結果
問題 | No.1084 積の積 |
ユーザー | fine |
提出日時 | 2020-06-20 00:33:23 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,595 bytes |
コンパイル時間 | 1,453 ms |
コンパイル使用メモリ | 169,588 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-07-03 16:18:56 |
合計ジャッジ時間 | 2,888 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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
6,812 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 1 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | WA | - |
testcase_05 | AC | 2 ms
6,944 KB |
testcase_06 | AC | 15 ms
6,944 KB |
testcase_07 | AC | 2 ms
6,940 KB |
testcase_08 | AC | 2 ms
6,944 KB |
testcase_09 | AC | 8 ms
6,944 KB |
testcase_10 | AC | 2 ms
6,944 KB |
testcase_11 | AC | 3 ms
6,940 KB |
testcase_12 | AC | 13 ms
6,940 KB |
testcase_13 | AC | 23 ms
6,940 KB |
testcase_14 | AC | 10 ms
6,944 KB |
testcase_15 | AC | 9 ms
6,944 KB |
testcase_16 | AC | 28 ms
6,944 KB |
testcase_17 | AC | 12 ms
6,940 KB |
testcase_18 | AC | 19 ms
6,940 KB |
testcase_19 | AC | 25 ms
6,944 KB |
testcase_20 | AC | 7 ms
6,944 KB |
testcase_21 | AC | 10 ms
6,940 KB |
testcase_22 | AC | 8 ms
6,940 KB |
testcase_23 | AC | 16 ms
6,944 KB |
testcase_24 | AC | 15 ms
6,944 KB |
testcase_25 | AC | 24 ms
6,940 KB |
testcase_26 | AC | 24 ms
6,944 KB |
testcase_27 | AC | 24 ms
6,944 KB |
testcase_28 | AC | 25 ms
6,940 KB |
testcase_29 | AC | 24 ms
6,944 KB |
testcase_30 | AC | 24 ms
6,944 KB |
testcase_31 | AC | 23 ms
6,940 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; constexpr char newl = '\n'; constexpr ll LIM = 1e9; // https://noshi91.hatenablog.com/entry/2019/03/31/174006 template <std::uint_fast64_t Modulus> struct ModInt { using u64 = std::uint_fast64_t; static constexpr u64 MOD = Modulus; u64 val; constexpr ModInt(const u64 x = 0) noexcept : val(x % MOD) {} constexpr ModInt operator+() const noexcept { return ModInt(*this); } constexpr ModInt operator-() const noexcept { ModInt res(*this); if (res.val != 0) res.val = MOD - res.val; return res; } constexpr bool operator==(const ModInt& rhs) const noexcept { return val == rhs.val; } constexpr bool operator!=(const ModInt& rhs) const noexcept { return val != rhs.val; } // prefix increment/decrement constexpr ModInt& operator++() noexcept { return *this += ModInt(1); } constexpr ModInt& operator--() noexcept { return *this -= ModInt(1); } // postfix increment/decrement constexpr ModInt operator++(int) noexcept { ModInt tmp(*this); ++*this; return tmp; } constexpr ModInt operator--(int) noexcept { ModInt tmp(*this); --*this; return tmp; } constexpr ModInt operator+(const ModInt& rhs) const noexcept { return ModInt(*this) += rhs; } constexpr ModInt operator-(const ModInt& rhs) const noexcept { return ModInt(*this) -= rhs; } constexpr ModInt operator*(const ModInt& rhs) const noexcept { return ModInt(*this) *= rhs; } constexpr ModInt operator/(const ModInt& rhs) const noexcept { return ModInt(*this) /= rhs; } constexpr ModInt& operator+=(const ModInt& rhs) noexcept { val += rhs.val; if (val >= MOD) val -= MOD; return *this; } constexpr ModInt& operator-=(const ModInt& rhs) noexcept { if (val < rhs.val) val += MOD; val -= rhs.val; return *this; } constexpr ModInt& operator*=(const ModInt& rhs) noexcept { val = val * rhs.val % MOD; return *this; } // prime Modulus only constexpr ModInt& operator/=(const ModInt& rhs) noexcept { return *this *= rhs.inv(); } // prime Modulus only constexpr ModInt inv() const noexcept { return pow(*this, MOD - 2); } }; template<std::uint_fast64_t Modulus> constexpr ModInt<Modulus> pow(ModInt<Modulus> x, std::uint_fast64_t n) { ModInt<Modulus> res(1); while (n) { if (n & 1) res *= x; x *= x; n >>= 1; } return res; } template<std::uint_fast64_t Modulus> istream& operator>>(istream& is, ModInt<Modulus>& x) { std::uint_fast64_t val; is >> val; x = ModInt<Modulus>(val); return is; } template<std::uint_fast64_t Modulus> ostream& operator<<(ostream& os, const ModInt<Modulus>& x) { return os << x.val; } using mint = ModInt<1000000007>; int main() { cin.tie(nullptr); ios::sync_with_stdio(false); int n; cin >> n; vector<ll> a(n); for (int i = 0; i < n; i++) { cin >> a[i]; if (a[i] == 0) { cout << 0 << newl; return 0; } } ll sum = 1; mint sum2 = 1; mint ans = 1; for (int i = 0, j = 0; i < n; i++) { sum *= a[i]; sum2 *= pow(mint(a[i]), i - j + 1); while (j < i) { if (sum <= LIM) break; sum2 /= sum; sum /= a[j]; ++j; } ans *= sum2; } cout << ans << newl; return 0; }