結果

問題 No.886 Direct
ユーザー risujirohrisujiroh
提出日時 2019-09-13 22:45:30
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 237 ms / 4,000 ms
コード長 2,558 bytes
コンパイル時間 1,546 ms
コンパイル使用メモリ 170,464 KB
実行使用メモリ 14,896 KB
最終ジャッジ日時 2024-07-04 10:08:13
合計ジャッジ時間 4,079 ms
ジャッジサーバーID
(参考情報)
judge2 / judge1
このコードへのチャレンジ
(要ログイン)

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 1 ms
5,376 KB
testcase_08 AC 2 ms
5,376 KB
testcase_09 AC 1 ms
5,376 KB
testcase_10 AC 2 ms
5,376 KB
testcase_11 AC 2 ms
5,376 KB
testcase_12 AC 3 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 1 ms
5,376 KB
testcase_17 AC 2 ms
5,376 KB
testcase_18 AC 2 ms
5,376 KB
testcase_19 AC 2 ms
5,376 KB
testcase_20 AC 2 ms
5,376 KB
testcase_21 AC 2 ms
5,376 KB
testcase_22 AC 3 ms
5,376 KB
testcase_23 AC 26 ms
5,376 KB
testcase_24 AC 60 ms
7,168 KB
testcase_25 AC 23 ms
5,376 KB
testcase_26 AC 18 ms
5,376 KB
testcase_27 AC 115 ms
9,756 KB
testcase_28 AC 120 ms
9,856 KB
testcase_29 AC 2 ms
5,376 KB
testcase_30 AC 2 ms
5,376 KB
testcase_31 AC 234 ms
14,828 KB
testcase_32 AC 234 ms
14,848 KB
testcase_33 AC 232 ms
14,760 KB
testcase_34 AC 234 ms
14,896 KB
testcase_35 AC 237 ms
14,848 KB
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp:11:20: warning: use of 'auto' in parameter declaration only available with '-std=c++20' or '-fconcepts'
   11 |   constexpr ModInt(auto x) : v(x >= 0 ? x % P : (P - -x % P) % P) {}
      |                    ^~~~
main.cpp:38:9: warning: use of 'auto' in parameter declaration only available with '-std=c++20' or '-fconcepts'
   38 |   M pow(auto n) const {
      |         ^~~~
main.cpp:44:22: warning: use of 'auto' in parameter declaration only available with '-std=c++20' or '-fconcepts'
   44 |   friend M operator*(auto l, M r) { return M(l) *= r; }
      |                      ^~~~
main.cpp:45:22: warning: use of 'auto' in parameter declaration only available with '-std=c++20' or '-fconcepts'
   45 |   friend M operator/(auto l, M r) { return M(l) /= r; }
      |                      ^~~~
main.cpp:46:22: warning: use of 'auto' in parameter declaration only available with '-std=c++20' or '-fconcepts'
   46 |   friend M operator+(auto l, M r) { return M(l) += r; }
      |                      ^~~~
main.cpp:47:22: warning: use of 'auto' in parameter declaration only available with '-std=c++20' or '-fconcepts'
   47 |   friend M operator-(auto l, M r) { return M(l) -= r; }
      |                      ^~~~
main.cpp:50:26: warning: use of 'auto' in parameter declaration only available with '-std=c++20' or '-fconcepts'
   50 |   friend bool operator==(auto l, M r) { return M(l) == r; }
      |                          ^~~~
main.cpp:51:26: warning: use of 'auto' in parameter declaration only available with '-std=c++20' or '-fconcepts'
   51 |   friend bool operator!=(auto l, M r) { return !(l == r); }
      |                          ^~~~

ソースコード

diff #
プレゼンテーションモードにする

#include <bits/stdc++.h>
using namespace std;
using lint = long long;
template<class T = int> using V = vector<T>;
template<class T = int> using VV = V< V<T> >;
template<unsigned P> struct ModInt {
using M = ModInt;
unsigned v;
constexpr ModInt() : v(0) {}
constexpr ModInt(auto x) : v(x >= 0 ? x % P : (P - -x % P) % P) {}
constexpr ModInt(unsigned v, int) : v(v) {}
static constexpr unsigned p() { return P; }
M operator+() const { return *this; }
M operator-() const { return {v ? P - v : 0, 0}; }
explicit operator bool() const noexcept { return v; }
bool operator!() const noexcept { return !(bool)*this; }
M operator*(M r) const { return M(*this) *= r; }
M operator/(M r) const { return M(*this) /= r; }
M operator+(M r) const { return M(*this) += r; }
M operator-(M r) const { return M(*this) -= r; }
bool operator==(M r) const { return v == r.v; }
bool operator!=(M r) const { return !(*this == r); }
M& operator*=(M r) { v = (uint64_t)v * r.v % P; return *this; }
M& operator/=(M r) { return *this *= r.inv(); }
M& operator+=(M r) { if ((v += r.v) >= P) v -= P; return *this; }
M& operator-=(M r) { if ((v += P - r.v) >= P) v -= P; return *this; }
M inv() const {
int a = v, b = P, x = 1, u = 0;
while (b) {
int q = a / b;
swap(a -= q * b, b);
swap(x -= q * u, u);
}
assert(a == 1);
return x;
}
M pow(auto n) const {
if (n < 0) return pow(-n).inv();
M res = 1;
for (M a = *this; n; a *= a, n >>= 1) if (n & 1) res *= a;
return res;
}
friend M operator*(auto l, M r) { return M(l) *= r; }
friend M operator/(auto l, M r) { return M(l) /= r; }
friend M operator+(auto l, M r) { return M(l) += r; }
friend M operator-(auto l, M r) { return M(l) -= r; }
friend ostream& operator<<(ostream& os, M r) { return os << r.v; }
friend istream& operator>>(istream& is, M& r) { lint x; is >> x; r = x; return is; }
friend bool operator==(auto l, M r) { return M(l) == r; }
friend bool operator!=(auto l, M r) { return !(l == r); }
};
using Mint = ModInt<(unsigned)1e9 + 7>;
int main() {
cin.tie(nullptr); ios::sync_with_stdio(false);
lint h, w; cin >> h >> w;
V<Mint> dp(min(h, w));
for (lint d = min(h, w) - 1; d; --d) {
lint x = (w - 1) / d, y = (h - 1) / d;
dp[d] = Mint(w * x - d * x * (x + 1) / 2) * Mint(h * y - d * y * (y + 1) / 2);
for (int m = 2 * d; m < min(h, w); m += d) {
dp[d] -= dp[m];
}
}
Mint res = h * (w - 1) + w * (h - 1);
if (1 < min(h, w)) res += 2 * dp[1];
cout << res << '\n';
}
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