Submission #645652

#	Time	Username	Problem	Language	Result	Execution time	Memory
645652		Smailik_	Chessboard (IZhO18_chessboard)	C++17	0 / 100	18 ms	1160 KiB

chessboard

#include <bits/stdc++.h>
 
#define ll long long int
#define pb push_back
#define ui unsigned int
#define ld long double
#define pl pair<long long int, long long int>
#define boost ios_base::sync_with_stdio(NULL);cin.tie(0);cout.tie(0);
#define ff first
#define ss second
 
using namespace std;
 
const ll maxn = 1e6 + 101;
// const ll inf = 1e17 + 9;
// const ll mod = 1e9 + 7;
// const double eps = 1e-10;
// const ll num = 4294967295;
 
ll p[maxn];
 
void solve()
{
    ll n, k;
 
    cin >> n >> k;
 
    ll ans = n * n / 2, ans2 = n * n / 2;
    for(ll i = 1; i <= k; i++){
        ll x1, y1, x2, y2;
        cin >> x1 >> y1 >> x2 >> y2;
        if((x1 % 2) + (y1 % 2) == 1){
            ans--;
            ans2++;
        }
        else{
            ans2--;
            ans++;
        }
    }

    cout << min(ans, ans2);

}
 
int main()
{
    boost;
 
    ll tt = 1;
 
    //cin >> tt;
 
    for(ll i = 1; i <= tt; i++)
    {
        //cout << "Case " << i << ":\n";
        solve();
    }
}  

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