Submission #379707

#	Time	Username	Problem	Language	Result	Execution time	Memory
379707		Kalashnikov	Chessboard (IZhO18_chessboard)	C++17	8 / 100	1 ms	492 KiB

chessboard

#include <bits/stdc++.h>
 
#define ios ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
#define all(a) a.begin() , a.end()
#define F first
#define S second
 
using namespace std;
using ll = long long;
 
const int N = 2e5+5 , inf = 2e9 + 7;
const ll INF = 1e18 ,   mod = 1e9+7 , P = 6547;

void solve() {
	ll n, k;
	cin >> n >> k;
	if(k == 0) {
		ll ans = n*n / 2;
		for(int i = 2; i < n; i ++) {
			if(n%i == 0) {
				int x = i;
				if((n/x) % 2) {
					ans = min(ans , (n/x) * (n/x) / 2 * x*x);
				}
			}
		}
		cout << ans;
		return;
	}
}
/*
*/
main() {
    ios;
    int tt = 1;
    //cin >> tt;
    while(tt --) {
        solve();
    }
    return 0;
}

Compilation message (stderr)

chessboard.cpp:34:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   34 | main() {
      |      ^

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