oj.uz

Submission #880794

# Submission time Handle Problem Language Result Execution time Memory
880794 2023-11-30T05:05:46 Z dimashhh Chessboard (IZhO18_chessboard) C++17
47 / 100
 313 ms 262144 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1e6 + 12;
#define int long long
unordered_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 38 ms 109916 KB Output is correct
2 Correct 26 ms 109916 KB Output is correct
3 Correct 27 ms 110100 KB Output is correct
4 Correct 26 ms 109912 KB Output is correct
5 Correct 26 ms 110052 KB Output is correct
6 Correct 26 ms 109912 KB Output is correct
7 Correct 26 ms 110084 KB Output is correct
8 Correct 26 ms 109916 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 130508 KB Output is correct
2 Correct 40 ms 114636 KB Output is correct
3 Correct 86 ms 135368 KB Output is correct
4 Correct 42 ms 113236 KB Output is correct
5 Correct 74 ms 128656 KB Output is correct
6 Correct 66 ms 125384 KB Output is correct
7 Correct 41 ms 116700 KB Output is correct
8 Correct 64 ms 125644 KB Output is correct
9 Correct 76 ms 123672 KB Output is correct
10 Correct 69 ms 122808 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 109916 KB Output is correct
2 Correct 26 ms 110092 KB Output is correct
3 Correct 26 ms 109912 KB Output is correct
4 Correct 26 ms 109916 KB Output is correct
5 Correct 26 ms 109916 KB Output is correct
6 Correct 26 ms 109912 KB Output is correct
7 Correct 31 ms 110172 KB Output is correct
8 Correct 27 ms 109912 KB Output is correct
9 Correct 28 ms 109920 KB Output is correct
10 Correct 26 ms 109916 KB Output is correct
11 Correct 27 ms 110040 KB Output is correct
12 Correct 29 ms 110108 KB Output is correct
13 Correct 27 ms 110060 KB Output is correct
14 Correct 27 ms 109916 KB Output is correct
15 Correct 27 ms 109984 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 109916 KB Output is correct
2 Correct 26 ms 110092 KB Output is correct
3 Correct 26 ms 109912 KB Output is correct
4 Correct 26 ms 109916 KB Output is correct
5 Correct 26 ms 109916 KB Output is correct
6 Correct 26 ms 109912 KB Output is correct
7 Correct 31 ms 110172 KB Output is correct
8 Correct 27 ms 109912 KB Output is correct
9 Correct 28 ms 109920 KB Output is correct
10 Correct 26 ms 109916 KB Output is correct
11 Correct 27 ms 110040 KB Output is correct
12 Correct 29 ms 110108 KB Output is correct
13 Correct 27 ms 110060 KB Output is correct
14 Correct 27 ms 109916 KB Output is correct
15 Correct 27 ms 109984 KB Output is correct
16 Correct 35 ms 111580 KB Output is correct
17 Correct 47 ms 115760 KB Output is correct
18 Correct 53 ms 116412 KB Output is correct
19 Correct 96 ms 115912 KB Output is correct
20 Correct 104 ms 116168 KB Output is correct
21 Correct 47 ms 115404 KB Output is correct
22 Correct 29 ms 111452 KB Output is correct
23 Correct 42 ms 112600 KB Output is correct
24 Correct 56 ms 115284 KB Output is correct
25 Correct 36 ms 111068 KB Output is correct
26 Correct 43 ms 112932 KB Output is correct
27 Correct 48 ms 116304 KB Output is correct
28 Correct 53 ms 116936 KB Output is correct
29 Correct 34 ms 112708 KB Output is correct
30 Correct 28 ms 110428 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 130508 KB Output is correct
2 Correct 40 ms 114636 KB Output is correct
3 Correct 86 ms 135368 KB Output is correct
4 Correct 42 ms 113236 KB Output is correct
5 Correct 74 ms 128656 KB Output is correct
6 Correct 66 ms 125384 KB Output is correct
7 Correct 41 ms 116700 KB Output is correct
8 Correct 64 ms 125644 KB Output is correct
9 Correct 76 ms 123672 KB Output is correct
10 Correct 69 ms 122808 KB Output is correct
