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Submission #368087

# Submission time Handle Problem Language Result Execution time Memory
368087 2021-02-19T13:22:53 Z nicolaalexandra Chessboard (IZhO18_chessboard) C++14
47 / 100
 249 ms 4320 KB 
#include <bits/stdc++.h>

using namespace std;

int n,k,i,x,y,x2,y2;
struct dreptunghi{
    int x,y,x2,y2;
};
vector <dreptunghi> v;

long long count_(int x, int y, int val){
    if (!x || !y)
        return 0;

    long long sol = 1LL * (x/val) * (y/val) / 2 * val * val;
    int lastx = (x/val) * val, lasty = (y/val) * val;

    if (x/val % 2)
        sol +=  (y/val + 1)/2  * val * (x - lastx);
    else sol += (y/val/2) * val * (x - lastx);


    if (y/val % 2)
        sol += (x/val + 1)/2 * val * (y - lasty);
    else sol += (x/val/2) * val * (y - lasty);


    if (!(x/val % 2 == y/val%2))
        sol += (x - lastx) * (y - lasty);

    return sol;
}

long long solve (int val){
    long long albe = 1LL * (n/val) * (n/val) / 2 * val * val; /// cate ar trebui sa fac albe daca e toata tabla neagra
    long long negre = 1LL * n * n - albe;

    for (auto it : v){
        int x = it.x, y = it.y, x2 = it.x2, y2 = it.y2;

        long long cnt = count_(x2,y2,val) - count_(x2,y-1,val) - count_(x-1,y2,val) + count_(x-1,y-1,val);

        negre -= (x2-x+1) * (y2-y+1) - cnt; /// nu are sens sa le fac pe astea negre
        negre += cnt; /// trb sa le fac la loc  albe pe astea

        albe += (x2-x+1) * (y2-y+1) - cnt;
        albe -= cnt;
    }

    return min (albe,negre);
}

int main (){

    //ifstream cin ("date.in");
    //ofstream cout ("date.out");

    cin>>n>>k;
    for (i=1;i<=k;i++){
        cin>>x>>y>>x2>>y2;
        v.push_back({x,y,x2,y2});
    }

    long long sol = 1LL * n * n;
    for (int d=1;d<n;d++){
        if (n % d == 0)
            sol = min (sol,solve(d));
    }

    cout<<sol;

    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 2912 KB Output is correct
2 Correct 20 ms 1256 KB Output is correct
3 Correct 52 ms 2404 KB Output is correct
4 Correct 51 ms 2276 KB Output is correct
5 Correct 71 ms 2656 KB Output is correct
6 Correct 45 ms 2276 KB Output is correct
7 Correct 10 ms 748 KB Output is correct
8 Correct 47 ms 2416 KB Output is correct
9 Correct 115 ms 4192 KB Output is correct
10 Correct 63 ms 2532 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 2 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 2 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 2 ms 364 KB Output is correct
15 Correct 2 ms 364 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 2 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 2 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 2 ms 364 KB Output is correct
15 Correct 2 ms 364 KB Output is correct
16 Correct 33 ms 1512 KB Output is correct
17 Correct 86 ms 3808 KB Output is correct
18 Correct 111 ms 3808 KB Output is correct
19 Correct 222 ms 3808 KB Output is correct
20 Correct 249 ms 3936 KB Output is correct
21 Correct 83 ms 3800 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 59 ms 2148 KB Output is correct
24 Correct 106 ms 3808 KB Output is correct
25 Correct 12 ms 788 KB Output is correct
26 Correct 64 ms 2276 KB Output is correct
27 Correct 86 ms 3552 KB Output is correct
28 Correct 108 ms 3808 KB Output is correct
29 Correct 34 ms 2020 KB Output is correct
30 Correct 4 ms 492 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 2912 KB Output is correct
2 Correct 20 ms 1256 KB Output is correct
3 Correct 52 ms 2404 KB Output is correct
4 Correct 51 ms 2276 KB Output is correct
5 Correct 71 ms 2656 KB Output is correct
6 Correct 45 ms 2276 KB Output is correct
7 Correct 10 ms 748 KB Output is correct
8 Correct 47 ms 2416 KB Output is correct
9 Correct 115 ms 4192 KB Output is correct
10 Correct 63 ms 2532 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 2 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 2 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 2 ms 364 KB Output is correct
24 Correct 2 ms 364 KB Output is correct
25 Correct 2 ms 364 KB Output is correct
26 Correct 33 ms 1512 KB Output is correct
27 Correct 86 ms 3808 KB Output is correct
28 Correct 111 ms 3808 KB Output is correct
29 Correct 222 ms 3808 KB Output is correct
30 Correct 249 ms 3936 KB Output is correct
31 Correct 83 ms 3800 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 59 ms 2148 KB Output is correct
34 Correct 106 ms 3808 KB Output is correct
35 Correct 12 ms 788 KB Output is correct
36 Correct 64 ms 2276 KB Output is correct
37 Correct 86 ms 3552 KB Output is correct
38 Correct 108 ms 3808 KB Output is correct
39 Correct 34 ms 2020 KB Output is correct
40 Correct 4 ms 492 KB Output is correct
41 Correct 220 ms 4320 KB Output is correct
42 Correct 134 ms 4320 KB Output is correct
43 Correct 159 ms 4320 KB Output is correct
44 Correct 128 ms 4320 KB Output is correct
45 Correct 129 ms 4320 KB Output is correct
46 Incorrect 245 ms 4320 KB Output isn't correct
47 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 80 ms 2912 KB Output is correct
10 Correct 20 ms 1256 KB Output is correct
11 Correct 52 ms 2404 KB Output is correct
12 Correct 51 ms 2276 KB Output is correct
13 Correct 71 ms 2656 KB Output is correct
14 Correct 45 ms 2276 KB Output is correct
15 Correct 10 ms 748 KB Output is correct
16 Correct 47 ms 2416 KB Output is correct
17 Correct 115 ms 4192 KB Output is correct
18 Correct 63 ms 2532 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 2 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 2 ms 364 KB Output is correct
32 Correct 2 ms 364 KB Output is correct
33 Correct 2 ms 364 KB Output is correct
34 Correct 33 ms 1512 KB Output is correct
35 Correct 86 ms 3808 KB Output is correct
36 Correct 111 ms 3808 KB Output is correct
37 Correct 222 ms 3808 KB Output is correct
38 Correct 249 ms 3936 KB Output is correct
39 Correct 83 ms 3800 KB Output is correct
40 Correct 1 ms 384 KB Output is correct
41 Correct 59 ms 2148 KB Output is correct
42 Correct 106 ms 3808 KB Output is correct
43 Correct 12 ms 788 KB Output is correct
44 Correct 64 ms 2276 KB Output is correct
45 Correct 86 ms 3552 KB Output is correct
46 Correct 108 ms 3808 KB Output is correct
47 Correct 34 ms 2020 KB Output is correct
48 Correct 4 ms 492 KB Output is correct
49 Correct 220 ms 4320 KB Output is correct
50 Correct 134 ms 4320 KB Output is correct
51 Correct 159 ms 4320 KB Output is correct
52 Correct 128 ms 4320 KB Output is correct
53 Correct 129 ms 4320 KB Output is correct
54 Incorrect 245 ms 4320 KB Output isn't correct
55 Halted 0 ms 0 KB -