Compilare: main.cpp: In function 'bool rez(long long int)': main.cpp:12:19: warning: unused variable 's' [-Wunused-variable] long long s=0; ^ main.cpp: In function 'long long int cb(long long int)': main.cpp:54:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:57:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("proc.in","r",stdin); ^ main.cpp:58:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("proc.out","w",stdout); ^