11 Correct 27 ms 109916 KB Output is correct
12 Correct 26 ms 110092 KB Output is correct
13 Correct 26 ms 109912 KB Output is correct
14 Correct 26 ms 109916 KB Output is correct
15 Correct 26 ms 109916 KB Output is correct
16 Correct 26 ms 109912 KB Output is correct
17 Correct 31 ms 110172 KB Output is correct
18 Correct 27 ms 109912 KB Output is correct
19 Correct 28 ms 109920 KB Output is correct
20 Correct 26 ms 109916 KB Output is correct
21 Correct 27 ms 110040 KB Output is correct
22 Correct 29 ms 110108 KB Output is correct
23 Correct 27 ms 110060 KB Output is correct
24 Correct 27 ms 109916 KB Output is correct
25 Correct 27 ms 109984 KB Output is correct
26 Correct 35 ms 111580 KB Output is correct
27 Correct 47 ms 115760 KB Output is correct
28 Correct 53 ms 116412 KB Output is correct
29 Correct 96 ms 115912 KB Output is correct
30 Correct 104 ms 116168 KB Output is correct
31 Correct 47 ms 115404 KB Output is correct
32 Correct 29 ms 111452 KB Output is correct
33 Correct 42 ms 112600 KB Output is correct
34 Correct 56 ms 115284 KB Output is correct
35 Correct 36 ms 111068 KB Output is correct
36 Correct 43 ms 112932 KB Output is correct
37 Correct 48 ms 116304 KB Output is correct
38 Correct 53 ms 116936 KB Output is correct
39 Correct 34 ms 112708 KB Output is correct
40 Correct 28 ms 110428 KB Output is correct
41 Runtime error 313 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 38 ms 109916 KB Output is correct
2 Correct 26 ms 109916 KB Output is correct
3 Correct 27 ms 110100 KB Output is correct
4 Correct 26 ms 109912 KB Output is correct
5 Correct 26 ms 110052 KB Output is correct
6 Correct 26 ms 109912 KB Output is correct
7 Correct 26 ms 110084 KB Output is correct
8 Correct 26 ms 109916 KB Output is correct
9 Correct 80 ms 130508 KB Output is correct
10 Correct 40 ms 114636 KB Output is correct
11 Correct 86 ms 135368 KB Output is correct
12 Correct 42 ms 113236 KB Output is correct
13 Correct 74 ms 128656 KB Output is correct
14 Correct 66 ms 125384 KB Output is correct
15 Correct 41 ms 116700 KB Output is correct
16 Correct 64 ms 125644 KB Output is correct
17 Correct 76 ms 123672 KB Output is correct
18 Correct 69 ms 122808 KB Output is correct
19 Correct 27 ms 109916 KB Output is correct
20 Correct 26 ms 110092 KB Output is correct
21 Correct 26 ms 109912 KB Output is correct
22 Correct 26 ms 109916 KB Output is correct
23 Correct 26 ms 109916 KB Output is correct
24 Correct 26 ms 109912 KB Output is correct
25 Correct 31 ms 110172 KB Output is correct
26 Correct 27 ms 109912 KB Output is correct
27 Correct 28 ms 109920 KB Output is correct
28 Correct 26 ms 109916 KB Output is correct
29 Correct 27 ms 110040 KB Output is correct
30 Correct 29 ms 110108 KB Output is correct
31 Correct 27 ms 110060 KB Output is correct
32 Correct 27 ms 109916 KB Output is correct
33 Correct 27 ms 109984 KB Output is correct
34 Correct 35 ms 111580 KB Output is correct
35 Correct 47 ms 115760 KB Output is correct
36 Correct 53 ms 116412 KB Output is correct
37 Correct 96 ms 115912 KB Output is correct
38 Correct 104 ms 116168 KB Output is correct
39 Correct 47 ms 115404 KB Output is correct
40 Correct 29 ms 111452 KB Output is correct
41 Correct 42 ms 112600 KB Output is correct
42 Correct 56 ms 115284 KB Output is correct
43 Correct 36 ms 111068 KB Output is correct
44 Correct 43 ms 112932 KB Output is correct
45 Correct 48 ms 116304 KB Output is correct
46 Correct 53 ms 116936 KB Output is correct
47 Correct 34 ms 112708 KB Output is correct
48 Correct 28 ms 110428 KB Output is correct
49 Runtime error 313 ms 262144 KB Execution killed with signal 9
50 Halted 0 ms 0 KB -