제출 #897823

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
897823	2024-01-03 18:14:11	DAleksa	Chessboard (IZhO18_chessboard)	C++17	100 / 100	637 ms	4512 KiB

chessboard

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#include <bits/stdc++.h>
using namespace std;
const int K = 1e5 + 10, SQ = 700;
int n, k;
int x1[K], Y1[K], x2[K], y2[K];
vector<int> divs;
long long sum[SQ], P;
long long get(int x, int y, int k) {
    if(x == 0 || y == 0) {
        return 0;
    }
    int X = (x / k) * k, Y = (y / k) * k;
    long long ans = ((X / k) * 1LL * (Y / k) + 1) / 2 * k * k;
//    cout << k << "\n";
//    cout << x << " " << y << "\n";
//    cout << X << " " << Y << "\n";
//    cout << ans << "\n";
    ans += (x - X) * 1LL * k * (((Y / k) + ((X / k) % 2 == 0)) / 2);
//    cout << ans << "\n";
    ans += (y - Y) * 1LL * k * (((X / k) + ((Y / k) % 2 == 0)) / 2);
//    cout << ans << "\n";
    if((X / k + Y / k) % 2 == 0) {
        ans += (x - X) * 1LL * (y - Y);
    }
    return ans;
}
 
 
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컴파일 시 표준 에러 (stderr) 메시지

chessboard.cpp: In function 'int main()':
chessboard.cpp:55:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |         for(int d = 0; d < divs.size(); d++) {
      |                        ~~^~~~~~~~~~~~~
chessboard.cpp:62:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |     for(int i = 0; i < divs.size(); i++) {
      |                    ~~^~~~~~~~~~~~~

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