func_code_string: #include <bits/stdc++.h>   namespace std {   long long abs(long long x) { return x < 0 ? -x : x; }   }  // namespace std   using namespace std;   void dprintf(char* format, ...) {     fprintf(stderr,  DEBUG:  );     va_list argp;     va_start(argp, format);     vfprintf(stderr, format, argp);     va_end(argp);     fprintf(stderr,   n );   }   struct Exception {     const char* message;     const int line;     Exception(const char* m, int l) : message(m), line(l) {}   };   static char stringReader[2097152];   static inline bool ReadLine() {     char* ptr = fgets(stringReader, sizeof(stringReader), stdin);     if (ptr == 0) return false;     int N = strlen(stringReader);     if (stringReader[N - 1] ==   n ) stringReader[N - 1] = 0;     return true;   }   const long long ooLL = 0x3f3f3f3f3f3f3f3fLL;   const int oo = 0x3f3f3f3f;   const double eps = 1e-9;   int main() {     try {       int N;       scanf( %d , &N);       int nt = 0;       int sol = oo;       vector<int> cnt(2 * N + 1, 0);       char t[1024];       scanf( %s , t);       for (int i = 0; i < N; ++i) {         if (t[i] ==  T ) {           ++nt;           cnt[i + 1] = cnt[i + N + 1] = 1;         }       }       for (int i = 1; i <= 2 * N; ++i) {         cnt[i] += cnt[i - 1];       }       int nh = N - nt;       for (int i = 1; i <= N; ++i) {         int have = cnt[i + nt - 1] - cnt[i - 1];         sol = min(sol, nt - have);       }       printf( %d n , sol);       return 0;     } catch (const Exception& exception) {       fprintf(stderr,  ****************************** n );       fprintf(stderr,  ERROR.%d: %s n , exception.line, exception.message);       fprintf(stderr,  ****************************** n );       throw exception;     }   }   