답안 #80973 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
80973	2018-10-23T10:25:53 Z	inom	Chessboard (IZhO18_chessboard)	C++14	70 / 100	748 ms	61344 KB

chessboard

#include <bits/stdc++.h>
 
#define fi first
#define se second
#define pb push_back
#define int long long
#define sz(c) (int)(c).size()
#define all(c) (c).begin(), (c).end()
#define in freopen("A.in", "r", stdin);
#define out freopen("A.out", "w", stdout);

using namespace std;
  
const int N = 500500;
const int INF = 1e15;

int TN = 1;

int n, k, ans = INF;
pair<int, int> a[N];

int get(int a, int b, int c) {
    a--; b--;
    a /= c; b /= c;
    a++; b++;
    return a + b;
}

int calc(int x) {
    if (x == n) {
        return INF;
    }
    // если первая фигня должна быть белой;
    int res = (((n / x) * (n / x)) / 2) * x * x;
    for (int i = 1; i <= k; i++) {
        if (get(a[i].fi, a[i].se, x) % 2 == 0) {
            res++;
        }
        else {
            res--;
        }
    }
    // иначе;
    int tmp = (((n / x) * (n / x)) / 2 + (n / x) % 2) * x * x;
    for (int i = 1; i <= k; i++) {
        if (get(a[i].fi, a[i].se, x) % 2 == 0) {
            tmp--;
        }
        else {
            tmp++;
        }
    }
    return min(res, tmp);
}

void solve() {
    cin >> n >> k;
    for (int i = 1; i <= k; i++) {
        cin >> a[i].fi >> a[i].se >> a[i].fi >> a[i].se;
    }
    for (int i = 1; i * i <= n; i++) {
        if (n % i == 0) {
            if (i * i == n) {
                ans = min(ans, calc(i));
            }
            else {
                ans = min(ans, calc(i));
                ans = min(ans, calc(n / i));
            }
        }
    }
    cout << ans << "\n";
    return;
}

signed main() {
    // ios_base::sync_with_stdio(0);
    // in; out; // cin >> TN;
    while (TN--) solve();
    return 0;
 }

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	376 KB	Output is correct
3	Correct	2 ms	616 KB	Output is correct
4	Correct	2 ms	688 KB	Output is correct
5	Correct	2 ms	688 KB	Output is correct
6	Correct	2 ms	688 KB	Output is correct
7	Correct	2 ms	688 KB	Output is correct
8	Correct	2 ms	688 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	97 ms	3180 KB	Output is correct
2	Correct	33 ms	3180 KB	Output is correct
3	Correct	64 ms	4008 KB	Output is correct
4	Correct	57 ms	5152 KB	Output is correct
5	Correct	87 ms	6532 KB	Output is correct
6	Correct	55 ms	6972 KB	Output is correct
7	Correct	16 ms	6972 KB	Output is correct
8	Correct	50 ms	7976 KB	Output is correct
9	Correct	137 ms	11104 KB	Output is correct
10	Correct	77 ms	11444 KB	Output is correct

Subtask #3
15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	11444 KB	Output is correct
2	Correct	2 ms	11444 KB	Output is correct
3	Correct	3 ms	11444 KB	Output is correct
4	Correct	5 ms	11444 KB	Output is correct
5	Correct	3 ms	11444 KB	Output is correct
6	Correct	3 ms	11444 KB	Output is correct
7	Correct	3 ms	11444 KB	Output is correct
8	Correct	3 ms	11444 KB	Output is correct
9	Correct	2 ms	11444 KB	Output is correct
10	Correct	2 ms	11444 KB	Output is correct
11	Correct	2 ms	11444 KB	Output is correct
12	Correct	2 ms	11444 KB	Output is correct
13	Correct	3 ms	11444 KB	Output is correct
14	Correct	3 ms	11444 KB	Output is correct
15	Correct	3 ms	11444 KB	Output is correct

