답안 #41573 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
41573	2018-02-19T09:19:57 Z	cheater2k	Chessboard (IZhO18_chessboard)	C++14	100 / 100	1863 ms	2288 KB

chessboard

#include <bits/stdc++.h>
using namespace std;

const int N = 1e5 + 5;

int n, k, nrec;
int lx[N], ly[N], rx[N], ry[N];
long long ans = 1e18;

int get(int t, int l, int r) {
    // count the number of x such that l <= x <= r and (x / k) % 2 == t
    if (l / k == r / k) {
        if ((l / k) % 2 == t) return r - l + 1; else return 0;
    }
    int ret = 0;

    if ((l / k) % 2 == t) ret += ((l / k) + 1) * k - l;
    if ((r / k) % 2 == t) ret += r - (r / k) * k + 1;
    
    l = (l / k) + 1;
    r = (r / k) - 1;

    if (l % 2 != t) ++l;
    if (r % 2 != t) --r;
    
    ret += max(0, (r - l) / 2 + 1) * k;

    return ret;
}

void solve() {
    for (int t = 0; t < 2; ++t) {
        int row[2] = {0, 0}, col[2] = {0, 0};
        for (int i = 0; i < 2; ++i) {
            row[i] = get(i, 0, n - 1);
            col[i] = get(i, 0, n - 1);
        }
        // black cells: (x, y) such that (x + y) == t (modulo 2)
        long long cur = 0;
        for (int i = 0; i < 2; ++i) {
            for (int j = 0; j < 2; ++j) if ((i + j) % 2 == t) {
                cur += 1LL * row[i] * col[j];
            }
        }
        for (int rec = 1; rec <= nrec; ++rec) {
            for (int i = 0; i < 2; ++i) {
                row[i] = get(i, lx[rec], rx[rec]);
                col[i] = get(i, ly[rec], ry[rec]);
            }
            for (int i = 0; i < 2; ++i) {
                for (int j = 0; j < 2; ++j) {
                    if ((i + j) % 2 == t) cur -= 1LL * row[i] * col[j];
                    else cur += 1LL * row[i] * col[j];
                }
            }
        }
        ans = min(ans, cur);
    }
}

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> n >> nrec;
    for (int i = 1; i <= nrec; ++i) {
        cin >> lx[i] >> ly[i] >> rx[i] >> ry[i];
        --lx[i]; --ly[i]; --rx[i]; --ry[i];
    }
    for (k = 1; k < n; ++k) if (n % k == 0) {
        solve();
    }
    cout << ans << endl;
}

Subtask #1
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	248 KB	Output is correct
2	Correct	2 ms	352 KB	Output is correct
3	Correct	2 ms	424 KB	Output is correct
4	Correct	1 ms	460 KB	Output is correct
5	Correct	2 ms	604 KB	Output is correct
6	Correct	2 ms	604 KB	Output is correct
7	Correct	2 ms	604 KB	Output is correct
8	Correct	2 ms	604 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	34 ms	1444 KB	Output is correct
2	Correct	10 ms	1444 KB	Output is correct
3	Correct	25 ms	1444 KB	Output is correct
4	Correct	25 ms	1444 KB	Output is correct
5	Correct	33 ms	1444 KB	Output is correct
6	Correct	20 ms	1444 KB	Output is correct
7	Correct	7 ms	1444 KB	Output is correct
8	Correct	19 ms	1444 KB	Output is correct
9	Correct	49 ms	1932 KB	Output is correct
10	Correct	30 ms	1932 KB	Output is correct

Subtask #3
15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	1932 KB	Output is correct
2	Correct	2 ms	1932 KB	Output is correct
3	Correct	2 ms	1932 KB	Output is correct
4	Correct	3 ms	1932 KB	Output is correct
5	Correct	2 ms	1932 KB	Output is correct
6	Correct	2 ms	1932 KB	Output is correct
7	Correct	2 ms	1932 KB	Output is correct
8	Correct	2 ms	1932 KB	Output is correct
9	Correct	2 ms	1932 KB	Output is correct
10	Correct	2 ms	1932 KB	Output is correct
11	Correct	2 ms	1932 KB	Output is correct
12	Correct	2 ms	1932 KB	Output is correct
13	Correct	2 ms	1932 KB	Output is correct
14	Correct	4 ms	1932 KB	Output is correct
15	Correct	2 ms	1932 KB	Output is correct

