1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
#include <iostream>

using namespace std;

int main() {

  int n;
  cin >> n;

  string tests;
  cin >> tests;

  int result = 0;
  int passed_in_group = 0;
  int group_size = n / 10;

  for (int i = 0; i < n; i++) {
    if (tests[i] == 'T') {
      passed_in_group++;
    }

    if (i > 0 && i % group_size == group_size - 1) {
      if (passed_in_group == group_size) {
        result++;
      }
      passed_in_group = 0;
    }
  }

  cout << result << endl;

  return  0;
}