Subtask #4
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	11444 KB	Output is correct
2	Correct	2 ms	11444 KB	Output is correct
3	Correct	3 ms	11444 KB	Output is correct
4	Correct	5 ms	11444 KB	Output is correct
5	Correct	3 ms	11444 KB	Output is correct
6	Correct	3 ms	11444 KB	Output is correct
7	Correct	3 ms	11444 KB	Output is correct
8	Correct	3 ms	11444 KB	Output is correct
9	Correct	2 ms	11444 KB	Output is correct
10	Correct	2 ms	11444 KB	Output is correct
11	Correct	2 ms	11444 KB	Output is correct
12	Correct	2 ms	11444 KB	Output is correct
13	Correct	3 ms	11444 KB	Output is correct
14	Correct	3 ms	11444 KB	Output is correct
15	Correct	3 ms	11444 KB	Output is correct
16	Correct	33 ms	11868 KB	Output is correct
17	Correct	96 ms	13980 KB	Output is correct
18	Correct	129 ms	15948 KB	Output is correct
19	Correct	205 ms	17092 KB	Output is correct
20	Correct	230 ms	18900 KB	Output is correct
21	Correct	98 ms	19984 KB	Output is correct
22	Correct	3 ms	19984 KB	Output is correct
23	Correct	59 ms	20024 KB	Output is correct
24	Correct	105 ms	22248 KB	Output is correct
25	Correct	13 ms	22248 KB	Output is correct
26	Correct	70 ms	22800 KB	Output is correct
27	Correct	94 ms	24012 KB	Output is correct
28	Correct	117 ms	26008 KB	Output is correct
29	Correct	37 ms	26008 KB	Output is correct
30	Correct	5 ms	26008 KB	Output is correct