Subtask #4
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	1932 KB	Output is correct
2	Correct	2 ms	1932 KB	Output is correct
3	Correct	2 ms	1932 KB	Output is correct
4	Correct	3 ms	1932 KB	Output is correct
5	Correct	2 ms	1932 KB	Output is correct
6	Correct	2 ms	1932 KB	Output is correct
7	Correct	2 ms	1932 KB	Output is correct
8	Correct	2 ms	1932 KB	Output is correct
9	Correct	2 ms	1932 KB	Output is correct
10	Correct	2 ms	1932 KB	Output is correct
11	Correct	2 ms	1932 KB	Output is correct
12	Correct	2 ms	1932 KB	Output is correct
13	Correct	2 ms	1932 KB	Output is correct
14	Correct	4 ms	1932 KB	Output is correct
15	Correct	2 ms	1932 KB	Output is correct
16	Correct	24 ms	1932 KB	Output is correct
17	Correct	40 ms	1932 KB	Output is correct
18	Correct	98 ms	2156 KB	Output is correct
19	Correct	346 ms	2156 KB	Output is correct
20	Correct	443 ms	2156 KB	Output is correct
21	Correct	42 ms	2156 KB	Output is correct
22	Correct	3 ms	2156 KB	Output is correct
23	Correct	55 ms	2156 KB	Output is correct
24	Correct	65 ms	2156 KB	Output is correct
25	Correct	12 ms	2156 KB	Output is correct
26	Correct	41 ms	2156 KB	Output is correct
27	Correct	70 ms	2156 KB	Output is correct
28	Correct	69 ms	2156 KB	Output is correct
29	Correct	16 ms	2156 KB	Output is correct
30	Correct	4 ms	2156 KB	Output is correct

Subtask #5
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	34 ms	1444 KB	Output is correct
2	Correct	10 ms	1444 KB	Output is correct
3	Correct	25 ms	1444 KB	Output is correct
4	Correct	25 ms	1444 KB	Output is correct
5	Correct	33 ms	1444 KB	Output is correct
6	Correct	20 ms	1444 KB	Output is correct
7	Correct	7 ms	1444 KB	Output is correct
8	Correct	19 ms	1444 KB	Output is correct
9	Correct	49 ms	1932 KB	Output is correct
10	Correct	30 ms	1932 KB	Output is correct
11	Correct	2 ms	1932 KB	Output is correct
12	Correct	2 ms	1932 KB	Output is correct
13	Correct	2 ms	1932 KB	Output is correct
14	Correct	3 ms	1932 KB	Output is correct
15	Correct	2 ms	1932 KB	Output is correct
16	Correct	2 ms	1932 KB	Output is correct
17	Correct	2 ms	1932 KB	Output is correct
18	Correct	2 ms	1932 KB	Output is correct
19	Correct	2 ms	1932 KB	Output is correct
20	Correct	2 ms	1932 KB	Output is correct
21	Correct	2 ms	1932 KB	Output is correct
22	Correct	2 ms	1932 KB	Output is correct
23	Correct	2 ms	1932 KB	Output is correct
24	Correct	4 ms	1932 KB	Output is correct
25	Correct	2 ms	1932 KB	Output is correct
26	Correct	24 ms	1932 KB	Output is correct
27	Correct	40 ms	1932 KB	Output is correct
28	Correct	98 ms	2156 KB	Output is correct
29	Correct	346 ms	2156 KB	Output is correct
30	Correct	443 ms	2156 KB	Output is correct
31	Correct	42 ms	2156 KB	Output is correct
32	Correct	3 ms	2156 KB	Output is correct
33	Correct	55 ms	2156 KB	Output is correct
34	Correct	65 ms	2156 KB	Output is correct
35	Correct	12 ms	2156 KB	Output is correct
36	Correct	41 ms	2156 KB	Output is correct
37	Correct	70 ms	2156 KB	Output is correct
38	Correct	69 ms	2156 KB	Output is correct
39	Correct	16 ms	2156 KB	Output is correct
40	Correct	4 ms	2156 KB	Output is correct
41	Correct	305 ms	2156 KB	Output is correct
42	Correct	72 ms	2156 KB	Output is correct
43	Correct	152 ms	2156 KB	Output is correct
44	Correct	80 ms	2156 KB	Output is correct
45	Correct	52 ms	2156 KB	Output is correct
46	Correct	328 ms	2156 KB	Output is correct
47	Correct	52 ms	2156 KB	Output is correct
48	Correct	123 ms	2156 KB	Output is correct
49	Correct	68 ms	2156 KB	Output is correct
50	Correct	1597 ms	2156 KB	Output is correct
51	Correct	1633 ms	2228 KB	Output is correct
52	Correct	1528 ms	2228 KB	Output is correct
53	Correct	1639 ms	2228 KB	Output is correct
54	Correct	1527 ms	2228 KB	Output is correct
55	Correct	1745 ms	2284 KB	Output is correct
56	Correct	1458 ms	2284 KB	Output is correct

