#include <bits/stdc++.h>
#define MAXN 500007
using namespace std;
string s;
char c[MAXN];
int val[MAXN],sol[MAXN],a[MAXN];
int main()
{
int n,q;
cin>>n>>s>>q;
for(int i=0;i<q;i++)
{
int l,r;
cin>>l>>r;
int m=r-l+1,sum=0,t=0,mi=0;
for(int i=l;i<=r;i++) a[i-l]=s[i-1]=='T'?-1:1;
for(int i=0;i<m;i++)
{
sum+=a[i];
if(sum<0) {sum=0; a[i]=0; t++;}
}
sum=0;
for(int i=m-1;i>=0;i--)
{
sum+=a[i];
mi=min(mi,sum);
}
cout<<t-mi<<endl;
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
14 ms |
376 KB |
Output is correct |
2 |
Correct |
9 ms |
456 KB |
Output is correct |
3 |
Correct |
14 ms |
456 KB |
Output is correct |
4 |
Correct |
10 ms |
472 KB |
Output is correct |
5 |
Correct |
10 ms |
540 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
14 ms |
376 KB |
Output is correct |
2 |
Correct |
9 ms |
456 KB |
Output is correct |
3 |
Correct |
14 ms |
456 KB |
Output is correct |
4 |
Correct |
10 ms |
472 KB |
Output is correct |
5 |
Correct |
10 ms |
540 KB |
Output is correct |
6 |
Execution timed out |
3044 ms |
2000 KB |
Time limit exceeded |
7 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
14 ms |
376 KB |
Output is correct |
2 |
Correct |
9 ms |
456 KB |
Output is correct |
3 |
Correct |
14 ms |
456 KB |
Output is correct |
4 |
Correct |
10 ms |
472 KB |
Output is correct |
5 |
Correct |
10 ms |
540 KB |
Output is correct |
6 |
Execution timed out |
3044 ms |
2000 KB |
Time limit exceeded |
7 |
Halted |
0 ms |
0 KB |
- |