oj.uz

Submission #379133

# Submission time Handle Problem Language Result Execution time Memory
379133 2021-03-17T10:18:32 Z dannyboy20031204 Chessboard (IZhO18_chessboard) C++17
39 / 100
 53 ms 3440 KB 
#include<bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define z return 0;
using namespace std;
const int N = 1e5 + 5, inf = 1e9 + 1; //
int main(){
    ios::sync_with_stdio(0), cin.tie(0);
    int n, k;
    cin >> n >> k;
    int a[k], b[k], c[k], d[k];
    for (int i = 0; i < k; i++) cin >> a[i] >> b[i] >> c[i] >> d[i];
    ll ans = inf;
    for (int l = 1; l < n; l++){
        if (n % l) continue;
        int l2 = n / l;
        ll tmp = 1ll * l * l * (1ll * l2 * l2 / 2), tmp2 = tmp + 1ll * l * l * (l2 % 2);
        swap(tmp, tmp2);
        int d0[n + 2]{}, d1[n + 2]{}, pre[n + 1]{};
        for (int i = 1; i <= n; i++){
            pre[i] = pre[i - 1] + (i % (l * 2) > 0 and i % (l * 2) <= l);
        }
        for (int i = 0; i < k; i++){
            int p = pre[c[i]] - pre[a[i] - 1], p2 = c[i] - a[i] + 1 - p;
            d0[b[i]] += p;
            d0[d[i] + 1] -= p;
            d1[b[i]] += p2;
            d1[d[i] + 1] -= p2;
        }
        ll pre0 = 0, pre1 = 0;
        for (int i = 1; i <= n; i++){
            pre0 += d0[i], pre1 += d1[i];
            if (i % (l * 2) > 0 and i % (l * 2) <= l){
                tmp += pre1 - pre0;
                tmp2 += pre0 - pre1;
            }
            else{
                tmp2 += pre1 - pre0;
                tmp += pre0 - pre1;
            }
        }
        ans = min({ans, tmp, tmp2});
    }
    cout << ans;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 1 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 25 ms 2028 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 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 1 ms 364 KB Output is correct
5 Correct 1 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 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 1 ms 364 KB Output is correct
5 Correct 1 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 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 10 ms 1260 KB Output is correct
17 Correct 26 ms 3052 KB Output is correct
18 Correct 33 ms 3436 KB Output is correct
19 Correct 53 ms 3180 KB Output is correct
20 Correct 48 ms 3436 KB Output is correct
21 Correct 26 ms 2924 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 15 ms 1644 KB Output is correct
24 Correct 32 ms 3180 KB Output is correct
25 Correct 4 ms 620 KB Output is correct
26 Correct 19 ms 2156 KB Output is correct
27 Correct 25 ms 2668 KB Output is correct
28 Correct 30 ms 3440 KB Output is correct
29 Correct 11 ms 1388 KB Output is correct
30 Correct 1 ms 364 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 25 ms 2028 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 1 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 25 ms 2028 KB Output isn't correct
10 Halted 0 ms 0 KB -