oj.uz

Submission #880797

# Submission time Handle Problem Language Result Execution time Memory
880797 2023-11-30T05:09:29 Z dimashhh Chessboard (IZhO18_chessboard) C++17
47 / 100
 462 ms 262144 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1e5 + 12;

map<int,int> odd[N],even[N];
#define int long long
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:67:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   67 | main(){
      | ^~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9816 KB Output is correct
2 Correct 2 ms 9816 KB Output is correct
3 Correct 2 ms 9820 KB Output is correct
4 Correct 2 ms 9816 KB Output is correct
5 Correct 2 ms 9820 KB Output is correct
6 Correct 2 ms 9820 KB Output is correct
7 Correct 3 ms 9820 KB Output is correct
8 Correct 2 ms 9820 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 17608 KB Output is correct
2 Correct 8 ms 11480 KB Output is correct
3 Correct 23 ms 18732 KB Output is correct
4 Correct 14 ms 11992 KB Output is correct
5 Correct 25 ms 16840 KB Output is correct
6 Correct 17 ms 15420 KB Output is correct
7 Correct 7 ms 12000 KB Output is correct
8 Correct 17 ms 15572 KB Output is correct
9 Correct 30 ms 15424 KB Output is correct
10 Correct 21 ms 14804 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9820 KB Output is correct
2 Correct 2 ms 9820 KB Output is correct
3 Correct 2 ms 9816 KB Output is correct
4 Correct 2 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 2 ms 9816 KB Output is correct
7 Correct 3 ms 9820 KB Output is correct
8 Correct 2 ms 9820 KB Output is correct
9 Correct 2 ms 9816 KB Output is correct
10 Correct 2 ms 9816 KB Output is correct
11 Correct 2 ms 9820 KB Output is correct
12 Correct 2 ms 9652 KB Output is correct
13 Correct 2 ms 9932 KB Output is correct
14 Correct 2 ms 9820 KB Output is correct
15 Correct 3 ms 9820 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9820 KB Output is correct
2 Correct 2 ms 9820 KB Output is correct
3 Correct 2 ms 9816 KB Output is correct
4 Correct 2 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 2 ms 9816 KB Output is correct
7 Correct 3 ms 9820 KB Output is correct
8 Correct 2 ms 9820 KB Output is correct
9 Correct 2 ms 9816 KB Output is correct
10 Correct 2 ms 9816 KB Output is correct
11 Correct 2 ms 9820 KB Output is correct
12 Correct 2 ms 9652 KB Output is correct
13 Correct 2 ms 9932 KB Output is correct
14 Correct 2 ms 9820 KB Output is correct
15 Correct 3 ms 9820 KB Output is correct
16 Correct 11 ms 10972 KB Output is correct
17 Correct 22 ms 15060 KB Output is correct
18 Correct 29 ms 15824 KB Output is correct
19 Correct 71 ms 15552 KB Output is correct
20 Correct 79 ms 15264 KB Output is correct
21 Correct 21 ms 14288 KB Output is correct
22 Correct 6 ms 11100 KB Output is correct
23 Correct 21 ms 11988 KB Output is correct
24 Correct 27 ms 15828 KB Output is correct
25 Correct 6 ms 10716 KB Output is correct
26 Correct 18 ms 11992 KB Output is correct
27 Correct 24 ms 14544 KB Output is correct
28 Correct 28 ms 15060 KB Output is correct
29 Correct 11 ms 12276 KB Output is correct
30 Correct 3 ms 10076 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 17608 KB Output is correct
2 Correct 8 ms 11480 KB Output is correct
3 Correct 23 ms 18732 KB Output is correct
4 Correct 14 ms 11992 KB Output is correct
5 Correct 25 ms 16840 KB Output is correct
6 Correct 17 ms 15420 KB Output is correct
7 Correct 7 ms 12000 KB Output is correct
8 Correct 17 ms 15572 KB Output is correct
9 Correct 30 ms 15424 KB Output is correct
10 Correct 21 ms 14804 KB Output is correct
11 Correct 2 ms 9820 KB Output is correct
12 Correct 2 ms 9820 KB Output is correct
13 Correct 2 ms 9816 KB Output is correct
14 Correct 2 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 2 ms 9816 KB Output is correct
17 Correct 3 ms 9820 KB Output is correct
18 Correct 2 ms 9820 KB Output is correct
19 Correct 2 ms 9816 KB Output is correct
