Compilare: user.cpp: In function ‘bool Ok(int)’: user.cpp:18:35: warning: unused variable ‘cnt’ [-Wunused-variable] int v1=0,v2=0,aux1=1,aux2=1,i,cnt=0; ^ user.cpp: In function ‘int main()’: user.cpp:60:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("potriveala.in","r",stdin); ^ user.cpp:61:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("potriveala.out","w",stdout); ^ user.cpp:62:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s%s", (a+1),(b+1)); ^