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Submission #338390

# Submission time Handle Problem Language Result Execution time Memory
338390 2020-12-23T04:58:37 Z BY_KUTBILIM Chessboard (IZhO18_chessboard) C++14
8 / 100
 23 ms 364 KB 
/** @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;
        ll cnt[2];
        cnt[0] = cnt[1] = 0;
        for(int i = 0; i < k; i++){
            cin >> x1 >> y1 >> x2 >> y2;
            cnt[(x1 + y1) % 2] += 1ll;
        }
        cout << min((n * 1ll * n) / 2ll - cnt[0] + cnt[1], (n * 1ll * n) / 2ll - cnt[1] + cnt[0]);
    }

    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Incorrect 23 ms 364 KB Output isn't correct
10 Halted 0 ms 0 KB -