func_code_string: #include <bits/stdc++.h>   int main() {     int n, k;     scanf( %d %d , &n, &k);     char a[n];     scanf( %s , a);     int i, start, end;     for (i = 0; i < n; i++) {       if (a[i] ==  G ) start = i;       if (a[i] ==  T ) end = i;     }     int sign = start - end;     if (start > end) k = -k;     while ((sign * (start - end)) > 0) {       start = start + k;       if (a[start] ==  # ) {         printf( NO );         break;       }       if (a[start] ==  T ) {         printf( YES );         break;       }     }     if (((sign * (start - end)) < 0) && (a[start] !=  # )) printf( NO );     return 0;   }   