oj.uz

Submission #880795

# Submission time Handle Problem Language Result Execution time Memory
880795 2023-11-30T05:06:23 Z dimashhh Chessboard (IZhO18_chessboard) C++17
70 / 100
 2000 ms 117412 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 27 ms 109912 KB Output is correct
2 Correct 26 ms 109936 KB Output is correct
3 Correct 25 ms 109916 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 109916 KB Output is correct
7 Correct 26 ms 110044 KB Output is correct
8 Correct 26 ms 110016 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 112132 KB Output is correct
2 Correct 36 ms 111068 KB Output is correct
3 Correct 39 ms 112332 KB Output is correct
4 Correct 38 ms 112076 KB Output is correct
5 Correct 40 ms 112080 KB Output is correct
6 Correct 37 ms 112088 KB Output is correct
7 Correct 33 ms 110428 KB Output is correct
8 Correct 41 ms 112080 KB Output is correct
9 Correct 53 ms 115604 KB Output is correct
10 Correct 43 ms 112008 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 109916 KB Output is correct
2 Correct 26 ms 110000 KB Output is correct
3 Correct 26 ms 110064 KB Output is correct
4 Correct 26 ms 110108 KB Output is correct
5 Correct 26 ms 109916 KB Output is correct
6 Correct 28 ms 109928 KB Output is correct
7 Correct 31 ms 110316 KB Output is correct
8 Correct 26 ms 109916 KB Output is correct
9 Correct 26 ms 110056 KB Output is correct
10 Correct 26 ms 109912 KB Output is correct
11 Correct 29 ms 109916 KB Output is correct
12 Correct 26 ms 109912 KB Output is correct
13 Correct 26 ms 109916 KB Output is correct
14 Correct 27 ms 109916 KB Output is correct
15 Correct 26 ms 110164 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 109916 KB Output is correct
2 Correct 26 ms 110000 KB Output is correct
3 Correct 26 ms 110064 KB Output is correct
4 Correct 26 ms 110108 KB Output is correct
5 Correct 26 ms 109916 KB Output is correct
6 Correct 28 ms 109928 KB Output is correct
7 Correct 31 ms 110316 KB Output is correct
8 Correct 26 ms 109916 KB Output is correct
9 Correct 26 ms 110056 KB Output is correct
10 Correct 26 ms 109912 KB Output is correct
11 Correct 29 ms 109916 KB Output is correct
12 Correct 26 ms 109912 KB Output is correct
13 Correct 26 ms 109916 KB Output is correct
14 Correct 27 ms 109916 KB Output is correct
15 Correct 26 ms 110164 KB Output is correct
16 Correct 35 ms 111064 KB Output is correct
17 Correct 47 ms 115756 KB Output is correct
18 Correct 53 ms 115920 KB Output is correct
19 Correct 92 ms 115408 KB Output is correct
20 Correct 102 ms 114376 KB Output is correct
21 Correct 45 ms 116124 KB Output is correct
22 Correct 27 ms 109912 KB Output is correct
23 Correct 42 ms 112080 KB Output is correct
24 Correct 50 ms 114680 KB Output is correct
25 Correct 33 ms 110612 KB Output is correct
26 Correct 44 ms 112088 KB Output is correct
27 Correct 48 ms 114640 KB Output is correct
28 Correct 51 ms 114388 KB Output is correct
29 Correct 35 ms 112192 KB Output is correct
30 Correct 27 ms 110172 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 112132 KB Output is correct
2 Correct 36 ms 111068 KB Output is correct
3 Correct 39 ms 112332 KB Output is correct
4 Correct 38 ms 112076 KB Output is correct
5 Correct 40 ms 112080 KB Output is correct
6 Correct 37 ms 112088 KB Output is correct
7 Correct 33 ms 110428 KB Output is correct
8 Correct 41 ms 112080 KB Output is correct
9 Correct 53 ms 115604 KB Output is correct
10 Correct 43 ms 112008 KB Output is correct
11 Correct 26 ms 109916 KB Output is correct
12 Correct 26 ms 110000 KB Output is correct
13 Correct 26 ms 110064 KB Output is correct
14 Correct 26 ms 110108 KB Output is correct
15 Correct 26 ms 109916 KB Output is correct
16 Correct 28 ms 109928 KB Output is correct
17 Correct 31 ms 110316 KB Output is correct
18 Correct 26 ms 109916 KB Output is correct
19 Correct 26 ms 110056 KB Output is correct
20 Correct 26 ms 109912 KB Output is correct
21 Correct 29 ms 109916 KB Output is correct
22 Correct 26 ms 109912 KB Output is correct
23 Correct 26 ms 109916 KB Output is correct
24 Correct 27 ms 109916 KB Output is correct
25 Correct 26 ms 110164 KB Output is correct
26 Correct 35 ms 111064 KB Output is correct
27 Correct 47 ms 115756 KB Output is correct
28 Correct 53 ms 115920 KB Output is correct
