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Submission #289652

# Submission time Handle Problem Language Result Execution time Memory
289652 2020-09-02T21:18:54 Z Leonardo_Paes Chessboard (IZhO18_chessboard) C++17
70 / 100
 452 ms 3576 KB 
#include <bits/stdc++.h>
using namespace std;
#define f first
#define s second
typedef long long ll;
typedef pair<int,int> pii;
int main(){
    ll n, k;
    cin >> n >> k;
    if(k == 0){
        ll ans = n*n/2;
        for(ll i=2; i<=n; i++) if(n%i == 0) ans = min(ans, (i*i/2)*(n/i)*(n/i));
        cout << ans << "\n";
        return 0;
    }
    vector<pii> rec(k);
    for(int i=0; i<k; i++) cin >> rec[i].f >> rec[i].s >> rec[i].f >> rec[i].s;
    vector<ll> div;
    for(ll i=1; i*i<=n; i++){
        if(n%i == 0){
            div.push_back(i);
            if(n/i != i) div.push_back(n/i);
        }
    }
    ll ans = n*n;
    for(auto len : div){
        if(len == n) continue;
        ll a = 0, b = 0;
        for(auto r : rec){
            int i = (r.f + len - 1)/len;
            int j = (r.s + len - 1)/len;
            if((i+j)%2 == 0) a++;
            else b++;
        }
        ll qtdp = ((n/len)*(n/len)+1)/2*len*len;
        ll qtdb = n*n - qtdp;
        ans = min(ans, qtdp - a + b);
        ans = min(ans, qtdb - b + a);
    }
    cout << ans << "\n";
    /*
6 8
3 3 3 3
1 2 1 2
3 4 3 4
5 5 5 5
4 3 4 3
4 4 4 4
2 1 2 1
3 6 3 6
    */
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 1 ms 256 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 148 ms 2328 KB Output is correct
2 Correct 34 ms 768 KB Output is correct
3 Correct 89 ms 1528 KB Output is correct
4 Correct 86 ms 1528 KB Output is correct
5 Correct 122 ms 2064 KB Output is correct
6 Correct 78 ms 1400 KB Output is correct
7 Correct 17 ms 512 KB Output is correct
8 Correct 78 ms 1472 KB Output is correct
9 Correct 198 ms 3192 KB Output is correct
10 Correct 111 ms 1912 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 47 ms 1016 KB Output is correct
17 Correct 142 ms 2296 KB Output is correct
18 Correct 173 ms 2680 KB Output is correct
19 Correct 190 ms 2424 KB Output is correct
20 Correct 208 ms 2680 KB Output is correct
21 Correct 139 ms 2272 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 77 ms 1276 KB Output is correct
24 Correct 155 ms 2424 KB Output is correct
25 Correct 16 ms 512 KB Output is correct
26 Correct 100 ms 1700 KB Output is correct
27 Correct 119 ms 1912 KB Output is correct
28 Correct 165 ms 2552 KB Output is correct
29 Correct 57 ms 1144 KB Output is correct
30 Correct 5 ms 384 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 148 ms 2328 KB Output is correct
2 Correct 34 ms 768 KB Output is correct
3 Correct 89 ms 1528 KB Output is correct
4 Correct 86 ms 1528 KB Output is correct
5 Correct 122 ms 2064 KB Output is correct
6 Correct 78 ms 1400 KB Output is correct
7 Correct 17 ms 512 KB Output is correct
8 Correct 78 ms 1472 KB Output is correct
9 Correct 198 ms 3192 KB Output is correct
10 Correct 111 ms 1912 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 1 ms 256 KB Output is correct
13 Correct 1 ms 256 KB Output is correct
14 Correct 3 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 256 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 2 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 47 ms 1016 KB Output is correct
27 Correct 142 ms 2296 KB Output is correct
28 Correct 173 ms 2680 KB Output is correct
29 Correct 190 ms 2424 KB Output is correct
30 Correct 208 ms 2680 KB Output is correct
