oj.uz

Submission #880796

# Submission time Handle Problem Language Result Execution time Memory
880796 2023-11-30T05:08:11 Z dimashhh Chessboard (IZhO18_chessboard) C++17
47 / 100
 210 ms 262144 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1e6 + 12;
#define int long long
map<int,int> odd[N],even[N];
ll col_eq(int k,int x,int y,int x1,int y1){
    int ret = 0;
    for(int i = x;i <= x1;i++){
        for(int j = y;j <= y1;j++){
            if(((i + k - 1) / k) % 2 == ((j + k - 1) / k) % 2){
                ret++;
            }
        }
    }
    // ll ret = (odd[x1][k] - odd[x - 1][k]) * (odd[y1][k] - odd[y - 1][k]);
    // ret += (even[x1][k] - even[x - 1][k]) *1ll* (even[y1][k] - even[y - 1][k]);
    return ret;
}
ll col_non_eq(int k,int x,int y,int x1,int y1){
    return (x1 - x + 1) *1ll* (y1 - y + 1) - col_eq(k,x,y,x1,y1);
}
vector<pair<pair<int,int>,pair<int,int>>> a;
ll n,k;
int get(ll del){
    ll res1 = 0,res2 = 0;
    for(auto [x,y]:a){
        res1 += col_eq(del,x.first,x.second,y.first,y.second);
        res2 += col_non_eq(del,x.first,x.second,y.first,y.second);
    }
    ll x = res1;
    res1 = ((n * n / del / del) + 1) / 2 * (del * del) - res1 + res2;
    res2 = ((n * n / del / del)) / 2 * (del * del) + x - res2;
    // cout << ((n * n / del / del) + 1) / 2 * del * del - res2 << '\n';
    return min(res1,res2);
}
void test(){
    cin >> n >> k;
    for(int i = 1;i <= k;i++){
        int x,y,x1,y1;
        cin >> x >> y >> x1 >> y1;
        a.push_back({{x,y},{x1,y1}});
    }
    ll res = 1e10;
    for(int i = 1;i < n;i++){
        if(n % i == 0){
            for(int j = 1;j <= n;j++){
                int x = (j + i - 1) / i;
                odd[j][i] = odd[j - 1][i];
                even[j][i] = even[j - 1][i];
                if(x & 1){
                    odd[j][i]++;
                }else{
                    even[j][i]++;
                }
            }
        }
    }
    for(int i = 1;i < n;i++){
        if(n % i == 0){
            res = min(res,1ll*get(i));
        }
    }
    cout << res;
}
main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    test();
}