Subtask #5
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	97 ms	3180 KB	Output is correct
2	Correct	33 ms	3180 KB	Output is correct
3	Correct	64 ms	4008 KB	Output is correct
4	Correct	57 ms	5152 KB	Output is correct
5	Correct	87 ms	6532 KB	Output is correct
6	Correct	55 ms	6972 KB	Output is correct
7	Correct	16 ms	6972 KB	Output is correct
8	Correct	50 ms	7976 KB	Output is correct
9	Correct	137 ms	11104 KB	Output is correct
10	Correct	77 ms	11444 KB	Output is correct
11	Correct	2 ms	11444 KB	Output is correct
12	Correct	2 ms	11444 KB	Output is correct
13	Correct	3 ms	11444 KB	Output is correct
14	Correct	5 ms	11444 KB	Output is correct
15	Correct	3 ms	11444 KB	Output is correct
16	Correct	3 ms	11444 KB	Output is correct
17	Correct	3 ms	11444 KB	Output is correct
18	Correct	3 ms	11444 KB	Output is correct
19	Correct	2 ms	11444 KB	Output is correct
20	Correct	2 ms	11444 KB	Output is correct
21	Correct	2 ms	11444 KB	Output is correct
22	Correct	2 ms	11444 KB	Output is correct
23	Correct	3 ms	11444 KB	Output is correct
24	Correct	3 ms	11444 KB	Output is correct
25	Correct	3 ms	11444 KB	Output is correct
26	Correct	33 ms	11868 KB	Output is correct
27	Correct	96 ms	13980 KB	Output is correct
28	Correct	129 ms	15948 KB	Output is correct
29	Correct	205 ms	17092 KB	Output is correct
30	Correct	230 ms	18900 KB	Output is correct
31	Correct	98 ms	19984 KB	Output is correct
32	Correct	3 ms	19984 KB	Output is correct
33	Correct	59 ms	20024 KB	Output is correct
34	Correct	105 ms	22248 KB	Output is correct
35	Correct	13 ms	22248 KB	Output is correct
36	Correct	70 ms	22800 KB	Output is correct
37	Correct	94 ms	24012 KB	Output is correct
38	Correct	117 ms	26008 KB	Output is correct
39	Correct	37 ms	26008 KB	Output is correct
40	Correct	5 ms	26008 KB	Output is correct
41	Correct	206 ms	28496 KB	Output is correct
42	Correct	147 ms	30820 KB	Output is correct
43	Correct	161 ms	32796 KB	Output is correct
44	Correct	150 ms	35156 KB	Output is correct
45	Correct	149 ms	37468 KB	Output is correct
46	Correct	227 ms	39576 KB	Output is correct
47	Correct	125 ms	41824 KB	Output is correct
48	Correct	154 ms	43744 KB	Output is correct
49	Correct	133 ms	45812 KB	Output is correct
50	Correct	687 ms	48004 KB	Output is correct
51	Correct	742 ms	50556 KB	Output is correct
52	Correct	674 ms	52536 KB	Output is correct
53	Correct	737 ms	54892 KB	Output is correct
54	Correct	658 ms	56788 KB	Output is correct
55	Correct	748 ms	59492 KB	Output is correct
56	Correct	643 ms	61344 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	376 KB	Output is correct
3	Correct	2 ms	616 KB	Output is correct
4	Correct	2 ms	688 KB	Output is correct
5	Correct	2 ms	688 KB	Output is correct
6	Correct	2 ms	688 KB	Output is correct
7	Correct	2 ms	688 KB	Output is correct
8	Correct	2 ms	688 KB	Output is correct
9	Correct	97 ms	3180 KB	Output is correct
10	Correct	33 ms	3180 KB	Output is correct
11	Correct	64 ms	4008 KB	Output is correct
12	Correct	57 ms	5152 KB	Output is correct
13	Correct	87 ms	6532 KB	Output is correct
14	Correct	55 ms	6972 KB	Output is correct
15	Correct	16 ms	6972 KB	Output is correct
16	Correct	50 ms	7976 KB	Output is correct
17	Correct	137 ms	11104 KB	Output is correct
18	Correct	77 ms	11444 KB	Output is correct
19	Correct	2 ms	11444 KB	Output is correct
20	Correct	2 ms	11444 KB	Output is correct
21	Correct	3 ms	11444 KB	Output is correct
22	Correct	5 ms	11444 KB	Output is correct
23	Correct	3 ms	11444 KB	Output is correct
24	Correct	3 ms	11444 KB	Output is correct
25	Correct	3 ms	11444 KB	Output is correct
26	Correct	3 ms	11444 KB	Output is correct
27	Correct	2 ms	11444 KB	Output is correct
28	Correct	2 ms	11444 KB	Output is correct
29	Correct	2 ms	11444 KB	Output is correct
30	Correct	2 ms	11444 KB	Output is correct
31	Correct	3 ms	11444 KB	Output is correct
32	Correct	3 ms	11444 KB	Output is correct
33	Correct	3 ms	11444 KB	Output is correct
34	Correct	33 ms	11868 KB	Output is correct
35	Correct	96 ms	13980 KB	Output is correct
36	Correct	129 ms	15948 KB	Output is correct
37	Correct	205 ms	17092 KB	Output is correct
38	Correct	230 ms	18900 KB	Output is correct
39	Correct	98 ms	19984 KB	Output is correct
40	Correct	3 ms	19984 KB	Output is correct
41	Correct	59 ms	20024 KB	Output is correct
42	Correct	105 ms	22248 KB	Output is correct
43	Correct	13 ms	22248 KB	Output is correct
44	Correct	70 ms	22800 KB	Output is correct
45	Correct	94 ms	24012 KB	Output is correct
46	Correct	117 ms	26008 KB	Output is correct
47	Correct	37 ms	26008 KB	Output is correct
48	Correct	5 ms	26008 KB	Output is correct
49	Correct	206 ms	28496 KB	Output is correct
50	Correct	147 ms	30820 KB	Output is correct
51	Correct	161 ms	32796 KB	Output is correct
52	Correct	150 ms	35156 KB	Output is correct
53	Correct	149 ms	37468 KB	Output is correct
54	Correct	227 ms	39576 KB	Output is correct
55	Correct	125 ms	41824 KB	Output is correct
56	Correct	154 ms	43744 KB	Output is correct
57	Correct	133 ms	45812 KB	Output is correct
58	Correct	687 ms	48004 KB	Output is correct
59	Correct	742 ms	50556 KB	Output is correct
60	Correct	674 ms	52536 KB	Output is correct
61	Correct	737 ms	54892 KB	Output is correct
62	Correct	658 ms	56788 KB	Output is correct
63	Correct	748 ms	59492 KB	Output is correct
64	Correct	643 ms	61344 KB	Output is correct
65	Correct	2 ms	61344 KB	Output is correct
66	Incorrect	2 ms	61344 KB	Output isn't correct
67	Halted	0 ms	0 KB	-

답안 #80973

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