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Submission #878825

# Submission time Handle Problem Language Result Execution time Memory
878825 2023-11-25T09:42:26 Z TahirAliyev Chessboard (IZhO18_chessboard) C++17
39 / 100
 91 ms 3016 KB 
#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define pii pair<ll, ll>
#define oo 1e9
#define int ll


int n, k;
const int MAX = 1e5 + 5;
vector<pii> black;

vector<int> s;

void solve(){
    cin >> n >> k;
    for(int i = 1; i <= k; i++){
        int a, b; cin >> a >> b >> a >> b;
        black.push_back({a, b});
    }
    s.push_back(1);
    for(int d = 2; d * d <= n; d++){
        if(n % d == 0){
            s.push_back(d);
            if(n / d != d){
                s.push_back(n / d);
            }
        }
    }
    int ans = oo;
    for(int a : s){
        int tmp1 = ((n / a) * (n / a) + 1) / 2 * a * a;
        int tmp2 = ((n / a) * (n / a)) / 2 * a * a;
        for(pii b : black){
            int x = (b.first - 1) / a + 1;
            int y = (b.second - 1) / a + 1;
            if(x % 2 == y % 2){
                tmp1--;
                tmp2++;
            }
            else{
                tmp1++;
                tmp2--;
            }
        }
        ans = min(tmp1, ans);
        ans = min(tmp2, ans);
    }
    cout << ans << '\n';
}

signed main(){
    int t = 1;
    while(t--){
        solve();
    }
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 51 ms 1460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 17 ms 984 KB Output is correct
17 Correct 49 ms 2504 KB Output is correct
18 Correct 60 ms 2500 KB Output is correct
19 Correct 87 ms 3016 KB Output is correct
20 Correct 91 ms 2508 KB Output is correct
21 Correct 47 ms 2500 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 28 ms 1492 KB Output is correct
24 Correct 55 ms 2504 KB Output is correct
25 Correct 6 ms 604 KB Output is correct
26 Correct 45 ms 1532 KB Output is correct
27 Correct 49 ms 2500 KB Output is correct
28 Correct 57 ms 2512 KB Output is correct
29 Correct 19 ms 1480 KB Output is correct
30 Correct 2 ms 344 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 51 ms 1460 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 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Incorrect 51 ms 1460 KB Output isn't correct
10 Halted 0 ms 0 KB -