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Submission #168456

# Submission time Handle Problem Language Result Execution time Memory
168456 2019-12-13T06:57:56 Z achibasadzishvili Chessboard (IZhO18_chessboard) C++14
70 / 100
 344 ms 3356 KB 
#include <bits/stdc++.h>
#define ll long long
#define f first
#define s second
#define pb push_back
#define mp make_pair
using namespace std;
ll ans,n,k,x[200005],y[200005];
void solve(ll t){
    if(t == n)return;
    ll raod = 0;
    for(int i=1; i<=k; i++)
        if((x[i] / t + y[i] / t) % 2 == 0)raod++;
    if((n / t) % 2 == 0){
        raod = max(raod , k - raod);
        ans = min(ans , ((n * n) / 2) - raod + k - raod);
    }
    else{
        ll fir = (((n/t)*(n/t))/2 + 1) * (t * t) - raod + (k - raod);
        ll sec = (((n/t)*(n/t))/2) * (t * t) - (k - raod) + raod;
        ans = min(ans , min(fir , sec));
    }
}
int main(){
    ios::sync_with_stdio(false);
    cin >> n >> k;

    for(int i=1; i<=k; i++){
        cin >> x[i] >> y[i] >> x[i] >> y[i];
        x[i]--;
        y[i]--;
    }


    ans = n * n;

    for(int i=1; i<=sqrt(n); i++){
        if((n % i) == 0){
            solve(n / i);
            solve(i);
        }
    }


    cout << ans << endl;



    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 2168 KB Output is correct
2 Correct 10 ms 988 KB Output is correct
3 Correct 21 ms 1956 KB Output is correct
4 Correct 22 ms 1784 KB Output is correct
5 Correct 28 ms 2524 KB Output is correct
6 Correct 19 ms 1784 KB Output is correct
7 Correct 6 ms 632 KB Output is correct
8 Correct 19 ms 1784 KB Output is correct
9 Correct 46 ms 3356 KB Output is correct
10 Correct 26 ms 2296 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 380 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 380 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 380 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 380 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 14 ms 1272 KB Output is correct
17 Correct 35 ms 3024 KB Output is correct
18 Correct 46 ms 3092 KB Output is correct
19 Correct 91 ms 3064 KB Output is correct
20 Correct 101 ms 3268 KB Output is correct
21 Correct 34 ms 2944 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 25 ms 1784 KB Output is correct
24 Correct 42 ms 3080 KB Output is correct
25 Correct 7 ms 632 KB Output is correct
26 Correct 27 ms 2172 KB Output is correct
27 Correct 35 ms 2552 KB Output is correct
28 Correct 46 ms 3064 KB Output is correct
29 Correct 15 ms 1400 KB Output is correct
30 Correct 3 ms 376 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 2168 KB Output is correct
2 Correct 10 ms 988 KB Output is correct
3 Correct 21 ms 1956 KB Output is correct
4 Correct 22 ms 1784 KB Output is correct
5 Correct 28 ms 2524 KB Output is correct
6 Correct 19 ms 1784 KB Output is correct
7 Correct 6 ms 632 KB Output is correct
8 Correct 19 ms 1784 KB Output is correct
9 Correct 46 ms 3356 KB Output is correct
10 Correct 26 ms 2296 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 380 KB Output is correct
18 Correct 2 ms 348 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 380 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 14 ms 1272 KB Output is correct
27 Correct 35 ms 3024 KB Output is correct
28 Correct 46 ms 3092 KB Output is correct
29 Correct 91 ms 3064 KB Output is correct
30 Correct 101 ms 3268 KB Output is correct
31 Correct 34 ms 2944 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 25 ms 1784 KB Output is correct
34 Correct 42 ms 3080 KB Output is correct
35 Correct 7 ms 632 KB Output is correct
36 Correct 27 ms 2172 KB Output is correct
37 Correct 35 ms 2552 KB Output is correct
38 Correct 46 ms 3064 KB Output is correct
39 Correct 15 ms 1400 KB Output is correct
40 Correct 3 ms 376 KB Output is correct
41 Correct 83 ms 2808 KB Output is correct
42 Correct 50 ms 2908 KB Output is correct
43 Correct 61 ms 2808 KB Output is correct
44 Correct 49 ms 2936 KB Output is correct
45 Correct 48 ms 3064 KB Output is correct
46 Correct 93 ms 2936 KB Output is correct
47 Correct 42 ms 2808 KB Output is correct
48 Correct 55 ms 2896 KB Output is correct
49 Correct 45 ms 2808 KB Output is correct
50 Correct 313 ms 3004 KB Output is correct
51 Correct 333 ms 3192 KB Output is correct
52 Correct 310 ms 2936 KB Output is correct
53 Correct 332 ms 3068 KB Output is correct
54 Correct 309 ms 3064 KB Output is correct
55 Correct 344 ms 3064 KB Output is correct
56 Correct 298 ms 2936 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 32 ms 2168 KB Output is correct
10 Correct 10 ms 988 KB Output is correct
11 Correct 21 ms 1956 KB Output is correct
12 Correct 22 ms 1784 KB Output is correct
13 Correct 28 ms 2524 KB Output is correct
14 Correct 19 ms 1784 KB Output is correct
15 Correct 6 ms 632 KB Output is correct
16 Correct 19 ms 1784 KB Output is correct
17 Correct 46 ms 3356 KB Output is correct
18 Correct 26 ms 2296 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 3 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 380 KB Output is correct
26 Correct 2 ms 348 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 380 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 2 ms 376 KB Output is correct
34 Correct 14 ms 1272 KB Output is correct
35 Correct 35 ms 3024 KB Output is correct
36 Correct 46 ms 3092 KB Output is correct
37 Correct 91 ms 3064 KB Output is correct
38 Correct 101 ms 3268 KB Output is correct
39 Correct 34 ms 2944 KB Output is correct
40 Correct 2 ms 376 KB Output is correct
41 Correct 25 ms 1784 KB Output is correct
42 Correct 42 ms 3080 KB Output is correct
43 Correct 7 ms 632 KB Output is correct
44 Correct 27 ms 2172 KB Output is correct
45 Correct 35 ms 2552 KB Output is correct
46 Correct 46 ms 3064 KB Output is correct
47 Correct 15 ms 1400 KB Output is correct
48 Correct 3 ms 376 KB Output is correct
49 Correct 83 ms 2808 KB Output is correct
50 Correct 50 ms 2908 KB Output is correct
51 Correct 61 ms 2808 KB Output is correct
52 Correct 49 ms 2936 KB Output is correct
53 Correct 48 ms 3064 KB Output is correct
54 Correct 93 ms 2936 KB Output is correct
55 Correct 42 ms 2808 KB Output is correct
56 Correct 55 ms 2896 KB Output is correct
57 Correct 45 ms 2808 KB Output is correct
58 Correct 313 ms 3004 KB Output is correct
59 Correct 333 ms 3192 KB Output is correct
60 Correct 310 ms 2936 KB Output is correct
61 Correct 332 ms 3068 KB Output is correct
62 Correct 309 ms 3064 KB Output is correct
63 Correct 344 ms 3064 KB Output is correct
64 Correct 298 ms 2936 KB Output is correct
65 Correct 2 ms 376 KB Output is correct
66 Incorrect 2 ms 376 KB Output isn't correct
67 Halted 0 ms 0 KB -