답안 #90129 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
90129	2018-12-20T13:27:33 Z	adlet	Chessboard (IZhO18_chessboard)	C++17	70 / 100	468 ms	2284 KB

chessboard

#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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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	-

답안 #90129

Compilation message

Subtask #1 8.0 / 8.0

Subtask #2 8.0 / 8.0

Subtask #3 15.0 / 15.0

Subtask #4 16.0 / 16.0

Subtask #5 23.0 / 23.0

Subtask #6 0 / 30.0

Subtask #1
8.0 / 8.0

Subtask #2
8.0 / 8.0

Subtask #3
15.0 / 15.0

Subtask #4
16.0 / 16.0

Subtask #5
23.0 / 23.0

Subtask #6
0 / 30.0