oj.uz

Submission #880853

# Submission time Handle Problem Language Result Execution time Memory
880853 2023-11-30T07:13:32 Z dimashhh Chessboard (IZhO18_chessboard) C++17
70 / 100
 936 ms 162240 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]);
    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;
    // cout << ((n * n / del / del) + 1) / 2 * del * del << '\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 0 ms 348 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 49 ms 102124 KB Output is correct
2 Correct 8 ms 24792 KB Output is correct
3 Correct 39 ms 136356 KB Output is correct
4 Correct 14 ms 7380 KB Output is correct
5 Correct 28 ms 93904 KB Output is correct
6 Correct 25 ms 80924 KB Output is correct
7 Correct 7 ms 38880 KB Output is correct
8 Correct 21 ms 80840 KB Output is correct
9 Correct 34 ms 53928 KB Output is correct
10 Correct 23 ms 64812 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 348 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 604 KB Output is correct
7 Correct 1 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 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 0 ms 604 KB Output is correct
2 Correct 0 ms 348 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 604 KB Output is correct
7 Correct 1 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 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 10 ms 4308 KB Output is correct
17 Correct 19 ms 6096 KB Output is correct
18 Correct 25 ms 7308 KB Output is correct
19 Correct 42 ms 6860 KB Output is correct
20 Correct 58 ms 6832 KB Output is correct
21 Correct 19 ms 7376 KB Output is correct
22 Correct 1 ms 3420 KB Output is correct
23 Correct 13 ms 4776 KB Output is correct
24 Correct 28 ms 6608 KB Output is correct
25 Correct 3 ms 3800 KB Output is correct
26 Correct 14 ms 5332 KB Output is correct
27 Correct 20 ms 7628 KB Output is correct
28 Correct 23 ms 6576 KB Output is correct
29 Correct 8 ms 4564 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 49 ms 102124 KB Output is correct
2 Correct 8 ms 24792 KB Output is correct
3 Correct 39 ms 136356 KB Output is correct
4 Correct 14 ms 7380 KB Output is correct
5 Correct 28 ms 93904 KB Output is correct
6 Correct 25 ms 80924 KB Output is correct
7 Correct 7 ms 38880 KB Output is correct
8 Correct 21 ms 80840 KB Output is correct
9 Correct 34 ms 53928 KB Output is correct
10 Correct 23 ms 64812 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 0 ms 348 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 604 KB Output is correct
17 Correct 1 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 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 10 ms 4308 KB Output is correct
27 Correct 19 ms 6096 KB Output is correct
28 Correct 25 ms 7308 KB Output is correct
29 Correct 42 ms 6860 KB Output is correct
30 Correct 58 ms 6832 KB Output is correct
31 Correct 19 ms 7376 KB Output is correct
32 Correct 1 ms 3420 KB Output is correct
33 Correct 13 ms 4776 KB Output is correct
34 Correct 28 ms 6608 KB Output is correct
35 Correct 3 ms 3800 KB Output is correct
36 Correct 14 ms 5332 KB Output is correct
37 Correct 20 ms 7628 KB Output is correct
38 Correct 23 ms 6576 KB Output is correct
39 Correct 8 ms 4564 KB Output is correct
40 Correct 2 ms 3676 KB Output is correct
41 Correct 231 ms 161680 KB Output is correct
42 Correct 64 ms 162236 KB Output is correct
43 Correct 116 ms 161056 KB Output is correct
44 Correct 65 ms 161604 KB Output is correct
45 Correct 50 ms 161468 KB Output is correct
46 Correct 209 ms 161212 KB Output is correct
47 Correct 47 ms 161476 KB Output is correct
48 Correct 88 ms 162164 KB Output is correct
49 Correct 61 ms 162240 KB Output is correct
50 Correct 842 ms 137220 KB Output is correct
51 Correct 870 ms 136184 KB Output is correct
52 Correct 855 ms 136896 KB Output is correct
53 Correct 917 ms 136704 KB Output is correct
54 Correct 816 ms 136072 KB Output is correct
55 Correct 936 ms 136292 KB Output is correct
56 Correct 813 ms 136856 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 49 ms 102124 KB Output is correct
10 Correct 8 ms 24792 KB Output is correct
11 Correct 39 ms 136356 KB Output is correct
12 Correct 14 ms 7380 KB Output is correct
13 Correct 28 ms 93904 KB Output is correct
14 Correct 25 ms 80924 KB Output is correct
15 Correct 7 ms 38880 KB Output is correct
16 Correct 21 ms 80840 KB Output is correct
17 Correct 34 ms 53928 KB Output is correct
18 Correct 23 ms 64812 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 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 1 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 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 10 ms 4308 KB Output is correct
35 Correct 19 ms 6096 KB Output is correct
36 Correct 25 ms 7308 KB Output is correct
37 Correct 42 ms 6860 KB Output is correct
38 Correct 58 ms 6832 KB Output is correct
39 Correct 19 ms 7376 KB Output is correct
40 Correct 1 ms 3420 KB Output is correct
41 Correct 13 ms 4776 KB Output is correct
42 Correct 28 ms 6608 KB Output is correct
43 Correct 3 ms 3800 KB Output is correct
44 Correct 14 ms 5332 KB Output is correct
45 Correct 20 ms 7628 KB Output is correct
46 Correct 23 ms 6576 KB Output is correct
47 Correct 8 ms 4564 KB Output is correct
48 Correct 2 ms 3676 KB Output is correct
49 Correct 231 ms 161680 KB Output is correct
50 Correct 64 ms 162236 KB Output is correct
51 Correct 116 ms 161056 KB Output is correct
52 Correct 65 ms 161604 KB Output is correct
53 Correct 50 ms 161468 KB Output is correct
54 Correct 209 ms 161212 KB Output is correct
55 Correct 47 ms 161476 KB Output is correct
56 Correct 88 ms 162164 KB Output is correct
57 Correct 61 ms 162240 KB Output is correct
58 Correct 842 ms 137220 KB Output is correct
59 Correct 870 ms 136184 KB Output is correct
60 Correct 855 ms 136896 KB Output is correct
61 Correct 917 ms 136704 KB Output is correct
62 Correct 816 ms 136072 KB Output is correct
63 Correct 936 ms 136292 KB Output is correct
64 Correct 813 ms 136856 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 787 ms 137044 KB Output is correct
68 Correct 839 ms 136124 KB Output is correct
69 Correct 605 ms 135880 KB Output is correct
70 Incorrect 528 ms 136008 KB Output isn't correct
71 Halted 0 ms 0 KB -