Compilation message

chessboard.cpp:66:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   66 | main(){
      | ^~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 94300 KB Output is correct
2 Correct 19 ms 94300 KB Output is correct
3 Correct 18 ms 94300 KB Output is correct
4 Correct 20 ms 94216 KB Output is correct
5 Correct 19 ms 94204 KB Output is correct
6 Correct 19 ms 94300 KB Output is correct
7 Correct 19 ms 94300 KB Output is correct
8 Correct 22 ms 94300 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 103880 KB Output is correct
2 Correct 25 ms 96472 KB Output is correct
3 Correct 43 ms 105896 KB Output is correct
4 Correct 30 ms 96472 KB Output is correct
5 Correct 41 ms 103124 KB Output is correct
6 Correct 36 ms 101320 KB Output is correct
7 Correct 25 ms 97348 KB Output is correct
8 Correct 39 ms 101580 KB Output is correct
9 Correct 47 ms 102148 KB Output is correct
10 Correct 37 ms 100564 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 94292 KB Output is correct
2 Correct 19 ms 94300 KB Output is correct
3 Correct 19 ms 94384 KB Output is correct
4 Correct 20 ms 94296 KB Output is correct
5 Correct 18 ms 94300 KB Output is correct
6 Correct 19 ms 94300 KB Output is correct
7 Correct 19 ms 94304 KB Output is correct
8 Correct 19 ms 94300 KB Output is correct
9 Correct 18 ms 94300 KB Output is correct
10 Correct 19 ms 94300 KB Output is correct
11 Correct 19 ms 94296 KB Output is correct
12 Correct 19 ms 94296 KB Output is correct
13 Correct 20 ms 94296 KB Output is correct
14 Correct 19 ms 94300 KB Output is correct
15 Correct 19 ms 94300 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 94292 KB Output is correct
2 Correct 19 ms 94300 KB Output is correct
3 Correct 19 ms 94384 KB Output is correct
4 Correct 20 ms 94296 KB Output is correct
5 Correct 18 ms 94300 KB Output is correct
6 Correct 19 ms 94300 KB Output is correct
7 Correct 19 ms 94304 KB Output is correct
8 Correct 19 ms 94300 KB Output is correct
9 Correct 18 ms 94300 KB Output is correct
10 Correct 19 ms 94300 KB Output is correct
11 Correct 19 ms 94296 KB Output is correct
12 Correct 19 ms 94296 KB Output is correct
13 Correct 20 ms 94296 KB Output is correct
14 Correct 19 ms 94300 KB Output is correct
15 Correct 19 ms 94300 KB Output is correct
16 Correct 26 ms 95452 KB Output is correct
17 Correct 38 ms 99900 KB Output is correct
18 Correct 45 ms 98504 KB Output is correct
19 Correct 92 ms 101316 KB Output is correct
20 Correct 99 ms 100552 KB Output is correct
21 Correct 38 ms 100620 KB Output is correct
22 Correct 23 ms 96148 KB Output is correct
23 Correct 38 ms 96516 KB Output is correct
24 Correct 44 ms 100128 KB Output is correct
25 Correct 23 ms 95448 KB Output is correct
26 Correct 35 ms 96472 KB Output is correct
27 Correct 47 ms 98764 KB Output is correct
28 Correct 46 ms 100300 KB Output is correct
29 Correct 27 ms 96464 KB Output is correct
30 Correct 20 ms 94808 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 103880 KB Output is correct
2 Correct 25 ms 96472 KB Output is correct
3 Correct 43 ms 105896 KB Output is correct
4 Correct 30 ms 96472 KB Output is correct
5 Correct 41 ms 103124 KB Output is correct
6 Correct 36 ms 101320 KB Output is correct
7 Correct 25 ms 97348 KB Output is correct
8 Correct 39 ms 101580 KB Output is correct
9 Correct 47 ms 102148 KB Output is correct
10 Correct 37 ms 100564 KB Output is correct
11 Correct 22 ms 94292 KB Output is correct
12 Correct 19 ms 94300 KB Output is correct
13 Correct 19 ms 94384 KB Output is correct
14 Correct 20 ms 94296 KB Output is correct
15 Correct 18 ms 94300 KB Output is correct
16 Correct 19 ms 94300 KB Output is correct
17 Correct 19 ms 94304 KB Output is correct
18 Correct 19 ms 94300 KB Output is correct
19 Correct 18 ms 94300 KB Output is correct
20 Correct 19 ms 94300 KB Output is correct
21 Correct 19 ms 94296 KB Output is correct
22 Correct 19 ms 94296 KB Output is correct
23 Correct 20 ms 94296 KB Output is correct
24 Correct 19 ms 94300 KB Output is correct
25 Correct 19 ms 94300 KB Output is correct
26 Correct 26 ms 95452 KB Output is correct
27 Correct 38 ms 99900 KB Output is correct
28 Correct 45 ms 98504 KB Output is correct
29 Correct 92 ms 101316 KB Output is correct
30 Correct 99 ms 100552 KB Output is correct
31 Correct 38 ms 100620 KB Output is correct
32 Correct 23 ms 96148 KB Output is correct
33 Correct 38 ms 96516 KB Output is correct
34 Correct 44 ms 100128 KB Output is correct
35 Correct 23 ms 95448 KB Output is correct
36 Correct 35 ms 96472 KB Output is correct
37 Correct 47 ms 98764 KB Output is correct
38 Correct 46 ms 100300 KB Output is correct
39 Correct 27 ms 96464 KB Output is correct
40 Correct 20 ms 94808 KB Output is correct
41 Runtime error 210 ms 262144 KB Execution killed with signal 9
42 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 94300 KB Output is correct
2 Correct 19 ms 94300 KB Output is correct
3 Correct 18 ms 94300 KB Output is correct
4 Correct 20 ms 94216 KB Output is correct
5 Correct 19 ms 94204 KB Output is correct
6 Correct 19 ms 94300 KB Output is correct
7 Correct 19 ms 94300 KB Output is correct
8 Correct 22 ms 94300 KB Output is correct
9 Correct 44 ms 103880 KB Output is correct
10 Correct 25 ms 96472 KB Output is correct
11 Correct 43 ms 105896 KB Output is correct
12 Correct 30 ms 96472 KB Output is correct
13 Correct 41 ms 103124 KB Output is correct
14 Correct 36 ms 101320 KB Output is correct
15 Correct 25 ms 97348 KB Output is correct
16 Correct 39 ms 101580 KB Output is correct
17 Correct 47 ms 102148 KB Output is correct
18 Correct 37 ms 100564 KB Output is correct
19 Correct 22 ms 94292 KB Output is correct
20 Correct 19 ms 94300 KB Output is correct
21 Correct 19 ms 94384 KB Output is correct
22 Correct 20 ms 94296 KB Output is correct
23 Correct 18 ms 94300 KB Output is correct
24 Correct 19 ms 94300 KB Output is correct
25 Correct 19 ms 94304 KB Output is correct
26 Correct 19 ms 94300 KB Output is correct
27 Correct 18 ms 94300 KB Output is correct
28 Correct 19 ms 94300 KB Output is correct
29 Correct 19 ms 94296 KB Output is correct
30 Correct 19 ms 94296 KB Output is correct
31 Correct 20 ms 94296 KB Output is correct
32 Correct 19 ms 94300 KB Output is correct
33 Correct 19 ms 94300 KB Output is correct
34 Correct 26 ms 95452 KB Output is correct
35 Correct 38 ms 99900 KB Output is correct
36 Correct 45 ms 98504 KB Output is correct
37 Correct 92 ms 101316 KB Output is correct
38 Correct 99 ms 100552 KB Output is correct
39 Correct 38 ms 100620 KB Output is correct
40 Correct 23 ms 96148 KB Output is correct
41 Correct 38 ms 96516 KB Output is correct
42 Correct 44 ms 100128 KB Output is correct
43 Correct 23 ms 95448 KB Output is correct
44 Correct 35 ms 96472 KB Output is correct
45 Correct 47 ms 98764 KB Output is correct
46 Correct 46 ms 100300 KB Output is correct
47 Correct 27 ms 96464 KB Output is correct
48 Correct 20 ms 94808 KB Output is correct
49 Runtime error 210 ms 262144 KB Execution killed with signal 9
50 Halted 0 ms 0 KB -