Submission #338378

#	Time	Username	Problem	Language	Result	Execution time	Memory
338378		BY_KUTBILIM	Chessboard (IZhO18_chessboard)	C++14	8 / 100	1 ms	364 KiB

chessboard

/** @BY_KUTBILIM **/
#include <bits/stdc++.h>
using namespace std;

#define ff first
#define ss second
#define pb push_back
#define ll long long
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).end()

const int inf = (int)1e9+7;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie();

    int n, k;
    cin >> n >> k;
    if(k == 0){
        int ans = n * n;
        for(int i = 1; i <= n / 2; i++){
            if(n % i != 0)continue;
            int cur = 0;
            for(int I = 0; I < n; I += i){
                for(int J = ((I / i) % 2 ? i : 0); J < n; J += i*2){
                    cur += (i * i);
                }
            }
            ans = min({ans, cur, n * n - cur});
        }
        cout << ans;
    } else{
        int x1, y1, x2, y2;
        cout << (n * 1ll * n) / 2 - 1;
    }

    return 0;
}

Compilation message (stderr)

chessboard.cpp: In function 'int main()':
chessboard.cpp:34:13: warning: unused variable 'x1' [-Wunused-variable]
   34 |         int x1, y1, x2, y2;
      |             ^~
chessboard.cpp:34:17: warning: unused variable 'y1' [-Wunused-variable]
   34 |         int x1, y1, x2, y2;
      |                 ^~
chessboard.cpp:34:21: warning: unused variable 'x2' [-Wunused-variable]
   34 |         int x1, y1, x2, y2;
      |                     ^~
chessboard.cpp:34:25: warning: unused variable 'y2' [-Wunused-variable]
   34 |         int x1, y1, x2, y2;
      |                         ^~

• Subtask 1: 8 / 8
• Subtask 2: 0 / 8
• Subtask 3: 0 / 15
• Subtask 4: 0 / 16
• Subtask 5: 0 / 23
• Subtask 6: 0 / 30