oj.uz

Submission #90129

# Submission time Handle Problem Language Result Execution time Memory
90129 2018-12-20T13:27:33 Z adlet Chessboard (IZhO18_chessboard) C++17
70 / 100
 468 ms 2284 KB 
#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>

#define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)

using namespace std;

typedef long long ll;

#define int ll

const int N = 1e5 + 5;
const ll INF = 1e18;
const int mod = 1e9 + 7;
const double PI = acos(-1.0);

int n, k;

ll ans = INF;

vector < int > v;

int get(int x1, int y1, int d) {
    x1 /= d;
    y1 /= d;
    return ((x1 % 2) == (y1 % 2));
}
int x[N], y[N];

main() {
    cin >> n >> k;
    for (int i = 1; i <= k; ++i) {
        int x2, y2;
        cin >> x[i] >> y[i] >> x2 >> y2;
    }
    v.push_back(1);
    for (int i = 2; i * i <= n; ++i) {
        if (n % i == 0) {
            v.push_back(i);
            if (n / i != i) {
                v.push_back(n / i);
            }
        }
    }
    for (int i : v) {
        int m = n / i, cnt_black = 0, cnt_white = 0;
        ll black = (((m * m) / 2) + (m * m) % 2) * (i * 1ll * i);
        ll white = (n * 1ll * n) - black;
        for (int j = 1; j <= k; ++j) {
            cnt_black += get(x[j] - 1, y[j] - 1, i);
        }
        cnt_white = k - cnt_black;
        ll x = (black - cnt_black) + cnt_white;
        ll y = (white - cnt_white) + cnt_black;
        ans = min(ans, min(x, y));
    }
    cout << ans;
}

