답안 #683931

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
683931	2023-01-19T16:49:35 Z	abc864197532	Monochrome Points (JOI20_monochrome)	C++17	35 / 100	1951 ms	3040 KB

monochrome

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define pii pair<int,int>
#define all(x) x.begin(), x.end()

int main() {
	srand(time(NULL));
	ios::sync_with_stdio(false), cin.tie(0);
	double T = clock();
	int n;
	string s;
	cin >> n >> s;
	vector <pii> a;
	for (int i = 0; i < n; ++i) {
		if (s[i] == s[i + n]) {
			a.emplace_back(i, s[i] == 'B' ? 1 : 0);
		}
	}
	int m = a.size();
	ll ans = 1ll << 60;
	if (!m) {
		cout << 1ll * n * (n - 1) / 2 << '\n';
		return 0;
	}
	if (m <= 5000) {
		for (int rt = 0; rt < m; ++rt) {
			vector <pii> stk;
			ll cur = 0;
			for (int i = 0; i < m; ++i) {
				auto [x, id] = a[(i + rt) % m];
				if (!stk.empty() && stk.back().second != id) {
					int p = stk.back().first; stk.pop_back();
					int len = abs(p - x);
					cur += min(len, n - len);
				} else {
					stk.emplace_back(x, id);
				}
			}
			ans = min(ans, cur);
		}
	} else {
		while ((clock() - T) / CLOCKS_PER_SEC <= 1.95) {
			int rt = rand() % m;
			vector <pii> stk;
			ll cur = 0;
			for (int i = 0; i < m; ++i) {
				auto [x, id] = a[(i + rt) % m];
				if (!stk.empty() && stk.back().second != id) {
					int p = stk.back().first; stk.pop_back();
					int len = abs(p - x);
					cur += min(len, n - len);
				} else {
					stk.emplace_back(x, id);
				}
			}
			ans = min(ans, cur);
		}
	}
	cout << 1ll * n * (n - 1) / 2 - ans << '\n';
}

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct

Subtask #2
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	212 KB	Output is correct
17	Correct	1 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	1 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	0 ms	212 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	0 ms	212 KB	Output is correct
27	Correct	0 ms	212 KB	Output is correct
28	Correct	0 ms	212 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	1 ms	212 KB	Output is correct
31	Correct	0 ms	212 KB	Output is correct
32	Correct	0 ms	212 KB	Output is correct
33	Correct	1 ms	212 KB	Output is correct

Subtask #3
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	212 KB	Output is correct
17	Correct	1 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	1 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	0 ms	212 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	0 ms	212 KB	Output is correct
27	Correct	0 ms	212 KB	Output is correct
28	Correct	0 ms	212 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	1 ms	212 KB	Output is correct
31	Correct	0 ms	212 KB	Output is correct
32	Correct	0 ms	212 KB	Output is correct
33	Correct	1 ms	212 KB	Output is correct
34	Correct	7 ms	340 KB	Output is correct
35	Correct	6 ms	340 KB	Output is correct
36	Correct	5 ms	340 KB	Output is correct
37	Correct	6 ms	212 KB	Output is correct
38	Correct	0 ms	212 KB	Output is correct
39	Correct	7 ms	212 KB	Output is correct
40	Correct	15 ms	352 KB	Output is correct
41	Correct	6 ms	340 KB	Output is correct
42	Correct	6 ms	340 KB	Output is correct
43	Correct	5 ms	340 KB	Output is correct
44	Correct	16 ms	340 KB	Output is correct
45	Correct	1 ms	212 KB	Output is correct
46	Correct	0 ms	212 KB	Output is correct
47	Correct	1 ms	212 KB	Output is correct
48	Correct	6 ms	212 KB	Output is correct
49	Correct	6 ms	340 KB	Output is correct
50	Correct	0 ms	212 KB	Output is correct
51	Correct	0 ms	212 KB	Output is correct
52	Correct	20 ms	356 KB	Output is correct

Subtask #4
0.0 / 65.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	212 KB	Output is correct
17	Correct	1 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	1 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	0 ms	212 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	0 ms	212 KB	Output is correct
27	Correct	0 ms	212 KB	Output is correct
28	Correct	0 ms	212 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	1 ms	212 KB	Output is correct
31	Correct	0 ms	212 KB	Output is correct
32	Correct	0 ms	212 KB	Output is correct
33	Correct	1 ms	212 KB	Output is correct
34	Correct	7 ms	340 KB	Output is correct
35	Correct	6 ms	340 KB	Output is correct
36	Correct	5 ms	340 KB	Output is correct
37	Correct	6 ms	212 KB	Output is correct
38	Correct	0 ms	212 KB	Output is correct
39	Correct	7 ms	212 KB	Output is correct
40	Correct	15 ms	352 KB	Output is correct
41	Correct	6 ms	340 KB	Output is correct
42	Correct	6 ms	340 KB	Output is correct
43	Correct	5 ms	340 KB	Output is correct
44	Correct	16 ms	340 KB	Output is correct
45	Correct	1 ms	212 KB	Output is correct
46	Correct	0 ms	212 KB	Output is correct
47	Correct	1 ms	212 KB	Output is correct
48	Correct	6 ms	212 KB	Output is correct
49	Correct	6 ms	340 KB	Output is correct
50	Correct	0 ms	212 KB	Output is correct
51	Correct	0 ms	212 KB	Output is correct
52	Correct	20 ms	356 KB	Output is correct
53	Correct	1951 ms	1892 KB	Output is correct
54	Correct	1951 ms	1892 KB	Output is correct
55	Correct	1951 ms	1952 KB	Output is correct
56	Correct	1951 ms	1892 KB	Output is correct
57	Correct	1 ms	864 KB	Output is correct
58	Incorrect	1951 ms	3040 KB	Output isn't correct
59	Halted	0 ms	0 KB	-

답안 #683931

Compilation message

Subtask #1 4.0 / 4.0

Subtask #2 21.0 / 21.0

Subtask #3 10.0 / 10.0

Subtask #4 0.0 / 65.0

Subtask #1
4.0 / 4.0

Subtask #2
21.0 / 21.0

Subtask #3
10.0 / 10.0

Subtask #4
0.0 / 65.0