase_34 | AC | 2 ms
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testcase_35 | AC | 2 ms
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testcase_36 | AC | 16 ms
5,248 KB |
ソースコード
/* #region Head */ // #define _GLIBCXX_DEBUG #include <bits/stdc++.h> using namespace std; using ll = long long; using ull = unsigned long long; using ld = long double; using pll = pair<ll, ll>; template <class T> using vc = vector<T>; template <class T> using vvc = vc<vc<T>>; using vll = vc<ll>; using vvll = vvc<ll>; using vld = vc<ld>; using vvld = vvc<ld>; using vs = vc<string>; using vvs = vvc<string>; template <class T, class U> using um = unordered_map<T, U>; template <class T> using pq = priority_queue<T>; template <class T> using pqa = priority_queue<T, vc<T>, greater<T>>; template <class T> using us = unordered_set<T>; #define REP(i, m, n) for (ll i = (m), i##_len = (ll)(n); i < i##_len; ++(i)) #define REPM(i, m, n) for (ll i = (m), i##_max = (ll)(n); i <= i##_max; ++(i)) #define REPR(i, m, n) for (ll i = (m), i##_min = (ll)(n); i >= i##_min; --(i)) #define REPD(i, m, n, d) for (ll i = (m), i##_len = (ll)(n); i < i##_len; i += (d)) #define REPMD(i, m, n, d) for (ll i = (m), i##_max = (ll)(n); i <= i##_max; i += (d)) #define REPI(itr, ds) for (auto itr = ds.begin(); itr != ds.end(); itr++) #define ALL(x) begin(x), end(x) #define SIZE(x) ((ll)(x).size()) #define PERM(c) \ sort(ALL(c)); \ for (bool c##p = 1; c##p; c##p = next_permutation(ALL(c))) #define UNIQ(v) v.erase(unique(ALL(v)), v.end()); #define endl '\n' #define sqrt sqrtl #define floor floorl #define log2 log2l constexpr ll INF = 1'010'000'000'000'000'017LL; constexpr ll MOD = 1'000'000'007LL; // 1e9 + 7 constexpr ld EPS = 1e-12; constexpr ld PI = 3.14159265358979323846; template <typename T> istream &operator>>(istream &is, vc<T> &vec) { // vector 入力 for (T &x : vec) is >> x; return is; } template <typename T> ostream &operator<<(ostream &os, vc<T> &vec) { // vector 出力 (for dump) os << "{"; REP(i, 0, SIZE(vec)) os << vec[i] << (i == i_len - 1 ? "" : ", "); os << "}"; return os; } template <typename T> ostream &operator>>(ostream &os, vc<T> &vec) { // vector 出力 (inline) REP(i, 0, SIZE(vec)) os << vec[i] << (i == i_len - 1 ? "\n" : " "); return os; } template <typename T, typename U> istream &operator>>(istream &is, pair<T, U> &pair_var) { // pair 入力 is >> pair_var.first >> pair_var.second; return is; } template <typename T, typename U> ostream &operator<<(ostream &os, pair<T, U> &pair_var) { // pair 出力 os << "(" << pair_var.first << ", " << pair_var.second << ")"; return os; } // map, um, set, us 出力 template <class T> ostream &out_iter(ostream &os, T &map_var) { os << "{"; REPI(itr, map_var) { os << *itr; auto itrcp = itr; if (++itrcp != map_var.end()) os << ", "; } return os << "}"; } template <typename T, typename U> ostream &operator<<(ostream &os, map<T, U> &map_var) { return out_iter(os, map_var); } template <typename T, typename U> ostream &operator<<(ostream &os, um<T, U> &map_var) { os << "{"; REPI(itr, map_var) { auto [key, value] = *itr; os << "(" << key << ", " << value << ")"; auto itrcp = itr; if (++itrcp != map_var.end()) os << ", "; } os << "}"; return os; } template <typename T> ostream &operator<<(ostream &os, set<T> &set_var) { return out_iter(os, set_var); } template <typename T> ostream &operator<<(ostream &os, us<T> &set_var) { return out_iter(os, set_var); } template <typename T> ostream &operator<<(ostream &os, pq<T> &pq_var) { pq<T> pq_cp(pq_var); os << "{"; if (!pq_cp.empty()) { os << pq_cp.top(), pq_cp.pop(); while (!pq_cp.empty()) os << ", " << pq_cp.top(), pq_cp.pop(); } return os << "}"; } // dump #define DUMPOUT cerr void dump_func() { DUMPOUT << endl; } template <class Head, class... Tail> void dump_func(Head &&head, Tail &&... tail) { DUMPOUT << head; if (sizeof...