31 Correct 139 ms 2272 KB Output is correct
32 Correct 2 ms 384 KB Output is correct
33 Correct 77 ms 1276 KB Output is correct
34 Correct 155 ms 2424 KB Output is correct
35 Correct 16 ms 512 KB Output is correct
36 Correct 100 ms 1700 KB Output is correct
37 Correct 119 ms 1912 KB Output is correct
38 Correct 165 ms 2552 KB Output is correct
39 Correct 57 ms 1144 KB Output is correct
40 Correct 5 ms 384 KB Output is correct
41 Correct 221 ms 2936 KB Output is correct
42 Correct 213 ms 3320 KB Output is correct
43 Correct 204 ms 2936 KB Output is correct
44 Correct 207 ms 3248 KB Output is correct
45 Correct 225 ms 3448 KB Output is correct
46 Correct 245 ms 3320 KB Output is correct
47 Correct 198 ms 3192 KB Output is correct
48 Correct 206 ms 3064 KB Output is correct
49 Correct 193 ms 2940 KB Output is correct
50 Correct 411 ms 3244 KB Output is correct
51 Correct 440 ms 3448 KB Output is correct
52 Correct 406 ms 3320 KB Output is correct
53 Correct 435 ms 3448 KB Output is correct
54 Correct 400 ms 3320 KB Output is correct
55 Correct 452 ms 3576 KB Output is correct
56 Correct 394 ms 3192 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 148 ms 2328 KB Output is correct
10 Correct 34 ms 768 KB Output is correct
11 Correct 89 ms 1528 KB Output is correct
12 Correct 86 ms 1528 KB Output is correct
13 Correct 122 ms 2064 KB Output is correct
14 Correct 78 ms 1400 KB Output is correct
15 Correct 17 ms 512 KB Output is correct
16 Correct 78 ms 1472 KB Output is correct
17 Correct 198 ms 3192 KB Output is correct
18 Correct 111 ms 1912 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 1 ms 256 KB Output is correct
21 Correct 1 ms 256 KB Output is correct
22 Correct 3 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 2 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 256 KB Output is correct
29 Correct 2 ms 384 KB Output is correct
30 Correct 1 ms 384 KB Output is correct
31 Correct 2 ms 384 KB Output is correct
32 Correct 2 ms 384 KB Output is correct
33 Correct 2 ms 384 KB Output is correct
34 Correct 47 ms 1016 KB Output is correct
35 Correct 142 ms 2296 KB Output is correct
36 Correct 173 ms 2680 KB Output is correct
37 Correct 190 ms 2424 KB Output is correct
38 Correct 208 ms 2680 KB Output is correct
39 Correct 139 ms 2272 KB Output is correct
40 Correct 2 ms 384 KB Output is correct
41 Correct 77 ms 1276 KB Output is correct
42 Correct 155 ms 2424 KB Output is correct
43 Correct 16 ms 512 KB Output is correct
44 Correct 100 ms 1700 KB Output is correct
45 Correct 119 ms 1912 KB Output is correct
46 Correct 165 ms 2552 KB Output is correct
47 Correct 57 ms 1144 KB Output is correct
48 Correct 5 ms 384 KB Output is correct
49 Correct 221 ms 2936 KB Output is correct
50 Correct 213 ms 3320 KB Output is correct
51 Correct 204 ms 2936 KB Output is correct
52 Correct 207 ms 3248 KB Output is correct
53 Correct 225 ms 3448 KB Output is correct
54 Correct 245 ms 3320 KB Output is correct
55 Correct 198 ms 3192 KB Output is correct
56 Correct 206 ms 3064 KB Output is correct
57 Correct 193 ms 2940 KB Output is correct
58 Correct 411 ms 3244 KB Output is correct
59 Correct 440 ms 3448 KB Output is correct
60 Correct 406 ms 3320 KB Output is correct
61 Correct 435 ms 3448 KB Output is correct
62 Correct 400 ms 3320 KB Output is correct
63 Correct 452 ms 3576 KB Output is correct
64 Correct 394 ms 3192 KB Output is correct
65 Correct 0 ms 256 KB Output is correct
66 Incorrect 1 ms 256 KB Output isn't correct
67 Halted 0 ms 0 KB -