20 Correct 2 ms 9816 KB Output is correct
21 Correct 2 ms 9820 KB Output is correct
22 Correct 2 ms 9652 KB Output is correct
23 Correct 2 ms 9932 KB Output is correct
24 Correct 2 ms 9820 KB Output is correct
25 Correct 3 ms 9820 KB Output is correct
26 Correct 11 ms 10972 KB Output is correct
27 Correct 22 ms 15060 KB Output is correct
28 Correct 29 ms 15824 KB Output is correct
29 Correct 71 ms 15552 KB Output is correct
30 Correct 79 ms 15264 KB Output is correct
31 Correct 21 ms 14288 KB Output is correct
32 Correct 6 ms 11100 KB Output is correct
33 Correct 21 ms 11988 KB Output is correct
34 Correct 27 ms 15828 KB Output is correct
35 Correct 6 ms 10716 KB Output is correct
36 Correct 18 ms 11992 KB Output is correct
37 Correct 24 ms 14544 KB Output is correct
38 Correct 28 ms 15060 KB Output is correct
39 Correct 11 ms 12276 KB Output is correct
40 Correct 3 ms 10076 KB Output is correct
41 Correct 444 ms 227936 KB Output is correct
42 Correct 68 ms 41228 KB Output is correct
43 Correct 203 ms 115988 KB Output is correct
44 Correct 67 ms 41404 KB Output is correct
45 Correct 40 ms 22988 KB Output is correct
46 Correct 462 ms 228280 KB Output is correct
47 Correct 42 ms 22216 KB Output is correct
48 Correct 126 ms 79360 KB Output is correct
49 Correct 65 ms 40636 KB Output is correct
50 Runtime error 365 ms 262144 KB Execution killed with signal 9
51 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9816 KB Output is correct
2 Correct 2 ms 9816 KB Output is correct
3 Correct 2 ms 9820 KB Output is correct
4 Correct 2 ms 9816 KB Output is correct
5 Correct 2 ms 9820 KB Output is correct
6 Correct 2 ms 9820 KB Output is correct
7 Correct 3 ms 9820 KB Output is correct
8 Correct 2 ms 9820 KB Output is correct
9 Correct 26 ms 17608 KB Output is correct
10 Correct 8 ms 11480 KB Output is correct
11 Correct 23 ms 18732 KB Output is correct
12 Correct 14 ms 11992 KB Output is correct
13 Correct 25 ms 16840 KB Output is correct
14 Correct 17 ms 15420 KB Output is correct
15 Correct 7 ms 12000 KB Output is correct
16 Correct 17 ms 15572 KB Output is correct
17 Correct 30 ms 15424 KB Output is correct
18 Correct 21 ms 14804 KB Output is correct
19 Correct 2 ms 9820 KB Output is correct
20 Correct 2 ms 9820 KB Output is correct
21 Correct 2 ms 9816 KB Output is correct
22 Correct 2 ms 9820 KB Output is correct
23 Correct 4 ms 9820 KB Output is correct
24 Correct 2 ms 9816 KB Output is correct
25 Correct 3 ms 9820 KB Output is correct
26 Correct 2 ms 9820 KB Output is correct
27 Correct 2 ms 9816 KB Output is correct
28 Correct 2 ms 9816 KB Output is correct
29 Correct 2 ms 9820 KB Output is correct
30 Correct 2 ms 9652 KB Output is correct
31 Correct 2 ms 9932 KB Output is correct
32 Correct 2 ms 9820 KB Output is correct
33 Correct 3 ms 9820 KB Output is correct
34 Correct 11 ms 10972 KB Output is correct
35 Correct 22 ms 15060 KB Output is correct
36 Correct 29 ms 15824 KB Output is correct
37 Correct 71 ms 15552 KB Output is correct
38 Correct 79 ms 15264 KB Output is correct
39 Correct 21 ms 14288 KB Output is correct
40 Correct 6 ms 11100 KB Output is correct
41 Correct 21 ms 11988 KB Output is correct
42 Correct 27 ms 15828 KB Output is correct
43 Correct 6 ms 10716 KB Output is correct
44 Correct 18 ms 11992 KB Output is correct
45 Correct 24 ms 14544 KB Output is correct
46 Correct 28 ms 15060 KB Output is correct
47 Correct 11 ms 12276 KB Output is correct
48 Correct 3 ms 10076 KB Output is correct
49 Correct 444 ms 227936 KB Output is correct
50 Correct 68 ms 41228 KB Output is correct
51 Correct 203 ms 115988 KB Output is correct
52 Correct 67 ms 41404 KB Output is correct
53 Correct 40 ms 22988 KB Output is correct
54 Correct 462 ms 228280 KB Output is correct
55 Correct 42 ms 22216 KB Output is correct
56 Correct 126 ms 79360 KB Output is correct
57 Correct 65 ms 40636 KB Output is correct
58 Runtime error 365 ms 262144 KB Execution killed with signal 9
59 Halted 0 ms 0 KB -