(Tail) > 0) DUMPOUT << ", "; dump_func(move(tail)...); } // chmax (更新「される」かもしれない値が前) template <typename T, typename U, typename Comp = less<>> bool chmax(T &xmax, const U &x, Comp comp = {}) { if (comp(xmax, x)) { xmax = x; return true; } return false; } // chmin (更新「される」かもしれない値が前) template <typename T, typename U, typename Comp = less<>> bool chmin(T &xmin, const U &x, Comp comp = {}) { if (comp(x, xmin)) { xmin = x; return true; } return false; } // ローカル用 #define DEBUG_ #ifdef DEBUG_ #define DEB #define dump(...) \ DUMPOUT << " " << string(#__VA_ARGS__) << ": " \ << "[" << to_string(__LINE__) << ":" << __FUNCTION__ << "]" << endl \ << " ", \ dump_func(__VA_ARGS__) #else #define DEB if (false) #define dump(...) #endif struct AtCoderInitialize { static constexpr int IOS_PREC = 15; static constexpr bool AUTOFLUSH = false; AtCoderInitialize() { ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr); cout << fixed << setprecision(IOS_PREC); if (AUTOFLUSH) cout << unitbuf; } } ATCODER_INITIALIZE; void Yn(bool p) { cout << (p ? "Yes" : "No") << endl; } void YN(bool p) { cout << (p ? "YES" : "NO") << endl; } /* #endregion */ /* #region mint */ // 自動で MOD を取る整数 struct mint { ll x; mint(ll x = 0) : x((x % MOD + MOD) % MOD) {} mint &operator+=(const mint a) { if ((x += a.x) >= MOD) x -= MOD; return *this; } mint &operator-=(const mint a) { if ((x += MOD - a.x) >= MOD) x -= MOD; return *this; } mint &operator*=(const mint a) { (x *= a.x) %= MOD; return *this; } mint operator+(const mint a) const { mint res(*this); return res += a; } mint operator-(const mint a) const { mint res(*this); return res -= a; } mint operator*(const mint a) const { mint res(*this); return res *= a; } // O(log(t)) mint pow(ll t) const { if (!t) return 1; mint a = pow(t >> 1); // ⌊t/2⌋ 乗 a *= a; // ⌊t/2⌋*2 乗 if (t & 1) // ⌊t/2⌋*2 == t-1 のとき a *= *this; // ⌊t/2⌋*2+1 乗 => t 乗 return a; } // for prime mod mint inv() const { return pow(MOD - 2); // オイラーの定理から, x^(-1) ≡ x^(p-2) } mint &operator/=(const mint a) { return (*this) *= a.inv(); } mint operator/(const mint a) const { mint res(*this); return res /= a; } bool operator==(const mint a) const { return this->x == a.x; } bool operator==(const ll a) const { return this->x == a; } // mint 入力 friend istream &operator>>(istream &is, mint &x) { is >> x.x; return is; } // mint 出力 friend ostream &operator<<(ostream &os, mint x) { os << x.x; return os; } }; /* #endregion */ /* #region Mat */ // 行列,==, !=, [] あたりは vector と一緒 template <class Num> class Mat : public vc<vc<Num>> { public: // using vc<vc<Num>>::vector; ll h, w; // コンストラクタ Mat<Num>(const ll h, ll w) : vc<vc<Num>>(h, vc<Num>(w, 0)), h(h), w(w) {} Mat<Num>(const Mat<Num> &mt) : vc<vc<Num>>(mt), h(mt.h), w(mt.w) {} Mat<Num>(std::initializer_list<vc<Num>> init) : vc<vc<Num>>() { for (auto iter = init.begin(); iter != init.end(); ++iter) this->emplace_back(*iter); h = this->size(), w = (*this)[0].size(); } // 行列に別の行列を足す Mat &operator+=(const Mat &another) { assert(this->h == another.h && this->w == another.w); REP(i, 0, this->h) REP(j, 0, this->w)(*this)[i][j] += another[i][j]; return *this; } // 行列から別の行列を引く Mat &operator-=(const Mat &another) { assert(this->h == another.h && this->w == another.w); REP(i, 0, this->h) REP(j, 0, this->w)(*this)[i][j] -= another[i][j]; return *this; } // 行列に別の行列を右から掛ける Mat &operator*=(const Mat &another) { assert(w == another.h); Mat<Num> ret(this->h, another.w); REP(i, 0, this->h) REP(j, 0, another.w) REP(k, 0, this->w) ret[i][j] += (*this)[i][k] * another[k][j]; *this = ret; return *this; } // 行列に別の行列を足す Mat operator+(const Mat &another) const { Mat<Num> ret(*this); return ret += another; } // 行列から別の行列を引く Mat operator-(const Mat &another) const { Mat<Num> ret(*this); return ret -= another; } // 行列に別の行列を右から掛ける Mat operator*(const Mat &another) const { Mat<Num> ret(*this); return ret *= another; } // 行列の n 乗を計算する Mat pow(ll n) const { assert(this->h == this->w); Mat<Num> ret(this->h, this->w); Mat<Num> a(*this); REP(i, 0, this->h) ret[i][i] = 1; while (n) { if (n & 1) ret = a * ret; a = a * a, n >>= 1; } return ret; } template <class... T> Mat assign(T... nums) { vc<Num> num_list = vc<Num>{nums...}; assert(SIZE(num_list) == this->h * this->w); REP(i, 0, this->h) REP(j, 0, this->w)(*this)[i][j] = num_list[this->w * i + j]; return *this; } void fill(Num num) { REP(i, 0, this->h) REP(j, 0, this->w)(*this)[i][j] = num; } }; /* #endregion */ // Problem void solve() { ll k, m, n; cin >> k >> m >> n; vll p(m), q(m), r(m); REP(i, 0, m) { cin >> p[i] >> q[i] >> r[i]; --p[i], --q[i], --r[i]; } using mat = Mat<mint>; ll sz = k * k; mat C(sz, sz), M(sz, 1); C.fill(0), M.fill(0); auto idx = [&k](ll s, ll t) -> ll { return k * s + t; }; REP(i, 0, m) { ll from = idx(p[i], q[i]); ll to = idx(q[i], r[i]); C[to][from] += 1; if (p[i] == 0) M[from][0] = 1; // dump(p[i], q[i], r[i], from, to); } mat CC = C.pow(n - 2); mat result = CC * M; mint ret = 0; REP(i, 0, k) ret += result[idx(i, 0)][0]; cout << ret << endl; } // entry point int main() { solve(); return 0; }