Compilation message

chessboard.cpp:30:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 372 KB Output is correct
3 Correct 2 ms 448 KB Output is correct
4 Correct 2 ms 448 KB Output is correct
5 Correct 2 ms 448 KB Output is correct
6 Correct 2 ms 448 KB Output is correct
7 Correct 2 ms 464 KB Output is correct
8 Correct 2 ms 464 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 89 ms 1548 KB Output is correct
2 Correct 23 ms 1548 KB Output is correct
3 Correct 57 ms 1548 KB Output is correct
4 Correct 57 ms 1548 KB Output is correct
5 Correct 79 ms 1548 KB Output is correct
6 Correct 50 ms 1548 KB Output is correct
7 Correct 12 ms 1548 KB Output is correct
8 Correct 51 ms 1548 KB Output is correct
9 Correct 125 ms 1888 KB Output is correct
10 Correct 73 ms 1888 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1888 KB Output is correct
2 Correct 2 ms 1888 KB Output is correct
3 Correct 2 ms 1888 KB Output is correct
4 Correct 3 ms 1888 KB Output is correct
5 Correct 3 ms 1888 KB Output is correct
6 Correct 2 ms 1888 KB Output is correct
7 Correct 3 ms 1888 KB Output is correct
8 Correct 3 ms 1888 KB Output is correct
9 Correct 3 ms 1888 KB Output is correct
10 Correct 2 ms 1888 KB Output is correct
11 Correct 2 ms 1888 KB Output is correct
12 Correct 2 ms 1888 KB Output is correct
13 Correct 3 ms 1888 KB Output is correct
14 Correct 3 ms 1888 KB Output is correct
15 Correct 3 ms 1888 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1888 KB Output is correct
2 Correct 2 ms 1888 KB Output is correct
3 Correct 2 ms 1888 KB Output is correct
4 Correct 3 ms 1888 KB Output is correct
5 Correct 3 ms 1888 KB Output is correct
6 Correct 2 ms 1888 KB Output is correct
7 Correct 3 ms 1888 KB Output is correct
8 Correct 3 ms 1888 KB Output is correct
9 Correct 3 ms 1888 KB Output is correct
10 Correct 2 ms 1888 KB Output is correct
11 Correct 2 ms 1888 KB Output is correct
12 Correct 2 ms 1888 KB Output is correct
13 Correct 3 ms 1888 KB Output is correct
14 Correct 3 ms 1888 KB Output is correct
15 Correct 3 ms 1888 KB Output is correct
16 Correct 32 ms 1888 KB Output is correct
17 Correct 90 ms 1888 KB Output is correct
18 Correct 111 ms 2200 KB Output is correct
19 Correct 152 ms 2200 KB Output is correct
20 Correct 171 ms 2200 KB Output is correct
21 Correct 86 ms 2200 KB Output is correct
22 Correct 3 ms 2200 KB Output is correct
23 Correct 53 ms 2200 KB Output is correct
24 Correct 99 ms 2200 KB Output is correct
25 Correct 12 ms 2200 KB Output is correct
26 Correct 64 ms 2200 KB Output is correct
27 Correct 82 ms 2200 KB Output is correct
28 Correct 105 ms 2200 KB Output is correct
29 Correct 37 ms 2200 KB Output is correct
30 Correct 5 ms 2200 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 89 ms 1548 KB Output is correct
2 Correct 23 ms 1548 KB Output is correct
3 Correct 57 ms 1548 KB Output is correct
4 Correct 57 ms 1548 KB Output is correct
5 Correct 79 ms 1548 KB Output is correct
6 Correct 50 ms 1548 KB Output is correct
7 Correct 12 ms 1548 KB Output is correct
8 Correct 51 ms 1548 KB Output is correct
9 Correct 125 ms 1888 KB Output is correct
10 Correct 73 ms 1888 KB Output is correct
11 Correct 2 ms 1888 KB Output is correct
12 Correct 2 ms 1888 KB Output is correct
13 Correct 2 ms 1888 KB Output is correct
14 Correct 3 ms 1888 KB Output is correct
15 Correct 3 ms 1888 KB Output is correct
16 Correct 2 ms 1888 KB Output is correct
17 Correct 3 ms 1888 KB Output is correct
18 Correct 3 ms 1888 KB Output is correct
19 Correct 3 ms 1888 KB Output is correct
20 Correct 2 ms 1888 KB Output is correct
21 Correct 2 ms 1888 KB Output is correct
22 Correct 2 ms 1888 KB Output is correct
23 Correct 3 ms 1888 KB Output is correct
24 Correct 3 ms 1888 KB Output is correct
25 Correct 3 ms 1888 KB Output is correct
26 Correct 32 ms 1888 KB Output is correct
27 Correct 90 ms 1888 KB Output is correct
28 Correct 111 ms 2200 KB Output is correct
29 Correct 152 ms 2200 KB Output is correct
