結果
問題 | No.891 隣接3項間の漸化式 |
ユーザー | Forested |
提出日時 | 2020-10-15 22:44:02 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 3 ms / 2,000 ms |
コード長 | 5,719 bytes |
コンパイル時間 | 2,266 ms |
コンパイル使用メモリ | 202,892 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-07-20 20:03:49 |
合計ジャッジ時間 | 3,852 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 3 ms
5,376 KB |
testcase_08 | AC | 3 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 2 ms
5,376 KB |
testcase_16 | AC | 2 ms
5,376 KB |
testcase_17 | AC | 2 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 3 ms
5,376 KB |
testcase_20 | AC | 2 ms
5,376 KB |
testcase_21 | AC | 2 ms
5,376 KB |
testcase_22 | AC | 2 ms
5,376 KB |
testcase_23 | AC | 2 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 2 ms
5,376 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 2 ms
5,376 KB |
testcase_29 | AC | 2 ms
5,376 KB |
testcase_30 | AC | 2 ms
5,376 KB |
testcase_31 | AC | 2 ms
5,376 KB |
testcase_32 | AC | 2 ms
5,376 KB |
testcase_33 | AC | 2 ms
5,376 KB |
testcase_34 | AC | 2 ms
5,376 KB |
testcase_35 | AC | 2 ms
5,376 KB |
testcase_36 | AC | 2 ms
5,376 KB |
testcase_37 | AC | 2 ms
5,376 KB |
testcase_38 | AC | 2 ms
5,376 KB |
testcase_39 | AC | 2 ms
5,376 KB |
testcase_40 | AC | 2 ms
5,376 KB |
testcase_41 | AC | 2 ms
5,376 KB |
ソースコード
// Template #define FORESTED #include "bits/stdc++.h" #define rep_override(x, y, z, name, ...) name #define rep2(i, n) for (int i = 0; i < (int)(n); ++i) #define rep3(i, l, r) for (int i = (int)(l); i < (int)(r); ++i) #define rep(...) rep_override(__VA_ARGS__, rep3, rep2)(__VA_ARGS__) #define per(i, n) for (ll i = (ll)(n) - 1; i >= 0; --i) #define all(x) (x).begin(), (x).end() using namespace std; using ll = long long; constexpr int inf = 1001001001; constexpr ll INF = 3003003003003003003LL; template <typename T> inline bool chmin(T &x, const T &y) { if (x > y) { x = y; return true; } return false; } template <typename T> inline bool chmax(T &x, const T &y) { if (x < y) { x = y; return true; } return false; } struct IOSET { IOSET() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(10); } } ioset; template <typename T> istream &operator>>(istream &is, vector<T> &vec) { for (T &element : vec) is >> element; return is; } template <typename T> vector<T> operator--(vector<T> &vec) { for (T &element : vec) --element; return vec; } // Mod-Int #ifndef FORESTED #include "template.cpp" #endif #define MOD_INT template <int MOD> struct ModInt { static_assert(MOD >= 1); long long val; ModInt() = default; ModInt(long long x) : val(x % MOD + (x < 0 ? MOD : 0)) {} ModInt<MOD> &operator+= (const ModInt<MOD> &x) { if ((val += x.val) >= MOD) val -= MOD; return *this; } ModInt<MOD> &operator-= (const ModInt<MOD> &x) { if ((val -= x.val) < 0) val += MOD; return *this; } ModInt<MOD> &operator*= (const ModInt<MOD> &x) { (val *= x.val) %= MOD; return *this; } ModInt<MOD> operator+ (const ModInt<MOD> &x) const { return ModInt(*this) += x; } ModInt<MOD> operator- (const ModInt<MOD> &x) const { return ModInt(*this) -= x; } ModInt<MOD> operator* (const ModInt<MOD> &x) const { return ModInt(*this) *= x; } ModInt<MOD> pow(long long t) const { assert(t >= 0); ModInt<MOD> res(1), now(*this); while (t) { if (t & 1) res *= now; now *= now; t >>= 1; } return res; } ModInt<MOD> inv() const { return pow(MOD - 2); } ModInt<MOD> &operator/= (const ModInt<MOD> &x) { return *this *= x.pow(MOD - 2); } ModInt<MOD> operator/ (const ModInt<MOD> &x) const { return ModInt(*this) /= x; } friend std::istream &operator>> (std::istream &is, ModInt<MOD> &x) { long long a; is >> a; x = ModInt<MOD>(a); return is; } friend std::ostream &operator<< (std::ostream &os, const ModInt<MOD> &x) { os << x.val; return os; } }; constexpr int mod = 1000000007; using mint = ModInt<mod>; // Square Matrix #ifndef FORESTED #include "template.cpp" #endif #define SQUARE_MATRIX template <typename T, int N> class SquareMatrix { static_assert(N >= 0); std::array<std::array<T, N>, N> arr; public: const std::array<T, N> &operator[](int x) const { assert(x >= 0 && x < N); return arr[x]; } std::array<T, N> &operator[](int x) { assert(x >= 0 && x < N); return arr[x]; } static SquareMatrix identity() { SquareMatrix<T, N> s; for (int i = 0; i < N; ++i) { for (int j = 0; j < N; ++j) { if (i == j) { s.arr[i][j] = T(1); } else { s.arr[i][j] = T(0); } } } return s; } SquareMatrix &operator+=(const SquareMatrix<T, N> &x) { for (int i = 0; i < N; ++i) { for (int j = 0; j < N; ++j) { arr[i][j] += x.arr[i][j]; } } return *this; } SquareMatrix &operator-=(const SquareMatrix<T, N> &x) { for (int i = 0; i < N; ++i) { for (int j = 0; j < N; ++j) { arr[i][j] -= x.arr[i][j]; } } return *this; } SquareMatrix &operator*=(const SquareMatrix<T, N> &x) { std::array<std::array<T, N>, N> res; for (int i = 0; i < N; ++i) { for (int j = 0; j < N; ++j) { res[i][j] = T(0); } } for (int i = 0; i < N; ++i) { for (int j = 0; j < N; ++j) { for (int k = 0; k < N; ++k) { res[i][j] += arr[i][k] * x.arr[k][j]; } } } arr.swap(res); return *this; } SquareMatrix operator+(const SquareMatrix<T, N> &x) const { return SquareMatrix(*this) += x; } SquareMatrix operator-(const SquareMatrix<T, N> &x) const { return SquareMatrix(*this) -= x; } SquareMatrix operator*(const SquareMatrix<T, N> &x) { return SquareMatrix(*this) *= x; } SquareMatrix pow(long long x) const { assert(x >= 0); SquareMatrix<T, N> a(*this); SquareMatrix<T, N> b = SquareMatrix<T, N>::identity(); while (x) { if (x & 1) { b *= a; } a *= a; x >>= 1; } return b; } }; // Main int main() { int a, b, n; cin >> a >> b >> n; SquareMatrix<mint, 2> s; s[0][0] = mint(a); s[0][1] = mint(b); s[1][0] = mint(1); s[1][1] = mint(0); auto t = s.pow(n); cout << t[1][0] << "\n"; }