29 Correct 92 ms 115408 KB Output is correct
30 Correct 102 ms 114376 KB Output is correct
31 Correct 45 ms 116124 KB Output is correct
32 Correct 27 ms 109912 KB Output is correct
33 Correct 42 ms 112080 KB Output is correct
34 Correct 50 ms 114680 KB Output is correct
35 Correct 33 ms 110612 KB Output is correct
36 Correct 44 ms 112088 KB Output is correct
37 Correct 48 ms 114640 KB Output is correct
38 Correct 51 ms 114388 KB Output is correct
39 Correct 35 ms 112192 KB Output is correct
40 Correct 27 ms 110172 KB Output is correct
41 Correct 92 ms 116692 KB Output is correct
42 Correct 59 ms 117408 KB Output is correct
43 Correct 69 ms 116940 KB Output is correct
44 Correct 55 ms 115912 KB Output is correct
45 Correct 53 ms 116960 KB Output is correct
46 Correct 102 ms 116936 KB Output is correct
47 Correct 52 ms 116044 KB Output is correct
48 Correct 61 ms 116684 KB Output is correct
49 Correct 54 ms 116152 KB Output is correct
50 Correct 294 ms 117412 KB Output is correct
51 Correct 319 ms 117232 KB Output is correct
52 Correct 296 ms 117104 KB Output is correct
53 Correct 312 ms 116436 KB Output is correct
54 Correct 289 ms 116360 KB Output is correct
55 Correct 322 ms 116168 KB Output is correct
56 Correct 292 ms 117196 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 109912 KB Output is correct
2 Correct 26 ms 109936 KB Output is correct
3 Correct 25 ms 109916 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 109916 KB Output is correct
7 Correct 26 ms 110044 KB Output is correct
8 Correct 26 ms 110016 KB Output is correct
9 Correct 43 ms 112132 KB Output is correct
10 Correct 36 ms 111068 KB Output is correct
11 Correct 39 ms 112332 KB Output is correct
12 Correct 38 ms 112076 KB Output is correct
13 Correct 40 ms 112080 KB Output is correct
14 Correct 37 ms 112088 KB Output is correct
15 Correct 33 ms 110428 KB Output is correct
16 Correct 41 ms 112080 KB Output is correct
17 Correct 53 ms 115604 KB Output is correct
18 Correct 43 ms 112008 KB Output is correct
19 Correct 26 ms 109916 KB Output is correct
20 Correct 26 ms 110000 KB Output is correct
21 Correct 26 ms 110064 KB Output is correct
22 Correct 26 ms 110108 KB Output is correct
23 Correct 26 ms 109916 KB Output is correct
24 Correct 28 ms 109928 KB Output is correct
25 Correct 31 ms 110316 KB Output is correct
26 Correct 26 ms 109916 KB Output is correct
27 Correct 26 ms 110056 KB Output is correct
28 Correct 26 ms 109912 KB Output is correct
29 Correct 29 ms 109916 KB Output is correct
30 Correct 26 ms 109912 KB Output is correct
31 Correct 26 ms 109916 KB Output is correct
32 Correct 27 ms 109916 KB Output is correct
33 Correct 26 ms 110164 KB Output is correct
34 Correct 35 ms 111064 KB Output is correct
35 Correct 47 ms 115756 KB Output is correct
36 Correct 53 ms 115920 KB Output is correct
37 Correct 92 ms 115408 KB Output is correct
38 Correct 102 ms 114376 KB Output is correct
39 Correct 45 ms 116124 KB Output is correct
40 Correct 27 ms 109912 KB Output is correct
41 Correct 42 ms 112080 KB Output is correct
42 Correct 50 ms 114680 KB Output is correct
43 Correct 33 ms 110612 KB Output is correct
44 Correct 44 ms 112088 KB Output is correct
45 Correct 48 ms 114640 KB Output is correct
46 Correct 51 ms 114388 KB Output is correct
47 Correct 35 ms 112192 KB Output is correct
48 Correct 27 ms 110172 KB Output is correct
49 Correct 92 ms 116692 KB Output is correct
50 Correct 59 ms 117408 KB Output is correct
51 Correct 69 ms 116940 KB Output is correct
52 Correct 55 ms 115912 KB Output is correct
53 Correct 53 ms 116960 KB Output is correct
54 Correct 102 ms 116936 KB Output is correct
55 Correct 52 ms 116044 KB Output is correct
56 Correct 61 ms 116684 KB Output is correct
57 Correct 54 ms 116152 KB Output is correct
58 Correct 294 ms 117412 KB Output is correct
59 Correct 319 ms 117232 KB Output is correct
60 Correct 296 ms 117104 KB Output is correct
61 Correct 312 ms 116436 KB Output is correct
62 Correct 289 ms 116360 KB Output is correct
63 Correct 322 ms 116168 KB Output is correct
64 Correct 292 ms 117196 KB Output is correct
65 Correct 26 ms 109916 KB Output is correct
66 Correct 26 ms 109916 KB Output is correct
67 Execution timed out 2075 ms 116424 KB Time limit exceeded
68 Halted 0 ms 0 KB -