30 Correct 171 ms 2200 KB Output is correct
31 Correct 86 ms 2200 KB Output is correct
32 Correct 3 ms 2200 KB Output is correct
33 Correct 53 ms 2200 KB Output is correct
34 Correct 99 ms 2200 KB Output is correct
35 Correct 12 ms 2200 KB Output is correct
36 Correct 64 ms 2200 KB Output is correct
37 Correct 82 ms 2200 KB Output is correct
38 Correct 105 ms 2200 KB Output is correct
39 Correct 37 ms 2200 KB Output is correct
40 Correct 5 ms 2200 KB Output is correct
41 Correct 166 ms 2200 KB Output is correct
42 Correct 141 ms 2200 KB Output is correct
43 Correct 142 ms 2200 KB Output is correct
44 Correct 138 ms 2200 KB Output is correct
45 Correct 139 ms 2200 KB Output is correct
46 Correct 185 ms 2200 KB Output is correct
47 Correct 122 ms 2200 KB Output is correct
48 Correct 141 ms 2200 KB Output is correct
49 Correct 125 ms 2200 KB Output is correct
50 Correct 429 ms 2200 KB Output is correct
51 Correct 452 ms 2264 KB Output is correct
52 Correct 419 ms 2264 KB Output is correct
53 Correct 454 ms 2284 KB Output is correct
54 Correct 413 ms 2284 KB Output is correct
55 Correct 468 ms 2284 KB Output is correct
56 Correct 401 ms 2284 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 372 KB Output is correct
3 Correct 2 ms 448 KB Output is correct
4 Correct 2 ms 448 KB Output is correct
5 Correct 2 ms 448 KB Output is correct
6 Correct 2 ms 448 KB Output is correct
7 Correct 2 ms 464 KB Output is correct
8 Correct 2 ms 464 KB Output is correct
9 Correct 89 ms 1548 KB Output is correct
10 Correct 23 ms 1548 KB Output is correct
11 Correct 57 ms 1548 KB Output is correct
12 Correct 57 ms 1548 KB Output is correct
13 Correct 79 ms 1548 KB Output is correct
14 Correct 50 ms 1548 KB Output is correct
15 Correct 12 ms 1548 KB Output is correct
16 Correct 51 ms 1548 KB Output is correct
17 Correct 125 ms 1888 KB Output is correct
18 Correct 73 ms 1888 KB Output is correct
19 Correct 2 ms 1888 KB Output is correct
20 Correct 2 ms 1888 KB Output is correct
21 Correct 2 ms 1888 KB Output is correct
22 Correct 3 ms 1888 KB Output is correct
23 Correct 3 ms 1888 KB Output is correct
24 Correct 2 ms 1888 KB Output is correct
25 Correct 3 ms 1888 KB Output is correct
26 Correct 3 ms 1888 KB Output is correct
27 Correct 3 ms 1888 KB Output is correct
28 Correct 2 ms 1888 KB Output is correct
29 Correct 2 ms 1888 KB Output is correct
30 Correct 2 ms 1888 KB Output is correct
31 Correct 3 ms 1888 KB Output is correct
32 Correct 3 ms 1888 KB Output is correct
33 Correct 3 ms 1888 KB Output is correct
34 Correct 32 ms 1888 KB Output is correct
35 Correct 90 ms 1888 KB Output is correct
36 Correct 111 ms 2200 KB Output is correct
37 Correct 152 ms 2200 KB Output is correct
38 Correct 171 ms 2200 KB Output is correct
39 Correct 86 ms 2200 KB Output is correct
40 Correct 3 ms 2200 KB Output is correct
41 Correct 53 ms 2200 KB Output is correct
42 Correct 99 ms 2200 KB Output is correct
43 Correct 12 ms 2200 KB Output is correct
44 Correct 64 ms 2200 KB Output is correct
45 Correct 82 ms 2200 KB Output is correct
46 Correct 105 ms 2200 KB Output is correct
47 Correct 37 ms 2200 KB Output is correct
48 Correct 5 ms 2200 KB Output is correct
49 Correct 166 ms 2200 KB Output is correct
50 Correct 141 ms 2200 KB Output is correct
51 Correct 142 ms 2200 KB Output is correct
52 Correct 138 ms 2200 KB Output is correct
53 Correct 139 ms 2200 KB Output is correct
54 Correct 185 ms 2200 KB Output is correct
55 Correct 122 ms 2200 KB Output is correct
56 Correct 141 ms 2200 KB Output is correct
57 Correct 125 ms 2200 KB Output is correct
58 Correct 429 ms 2200 KB Output is correct
59 Correct 452 ms 2264 KB Output is correct
60 Correct 419 ms 2264 KB Output is correct
61 Correct 454 ms 2284 KB Output is correct
62 Correct 413 ms 2284 KB Output is correct
63 Correct 468 ms 2284 KB Output is correct
64 Correct 401 ms 2284 KB Output is correct
65 Correct 2 ms 2284 KB Output is correct
66 Incorrect 2 ms 2284 KB Output isn't correct
67 Halted 0 ms 0 KB -