func_code_string: #include <bits/stdc++.h>   using namespace std;   int N, M, T;   char str[1005];   int main() {     int i, j, k;     scanf( %d , &N);     scanf( %s , str);     for (i = 0; i < N; i++)       if (str[i] ==  H ) M++;     int Mc = 1005;     k = 0;     for (i = 0; i < M; i++)       if (str[i] !=  H ) k++;     int st = 0;     if (k < Mc) Mc = k;     for (i = M; i < N; i++) {       if (str[st] !=  H ) k--;       st++;       if (str[i] !=  H ) k++;       if (k < Mc) Mc = k;     }     M = 0;     for (i = 0; i < N; i++)       if (str[i] ==  T ) M++;     k = 0;     for (i = 0; i < M; i++)       if (str[i] ==  H ) k++;     st = 0;     if (k < Mc) Mc = k;     for (i = M; i < N; i++) {       if (str[st] ==  H ) k--;       st++;       if (str[i] ==  H ) k++;       if (k < Mc) Mc = k;     }     printf( %d n , Mc);     scanf(   );   }   