oj.uz

Submission #881020

# Submission time Handle Problem Language Result Execution time Memory
881020 2023-11-30T11:02:00 Z dimashhh Chessboard (IZhO18_chessboard) C++17
70 / 100
 1158 ms 163788 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){
    ll ret = (odd[x1][k] - odd[x - 1][k]) * (even[y1][k] - even[y - 1][k]);
    ret += (even[x1][k] - even[x - 1][k]) *1ll* (odd[y1][k] - odd[y - 1][k]);
    assert(ret == (x1 - x + 1) * (y1  - y + 1) - col_eq(k,x,y,x1,y1));
    return ret;
}
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);
    }
    res1 = ((n * n / del / del)+1) / 2 * (del * del) + res2 - res1;
    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 = (i + j - 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 348 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 432 KB Output is correct
4 Correct 1 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 600 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 60 ms 103364 KB Output is correct
2 Correct 9 ms 25260 KB Output is correct
3 Correct 46 ms 137120 KB Output is correct
4 Correct 13 ms 8288 KB Output is correct
5 Correct 29 ms 94932 KB Output is correct
6 Correct 21 ms 81536 KB Output is correct
7 Correct 8 ms 39136 KB Output is correct
8 Correct 23 ms 81728 KB Output is correct
9 Correct 34 ms 56036 KB Output is correct
10 Correct 25 ms 65740 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 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 472 KB Output is correct
7 Correct 1 ms 600 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 1 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 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

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 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 472 KB Output is correct
7 Correct 1 ms 600 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 1 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 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 11 ms 4900 KB Output is correct
17 Correct 20 ms 7108 KB Output is correct
18 Correct 35 ms 8396 KB Output is correct
19 Correct 54 ms 7880 KB Output is correct
20 Correct 61 ms 7632 KB Output is correct
21 Correct 19 ms 7364 KB Output is correct
22 Correct 1 ms 3420 KB Output is correct
23 Correct 15 ms 5204 KB Output is correct
24 Correct 27 ms 7852 KB Output is correct
25 Correct 4 ms 3800 KB Output is correct
26 Correct 15 ms 5972 KB Output is correct
27 Correct 20 ms 8400 KB Output is correct
28 Correct 25 ms 7564 KB Output is correct
29 Correct 9 ms 5052 KB Output is correct
30 Correct 2 ms 3676 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 60 ms 103364 KB Output is correct
2 Correct 9 ms 25260 KB Output is correct
3 Correct 46 ms 137120 KB Output is correct
4 Correct 13 ms 8288 KB Output is correct
5 Correct 29 ms 94932 KB Output is correct
6 Correct 21 ms 81536 KB Output is correct
7 Correct 8 ms 39136 KB Output is correct
8 Correct 23 ms 81728 KB Output is correct
9 Correct 34 ms 56036 KB Output is correct
10 Correct 25 ms 65740 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 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 472 KB Output is correct
17 Correct 1 ms 600 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 1 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 1 ms 604 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 11 ms 4900 KB Output is correct
27 Correct 20 ms 7108 KB Output is correct
28 Correct 35 ms 8396 KB Output is correct
29 Correct 54 ms 7880 KB Output is correct
30 Correct 61 ms 7632 KB Output is correct
31 Correct 19 ms 7364 KB Output is correct
32 Correct 1 ms 3420 KB Output is correct
33 Correct 15 ms 5204 KB Output is correct
34 Correct 27 ms 7852 KB Output is correct
35 Correct 4 ms 3800 KB Output is correct
36 Correct 15 ms 5972 KB Output is correct
37 Correct 20 ms 8400 KB Output is correct
38 Correct 25 ms 7564 KB Output is correct
39 Correct 9 ms 5052 KB Output is correct
40 Correct 2 ms 3676 KB Output is correct
41 Correct 242 ms 162232 KB Output is correct
42 Correct 68 ms 162848 KB Output is correct
43 Correct 178 ms 162752 KB Output is correct
44 Correct 73 ms 163788 KB Output is correct
45 Correct 52 ms 163516 KB Output is correct
46 Correct 240 ms 162500 KB Output is correct
47 Correct 54 ms 162756 KB Output is correct
48 Correct 97 ms 162492 KB Output is correct
49 Correct 63 ms 162560 KB Output is correct
50 Correct 1073 ms 137148 KB Output is correct
51 Correct 1072 ms 138692 KB Output is correct
52 Correct 1025 ms 137152 KB Output is correct
53 Correct 1071 ms 137432 KB Output is correct
54 Correct 1150 ms 137924 KB Output is correct
55 Correct 1158 ms 137668 KB Output is correct
56 Correct 1002 ms 138180 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 432 KB Output is correct
4 Correct 1 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 600 KB Output is correct
9 Correct 60 ms 103364 KB Output is correct
10 Correct 9 ms 25260 KB Output is correct
11 Correct 46 ms 137120 KB Output is correct
12 Correct 13 ms 8288 KB Output is correct
13 Correct 29 ms 94932 KB Output is correct
14 Correct 21 ms 81536 KB Output is correct
15 Correct 8 ms 39136 KB Output is correct
16 Correct 23 ms 81728 KB Output is correct
17 Correct 34 ms 56036 KB Output is correct
18 Correct 25 ms 65740 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 0 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 472 KB Output is correct
25 Correct 1 ms 600 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 0 ms 604 KB Output is correct
28 Correct 1 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 1 ms 604 KB Output is correct
32 Correct 1 ms 604 KB Output is correct
33 Correct 1 ms 604 KB Output is correct
34 Correct 11 ms 4900 KB Output is correct
35 Correct 20 ms 7108 KB Output is correct
36 Correct 35 ms 8396 KB Output is correct
37 Correct 54 ms 7880 KB Output is correct
38 Correct 61 ms 7632 KB Output is correct
39 Correct 19 ms 7364 KB Output is correct
40 Correct 1 ms 3420 KB Output is correct
41 Correct 15 ms 5204 KB Output is correct
42 Correct 27 ms 7852 KB Output is correct
43 Correct 4 ms 3800 KB Output is correct
44 Correct 15 ms 5972 KB Output is correct
45 Correct 20 ms 8400 KB Output is correct
46 Correct 25 ms 7564 KB Output is correct
47 Correct 9 ms 5052 KB Output is correct
48 Correct 2 ms 3676 KB Output is correct
49 Correct 242 ms 162232 KB Output is correct
50 Correct 68 ms 162848 KB Output is correct
51 Correct 178 ms 162752 KB Output is correct
52 Correct 73 ms 163788 KB Output is correct
53 Correct 52 ms 163516 KB Output is correct
54 Correct 240 ms 162500 KB Output is correct
55 Correct 54 ms 162756 KB Output is correct
56 Correct 97 ms 162492 KB Output is correct
57 Correct 63 ms 162560 KB Output is correct
58 Correct 1073 ms 137148 KB Output is correct
59 Correct 1072 ms 138692 KB Output is correct
60 Correct 1025 ms 137152 KB Output is correct
61 Correct 1071 ms 137432 KB Output is correct
62 Correct 1150 ms 137924 KB Output is correct
63 Correct 1158 ms 137668 KB Output is correct
64 Correct 1002 ms 138180 KB Output is correct
65 Correct 1 ms 348 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 1012 ms 137416 KB Output is correct
68 Correct 997 ms 137228 KB Output is correct
69 Correct 776 ms 136904 KB Output is correct
70 Incorrect 602 ms 137660 KB Output isn't correct
71 Halted 0 ms 0 KB -