oj.uz

Submission #880804

# Submission time Handle Problem Language Result Execution time Memory
880804 2023-11-30T05:17:59 Z dimashhh Chessboard (IZhO18_chessboard) C++17
70 / 100
 804 ms 162756 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1e5 + 1;

#define int long long
int odd[N][101],even[N][101],it = 0;
ll col_eq(int k,int x,int y,int x1,int y1){
    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 i){
    ll res1 = 0,res2 = 0;
    for(auto [x,y]:a){
        res1 += col_eq(i,x.first,x.second,y.first,y.second);
        res2 += col_non_eq(i,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,n * n - res1);
}
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][it] = odd[j - 1][it];
                even[j][it] = even[j - 1][it];
                if(x & 1){
                    odd[j][it]++;
                }else{
                    even[j][it]++;
                }
            }
            it++;
        }
    }
    it = 0;
    for(int i = 1;i < n;i++){
        if(n % i == 0){
            res = min(res,1ll*get(i,it));
            it++;
        }
    }
    cout << res;
}
main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    test();
}

Compilation message

chessboard.cpp:62:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   62 | main(){
      | ^~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 102356 KB Output is correct
2 Correct 10 ms 24792 KB Output is correct
3 Correct 31 ms 136404 KB Output is correct
4 Correct 12 ms 7380 KB Output is correct
5 Correct 28 ms 93820 KB Output is correct
6 Correct 20 ms 80852 KB Output is correct
7 Correct 7 ms 38880 KB Output is correct
8 Correct 21 ms 80996 KB Output is correct
9 Correct 35 ms 53960 KB Output is correct
10 Correct 27 ms 64976 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 7 ms 4268 KB Output is correct
17 Correct 21 ms 6404 KB Output is correct
18 Correct 26 ms 6604 KB Output is correct
19 Correct 35 ms 7632 KB Output is correct
20 Correct 36 ms 6864 KB Output is correct
21 Correct 18 ms 6952 KB Output is correct
22 Correct 1 ms 3420 KB Output is correct
23 Correct 12 ms 4892 KB Output is correct
24 Correct 24 ms 7364 KB Output is correct
25 Correct 3 ms 3800 KB Output is correct
26 Correct 14 ms 5336 KB Output is correct
27 Correct 18 ms 7388 KB Output is correct
28 Correct 27 ms 6348 KB Output is correct
29 Correct 8 ms 4560 KB Output is correct
30 Correct 1 ms 3676 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 102356 KB Output is correct
2 Correct 10 ms 24792 KB Output is correct
3 Correct 31 ms 136404 KB Output is correct
4 Correct 12 ms 7380 KB Output is correct
5 Correct 28 ms 93820 KB Output is correct
6 Correct 20 ms 80852 KB Output is correct
7 Correct 7 ms 38880 KB Output is correct
8 Correct 21 ms 80996 KB Output is correct
9 Correct 35 ms 53960 KB Output is correct
10 Correct 27 ms 64976 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 0 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 604 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 604 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 0 ms 604 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 0 ms 604 KB Output is correct
26 Correct 7 ms 4268 KB Output is correct
27 Correct 21 ms 6404 KB Output is correct
28 Correct 26 ms 6604 KB Output is correct
29 Correct 35 ms 7632 KB Output is correct
30 Correct 36 ms 6864 KB Output is correct
31 Correct 18 ms 6952 KB Output is correct
32 Correct 1 ms 3420 KB Output is correct
33 Correct 12 ms 4892 KB Output is correct
34 Correct 24 ms 7364 KB Output is correct
35 Correct 3 ms 3800 KB Output is correct
36 Correct 14 ms 5336 KB Output is correct
37 Correct 18 ms 7388 KB Output is correct
38 Correct 27 ms 6348 KB Output is correct
39 Correct 8 ms 4560 KB Output is correct
40 Correct 1 ms 3676 KB Output is correct
41 Correct 188 ms 160904 KB Output is correct
42 Correct 63 ms 161424 KB Output is correct
43 Correct 99 ms 162756 KB Output is correct
44 Correct 63 ms 162544 KB Output is correct
45 Correct 47 ms 161472 KB Output is correct
46 Correct 180 ms 161244 KB Output is correct
47 Correct 45 ms 160708 KB Output is correct
48 Correct 80 ms 162000 KB Output is correct
49 Correct 65 ms 161732 KB Output is correct
50 Correct 705 ms 137164 KB Output is correct
51 Correct 789 ms 136572 KB Output is correct
52 Correct 691 ms 136128 KB Output is correct
53 Correct 794 ms 137156 KB Output is correct
54 Correct 707 ms 135876 KB Output is correct
55 Correct 804 ms 136400 KB Output is correct
56 Correct 678 ms 136384 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 36 ms 102356 KB Output is correct
10 Correct 10 ms 24792 KB Output is correct
11 Correct 31 ms 136404 KB Output is correct
12 Correct 12 ms 7380 KB Output is correct
13 Correct 28 ms 93820 KB Output is correct
14 Correct 20 ms 80852 KB Output is correct
15 Correct 7 ms 38880 KB Output is correct
16 Correct 21 ms 80996 KB Output is correct
17 Correct 35 ms 53960 KB Output is correct
18 Correct 27 ms 64976 KB Output is correct
19 Correct 1 ms 604 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 0 ms 604 KB Output is correct
25 Correct 0 ms 604 KB Output is correct
26 Correct 0 ms 604 KB Output is correct
27 Correct 0 ms 604 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 604 KB Output is correct
30 Correct 0 ms 604 KB Output is correct
31 Correct 0 ms 604 KB Output is correct
32 Correct 1 ms 604 KB Output is correct
33 Correct 0 ms 604 KB Output is correct
34 Correct 7 ms 4268 KB Output is correct
35 Correct 21 ms 6404 KB Output is correct
36 Correct 26 ms 6604 KB Output is correct
37 Correct 35 ms 7632 KB Output is correct
38 Correct 36 ms 6864 KB Output is correct
39 Correct 18 ms 6952 KB Output is correct
40 Correct 1 ms 3420 KB Output is correct
41 Correct 12 ms 4892 KB Output is correct
42 Correct 24 ms 7364 KB Output is correct
43 Correct 3 ms 3800 KB Output is correct
44 Correct 14 ms 5336 KB Output is correct
45 Correct 18 ms 7388 KB Output is correct
46 Correct 27 ms 6348 KB Output is correct
47 Correct 8 ms 4560 KB Output is correct
48 Correct 1 ms 3676 KB Output is correct
49 Correct 188 ms 160904 KB Output is correct
50 Correct 63 ms 161424 KB Output is correct
51 Correct 99 ms 162756 KB Output is correct
52 Correct 63 ms 162544 KB Output is correct
53 Correct 47 ms 161472 KB Output is correct
54 Correct 180 ms 161244 KB Output is correct
55 Correct 45 ms 160708 KB Output is correct
56 Correct 80 ms 162000 KB Output is correct
57 Correct 65 ms 161732 KB Output is correct
58 Correct 705 ms 137164 KB Output is correct
59 Correct 789 ms 136572 KB Output is correct
60 Correct 691 ms 136128 KB Output is correct
61 Correct 794 ms 137156 KB Output is correct
62 Correct 707 ms 135876 KB Output is correct
63 Correct 804 ms 136400 KB Output is correct
64 Correct 678 ms 136384 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 751 ms 136724 KB Output is correct
68 Correct 708 ms 136640 KB Output is correct
69 Correct 580 ms 135624 KB Output is correct
70 Incorrect 495 ms 136384 KB Output isn't correct
71 Halted 0 ms 0 KB -