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Submission #878824

# Submission time Handle Problem Language Result Execution time Memory
878824 2023-11-25T09:40:51 Z TahirAliyev Chessboard (IZhO18_chessboard) C++17
39 / 100
 92 ms 3528 KB 
#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define pii pair<int, int>
#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 49 ms 2504 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 1 ms 440 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 444 KB Output is correct
6 Correct 1 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 600 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 476 KB Output is correct
15 Correct 1 ms 348 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 440 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 444 KB Output is correct
6 Correct 1 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 600 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 476 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 17 ms 1492 KB Output is correct
17 Correct 54 ms 3508 KB Output is correct
18 Correct 63 ms 3308 KB Output is correct
19 Correct 87 ms 3272 KB Output is correct
20 Correct 92 ms 3264 KB Output is correct
21 Correct 48 ms 3528 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 29 ms 2068 KB Output is correct
24 Correct 63 ms 3268 KB Output is correct
25 Correct 6 ms 792 KB Output is correct
26 Correct 35 ms 1996 KB Output is correct
27 Correct 45 ms 3240 KB Output is correct
28 Correct 59 ms 3264 KB Output is correct
29 Correct 20 ms 2112 KB Output is correct
30 Correct 2 ms 348 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 49 ms 2504 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 49 ms 2504 KB Output isn't correct
10 Halted 0 ms 0 KB -