#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pii> vpi;
typedef vector<pll> vpl;
#define pb push_back
#define popb pop_back
#define all(x) (x).begin(), (x).end()
#define ff first
#define ss second
const int nax = 4e5 + 4;
int n;
int col[nax];
int32_t main()
{
ios::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
cin >> n;
vi perm, ot;
for(int i = 0 ; i < 2 * n ; i++)
{
char c; cin >> c;
if(c == 'B')
col[i] = 1;
if(col[i])
perm.pb(i);
else
ot.pb(i);
}
int ans = 0 ;
for(int shift = 0 ; shift < n ; shift ++ )
{
vpi inter;
int rep = 0 ;
for(int i = 0 ; i < n; i++)
inter.pb({min(ot[i], perm[(i+shift)%n]), max(ot[i], perm[(i+shift)%n])});
for(int i = 0 ; i < n - 1;i ++)
{
for(int j= i + 1; j < n; j ++)
{
int a = inter[i].ff;
int b = inter[i].ss;
int c = inter[j].ff;
int d= inter[j].ss;
if(c < a && b < d)
continue;
if(a < c && d < b)
continue;
if(d < a)
continue;
if(b < c)
continue;
rep ++;
}
}
ans = max(ans ,rep);
}
cout << ans;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
1 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 |
0 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 |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
0 ms |
212 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
1 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 |
0 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 |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
0 ms |
212 KB |
Output is correct |
14 |
Correct |
25 ms |
340 KB |
Output is correct |
15 |
Correct |
25 ms |
344 KB |
Output is correct |
16 |
Correct |
32 ms |
340 KB |
Output is correct |
17 |
Correct |
24 ms |
348 KB |
Output is correct |
18 |
Correct |
24 ms |
212 KB |
Output is correct |
19 |
Correct |
20 ms |
336 KB |
Output is correct |
20 |
Correct |
21 ms |
340 KB |
Output is correct |
21 |
Correct |
17 ms |
340 KB |
Output is correct |
22 |
Correct |
18 ms |
336 KB |
Output is correct |
23 |
Correct |
7 ms |
332 KB |
Output is correct |
24 |
Correct |
15 ms |
344 KB |
Output is correct |
25 |
Correct |
15 ms |
336 KB |
Output is correct |
26 |
Correct |
19 ms |
336 KB |
Output is correct |
27 |
Correct |
20 ms |
340 KB |
Output is correct |
28 |
Correct |
22 ms |
340 KB |
Output is correct |
29 |
Correct |
19 ms |
340 KB |
Output is correct |
30 |
Correct |
18 ms |
344 KB |
Output is correct |
31 |
Correct |
21 ms |
336 KB |
Output is correct |
32 |
Correct |
25 ms |
212 KB |
Output is correct |
33 |
Correct |
24 ms |
344 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
1 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 |
0 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 |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
0 ms |
212 KB |
Output is correct |
14 |
Correct |
25 ms |
340 KB |
Output is correct |
15 |
Correct |
25 ms |
344 KB |
Output is correct |
16 |
Correct |
32 ms |
340 KB |
Output is correct |
17 |
Correct |
24 ms |
348 KB |
Output is correct |
18 |
Correct |
24 ms |
212 KB |
Output is correct |
19 |
Correct |
20 ms |
336 KB |
Output is correct |
20 |
Correct |
21 ms |
340 KB |
Output is correct |
21 |
Correct |
17 ms |
340 KB |
Output is correct |
22 |
Correct |
18 ms |
336 KB |
Output is correct |
23 |
Correct |
7 ms |
332 KB |
Output is correct |
24 |
Correct |
15 ms |
344 KB |
Output is correct |
25 |
Correct |
15 ms |
336 KB |
Output is correct |
26 |
Correct |
19 ms |
336 KB |
Output is correct |
27 |
Correct |
20 ms |
340 KB |
Output is correct |
28 |
Correct |
22 ms |
340 KB |
Output is correct |
29 |
Correct |
19 ms |
340 KB |
Output is correct |
30 |
Correct |
18 ms |
344 KB |
Output is correct |
31 |
Correct |
21 ms |
336 KB |
Output is correct |
32 |
Correct |
25 ms |
212 KB |
Output is correct |
33 |
Correct |
24 ms |
344 KB |
Output is correct |
34 |
Execution timed out |
2072 ms |
340 KB |
Time limit exceeded |
35 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
1 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 |
0 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 |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
0 ms |
212 KB |
Output is correct |
14 |
Correct |
25 ms |
340 KB |
Output is correct |
15 |
Correct |
25 ms |
344 KB |
Output is correct |
16 |
Correct |
32 ms |
340 KB |
Output is correct |
17 |
Correct |
24 ms |
348 KB |
Output is correct |
18 |
Correct |
24 ms |
212 KB |
Output is correct |
19 |
Correct |
20 ms |
336 KB |
Output is correct |
20 |
Correct |
21 ms |
340 KB |
Output is correct |
21 |
Correct |
17 ms |
340 KB |
Output is correct |
22 |
Correct |
18 ms |
336 KB |
Output is correct |
23 |
Correct |
7 ms |
332 KB |
Output is correct |
24 |
Correct |
15 ms |
344 KB |
Output is correct |
25 |
Correct |
15 ms |
336 KB |
Output is correct |
26 |
Correct |
19 ms |
336 KB |
Output is correct |
27 |
Correct |
20 ms |
340 KB |
Output is correct |
28 |
Correct |
22 ms |
340 KB |
Output is correct |
29 |
Correct |
19 ms |
340 KB |
Output is correct |
30 |
Correct |
18 ms |
344 KB |
Output is correct |
31 |
Correct |
21 ms |
336 KB |
Output is correct |
32 |
Correct |
25 ms |
212 KB |
Output is correct |
33 |
Correct |
24 ms |
344 KB |
Output is correct |
34 |
Execution timed out |
2072 ms |
340 KB |
Time limit exceeded |
35 |
Halted |
0 ms |
0 KB |
- |