#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
using pi = pair<pair<int, int>, pair<int, int>>;
#define ff first
#define ss second
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define lb lower_bound
#define int ll
int N; string S;
vector<int> A, B;
int32_t main() {
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> N >> S; int res = 0;
for(int l = 0; l < 2 * N; l++) {
if(S[l] == 'B') A.push_back(l);
if(S[l] == 'W') B.push_back(l);
}
for(int l = 0; l < N; l++) {
vector<pair<int, int>> P;
for(int i = 0; i < N; i++)
P.push_back({min(A[i], B[(i + l) % N]), max(A[i], B[(i + l) % N])});
int ans = 0;
for(int i = 0; i < N; i++) {
for(int j = i + 1; j < N; j++) {
int U = P[i].first, V = P[i].second;
int X = P[j].first, Y = P[j].second;
if(V < X) continue;
if(Y < U) continue;
if(U > X && V < Y) continue;
if(X > U && Y < V) continue;
ans++;
}
}
res = max(res, ans);
}
cout << res << "\n";
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
316 KB |
Output is correct |
6 |
Correct |
0 ms |
320 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 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 |
1 ms |
212 KB |
Output is correct |
12 |
Correct |
1 ms |
324 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
316 KB |
Output is correct |
6 |
Correct |
0 ms |
320 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 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 |
1 ms |
212 KB |
Output is correct |
12 |
Correct |
1 ms |
324 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
18 ms |
340 KB |
Output is correct |
15 |
Correct |
18 ms |
340 KB |
Output is correct |
16 |
Correct |
17 ms |
356 KB |
Output is correct |
17 |
Correct |
18 ms |
324 KB |
Output is correct |
18 |
Correct |
12 ms |
340 KB |
Output is correct |
19 |
Correct |
14 ms |
324 KB |
Output is correct |
20 |
Correct |
14 ms |
340 KB |
Output is correct |
21 |
Correct |
15 ms |
340 KB |
Output is correct |
22 |
Correct |
14 ms |
324 KB |
Output is correct |
23 |
Correct |
6 ms |
216 KB |
Output is correct |
24 |
Correct |
16 ms |
348 KB |
Output is correct |
25 |
Correct |
10 ms |
340 KB |
Output is correct |
26 |
Correct |
21 ms |
348 KB |
Output is correct |
27 |
Correct |
16 ms |
344 KB |
Output is correct |
28 |
Correct |
29 ms |
328 KB |
Output is correct |
29 |
Correct |
12 ms |
344 KB |
Output is correct |
30 |
Correct |
11 ms |
324 KB |
Output is correct |
31 |
Correct |
19 ms |
340 KB |
Output is correct |
32 |
Correct |
26 ms |
324 KB |
Output is correct |
33 |
Correct |
17 ms |
352 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
316 KB |
Output is correct |
6 |
Correct |
0 ms |
320 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 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 |
1 ms |
212 KB |
Output is correct |
12 |
Correct |
1 ms |
324 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
18 ms |
340 KB |
Output is correct |
15 |
Correct |
18 ms |
340 KB |
Output is correct |
16 |
Correct |
17 ms |
356 KB |
Output is correct |
17 |
Correct |
18 ms |
324 KB |
Output is correct |
18 |
Correct |
12 ms |
340 KB |
Output is correct |
19 |
Correct |
14 ms |
324 KB |
Output is correct |
20 |
Correct |
14 ms |
340 KB |
Output is correct |
21 |
Correct |
15 ms |
340 KB |
Output is correct |
22 |
Correct |
14 ms |
324 KB |
Output is correct |
23 |
Correct |
6 ms |
216 KB |
Output is correct |
24 |
Correct |
16 ms |
348 KB |
Output is correct |
25 |
Correct |
10 ms |
340 KB |
Output is correct |
26 |
Correct |
21 ms |
348 KB |
Output is correct |
27 |
Correct |
16 ms |
344 KB |
Output is correct |
28 |
Correct |
29 ms |
328 KB |
Output is correct |
29 |
Correct |
12 ms |
344 KB |
Output is correct |
30 |
Correct |
11 ms |
324 KB |
Output is correct |
31 |
Correct |
19 ms |
340 KB |
Output is correct |
32 |
Correct |
26 ms |
324 KB |
Output is correct |
33 |
Correct |
17 ms |
352 KB |
Output is correct |
34 |
Execution timed out |
2023 ms |
340 KB |
Time limit exceeded |
35 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
316 KB |
Output is correct |
6 |
Correct |
0 ms |
320 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 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 |
1 ms |
212 KB |
Output is correct |
12 |
Correct |
1 ms |
324 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
18 ms |
340 KB |
Output is correct |
15 |
Correct |
18 ms |
340 KB |
Output is correct |
16 |
Correct |
17 ms |
356 KB |
Output is correct |
17 |
Correct |
18 ms |
324 KB |
Output is correct |
18 |
Correct |
12 ms |
340 KB |
Output is correct |
19 |
Correct |
14 ms |
324 KB |
Output is correct |
20 |
Correct |
14 ms |
340 KB |
Output is correct |
21 |
Correct |
15 ms |
340 KB |
Output is correct |
22 |
Correct |
14 ms |
324 KB |
Output is correct |
23 |
Correct |
6 ms |
216 KB |
Output is correct |
24 |
Correct |
16 ms |
348 KB |
Output is correct |
25 |
Correct |
10 ms |
340 KB |
Output is correct |
26 |
Correct |
21 ms |
348 KB |
Output is correct |
27 |
Correct |
16 ms |
344 KB |
Output is correct |
28 |
Correct |
29 ms |
328 KB |
Output is correct |
29 |
Correct |
12 ms |
344 KB |
Output is correct |
30 |
Correct |
11 ms |
324 KB |
Output is correct |
31 |
Correct |
19 ms |
340 KB |
Output is correct |
32 |
Correct |
26 ms |
324 KB |
Output is correct |
33 |
Correct |
17 ms |
352 KB |
Output is correct |
34 |
Execution timed out |
2023 ms |
340 KB |
Time limit exceeded |
35 |
Halted |
0 ms |
0 KB |
- |