結果
問題 | No.1489 Repeat Cumulative Sum |
ユーザー | m_tsubasa |
提出日時 | 2021-04-23 22:48:53 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 140 ms / 2,000 ms |
コード長 | 3,586 bytes |
コンパイル時間 | 2,095 ms |
コンパイル使用メモリ | 206,068 KB |
実行使用メモリ | 62,208 KB |
最終ジャッジ日時 | 2024-07-04 08:31:34 |
合計ジャッジ時間 | 7,050 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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 | 87 ms
61,824 KB |
testcase_01 | AC | 87 ms
61,768 KB |
testcase_02 | AC | 86 ms
61,792 KB |
testcase_03 | AC | 128 ms
62,080 KB |
testcase_04 | AC | 125 ms
62,168 KB |
testcase_05 | AC | 128 ms
62,080 KB |
testcase_06 | AC | 120 ms
62,080 KB |
testcase_07 | AC | 109 ms
61,952 KB |
testcase_08 | AC | 102 ms
61,892 KB |
testcase_09 | AC | 136 ms
62,148 KB |
testcase_10 | AC | 127 ms
62,152 KB |
testcase_11 | AC | 119 ms
62,016 KB |
testcase_12 | AC | 89 ms
61,948 KB |
testcase_13 | AC | 118 ms
62,080 KB |
testcase_14 | AC | 138 ms
62,208 KB |
testcase_15 | AC | 137 ms
62,128 KB |
testcase_16 | AC | 112 ms
61,948 KB |
testcase_17 | AC | 116 ms
62,068 KB |
testcase_18 | AC | 109 ms
62,044 KB |
testcase_19 | AC | 101 ms
61,952 KB |
testcase_20 | AC | 104 ms
61,952 KB |
testcase_21 | AC | 121 ms
62,072 KB |
testcase_22 | AC | 89 ms
61,792 KB |
testcase_23 | AC | 96 ms
61,928 KB |
testcase_24 | AC | 88 ms
61,760 KB |
testcase_25 | AC | 94 ms
61,824 KB |
testcase_26 | AC | 140 ms
62,208 KB |
testcase_27 | AC | 118 ms
62,052 KB |
testcase_28 | AC | 90 ms
61,952 KB |
testcase_29 | AC | 109 ms
61,956 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; template <int mod = (int)(1e9 + 7)> struct ModInt { int x; ModInt() : x(0) {} ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} ModInt &operator+=(const ModInt &p) { if ((x += p.x) >= mod) x -= mod; return *this; } ModInt &operator-=(const ModInt &p) { if ((x += mod - p.x) >= mod) x -= mod; return *this; } ModInt &operator*=(const ModInt &p) { x = (int)(1LL * x * p.x % mod); return *this; } ModInt &operator/=(const ModInt &p) { *this *= p.inverse(); return *this; } ModInt operator-() const { return ModInt(-x); } ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; } ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; } ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; } ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; } bool operator==(const ModInt &p) const { return x == p.x; } bool operator!=(const ModInt &p) const { return x != p.x; } ModInt inverse() const { int a = x, b = mod, u = 1, v = 0, t; while (b > 0) { t = a / b; swap(a -= t * b, b); swap(u -= t * v, v); } return ModInt(u); } ModInt pow(int64_t n) const { ModInt res(1), mul(x); while (n) { if (n & 1) res *= mul; mul *= mul; n >>= 1; } return res; } friend ostream &operator<<(ostream &os, const ModInt &p) { return os << p.x; } friend istream &operator>>(istream &is, ModInt &a) { int64_t t; is >> t; a = ModInt<mod>(t); return (is); } static int get_mod() { return mod; } }; struct Combination { vector<ModInt<>> _fact, _rfact, _inv; Combination(long long nsize = 5000000) : _fact(nsize + 1), _rfact(nsize + 1), _inv(nsize + 1) { _fact[0] = _rfact[nsize] = _inv[0] = 1; for (int i = 1; i <= nsize; i++) _fact[i] = _fact[i - 1] * i; _rfact[nsize] /= _fact[nsize]; for (int i = nsize - 1; i >= 0; i--) _rfact[i] = _rfact[i + 1] * (i + 1); for (int i = 1; i <= nsize; i++) _inv[i] = _rfact[i] * _fact[i - 1]; } inline ModInt<> fact(int k) const { return _fact[k]; } inline ModInt<> rfact(int k) const { return _rfact[k]; } inline ModInt<> inv(int k) const { return _inv[k]; } ModInt<> P(int n, int r) const { if (r < 0 || n < r) return 0; return fact(n) * rfact(n - r); } ModInt<> C(int p, int q) const { if (q < 0 || p < q) return 0; return fact(p) * rfact(q) * rfact(p - q); } ModInt<> largeC(long long p, long long q) const { if (q < 0 || p < q) return 0; if (q >= (long long)_fact.size()) q = p - q; // if (q >= (long long)5000) q = p - q; ModInt<> res = rfact(q); for (int i = 0; i < q; ++i) res *= p - i; return res; } // n types,choose r ModInt<> H(int n, int r) const { if (n < 0 || r < 0) return (0); return r == 0 ? 1 : C(n + r - 1, r); } ModInt<> largeH(long long n, long long r) const { if (n < 0 || r < 0) return (0); return r == 0 ? 1 : largeC(n + r - 1, r); } ModInt<> Catalan(int n) { // C(2n,n) / (n + 1) return fact(2 * n) * rfact(n + 1) * rfact(n); } }; using mint = ModInt<>; long long n, m; vector<mint> a; Combination com; mint solve(); int main() { cin >> n >> m, --n; a.resize(n); for (auto &p : a) cin >> p; cout << solve() << endl; return 0; } mint solve() { mint res = 0, now = 1; reverse(a.begin(), a.end()); for (int i = 0; i < n; ++i) { now *= i + m; now /= i + 1; res += now * a[i]; } return res; }