Compilare: main.cpp: In function 'int main()': main.cpp:71:7: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(v==2) ^ main.cpp:48:10: warning: variable 'f' set but not used [-Wunused-but-set-variable] secv f[10001]; ^ main.cpp:44:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("arc.in","r",stdin); ^ main.cpp:45:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("arc.out","w",stdout); ^