Subtask #6
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	248 KB	Output is correct
2	Correct	2 ms	352 KB	Output is correct
3	Correct	2 ms	424 KB	Output is correct
4	Correct	1 ms	460 KB	Output is correct
5	Correct	2 ms	604 KB	Output is correct
6	Correct	2 ms	604 KB	Output is correct
7	Correct	2 ms	604 KB	Output is correct
8	Correct	2 ms	604 KB	Output is correct
9	Correct	34 ms	1444 KB	Output is correct
10	Correct	10 ms	1444 KB	Output is correct
11	Correct	25 ms	1444 KB	Output is correct
12	Correct	25 ms	1444 KB	Output is correct
13	Correct	33 ms	1444 KB	Output is correct
14	Correct	20 ms	1444 KB	Output is correct
15	Correct	7 ms	1444 KB	Output is correct
16	Correct	19 ms	1444 KB	Output is correct
17	Correct	49 ms	1932 KB	Output is correct
18	Correct	30 ms	1932 KB	Output is correct
19	Correct	2 ms	1932 KB	Output is correct
20	Correct	2 ms	1932 KB	Output is correct
21	Correct	2 ms	1932 KB	Output is correct
22	Correct	3 ms	1932 KB	Output is correct
23	Correct	2 ms	1932 KB	Output is correct
24	Correct	2 ms	1932 KB	Output is correct
25	Correct	2 ms	1932 KB	Output is correct
26	Correct	2 ms	1932 KB	Output is correct
27	Correct	2 ms	1932 KB	Output is correct
28	Correct	2 ms	1932 KB	Output is correct
29	Correct	2 ms	1932 KB	Output is correct
30	Correct	2 ms	1932 KB	Output is correct
31	Correct	2 ms	1932 KB	Output is correct
32	Correct	4 ms	1932 KB	Output is correct
33	Correct	2 ms	1932 KB	Output is correct
34	Correct	24 ms	1932 KB	Output is correct
35	Correct	40 ms	1932 KB	Output is correct
36	Correct	98 ms	2156 KB	Output is correct
37	Correct	346 ms	2156 KB	Output is correct
38	Correct	443 ms	2156 KB	Output is correct
39	Correct	42 ms	2156 KB	Output is correct
40	Correct	3 ms	2156 KB	Output is correct
41	Correct	55 ms	2156 KB	Output is correct
42	Correct	65 ms	2156 KB	Output is correct
43	Correct	12 ms	2156 KB	Output is correct
44	Correct	41 ms	2156 KB	Output is correct
45	Correct	70 ms	2156 KB	Output is correct
46	Correct	69 ms	2156 KB	Output is correct
47	Correct	16 ms	2156 KB	Output is correct
48	Correct	4 ms	2156 KB	Output is correct
49	Correct	305 ms	2156 KB	Output is correct
50	Correct	72 ms	2156 KB	Output is correct
51	Correct	152 ms	2156 KB	Output is correct
52	Correct	80 ms	2156 KB	Output is correct
53	Correct	52 ms	2156 KB	Output is correct
54	Correct	328 ms	2156 KB	Output is correct
55	Correct	52 ms	2156 KB	Output is correct
56	Correct	123 ms	2156 KB	Output is correct
57	Correct	68 ms	2156 KB	Output is correct
58	Correct	1597 ms	2156 KB	Output is correct
59	Correct	1633 ms	2228 KB	Output is correct
60	Correct	1528 ms	2228 KB	Output is correct
61	Correct	1639 ms	2228 KB	Output is correct
62	Correct	1527 ms	2228 KB	Output is correct
63	Correct	1745 ms	2284 KB	Output is correct
64	Correct	1458 ms	2284 KB	Output is correct
65	Correct	1 ms	2284 KB	Output is correct
66	Correct	1 ms	2284 KB	Output is correct
67	Correct	1728 ms	2284 KB	Output is correct
68	Correct	1730 ms	2284 KB	Output is correct
69	Correct	1590 ms	2284 KB	Output is correct
70	Correct	1587 ms	2284 KB	Output is correct
71	Correct	1647 ms	2284 KB	Output is correct
72	Correct	1586 ms	2284 KB	Output is correct
73	Correct	1602 ms	2284 KB	Output is correct
74	Correct	1749 ms	2284 KB	Output is correct
75	Correct	1626 ms	2284 KB	Output is correct
76	Correct	1766 ms	2284 KB	Output is correct
77	Correct	270 ms	2288 KB	Output is correct
78	Correct	81 ms	2288 KB	Output is correct
79	Correct	180 ms	2288 KB	Output is correct
80	Correct	196 ms	2288 KB	Output is correct
81	Correct	173 ms	2288 KB	Output is correct
82	Correct	139 ms	2288 KB	Output is correct
83	Correct	107 ms	2288 KB	Output is correct
84	Correct	1062 ms	2288 KB	Output is correct
85	Correct	1863 ms	2288 KB	Output is correct
86	Correct	4 ms	2288 KB	Output is correct
87	Correct	2 ms	2288 KB	Output is correct
88	Correct	1851 ms	2288 KB	Output is correct
89	Correct	365 ms	2288 KB	Output is correct
90	Correct	2 ms	2288 KB	Output is correct

답안 #41573

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 30.0 / 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
30.0 / 30.0