Submission #490787

#	Time	Username	Problem	Language	Result	Execution time	Memory
490787		infertechno2	Chessboard (IZhO18_chessboard)	C++17	8 / 100	22 ms	3708 KiB

chessboard

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const ll Size=1e5+1;

class point2d{
public:
    ll x,y;
};

point2d top[Size],bot[Size];

void solve(){
    ll n,k;
    cin>>n>>k;
    for(ll i=0;i<k;i++){
        cin>>top[i].y>>top[i].x>>bot[i].y>>bot[i].x;
    }
    for(ll i=n/2;i>=1;i--){
        if(n%i==0 and (n/i)%2==1){
            cout<<((n/i/2)*(n/i/2+1)*i*i)*2<<endl;
            return;
        }
    }
    cout<<(n*n)/2<<endl;
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    ll t=1;
    while(t--){
        solve();
    }
    return 0;
}

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