Compilare: user.cpp: In function ‘long long int search(long long int, long long int, long long int)’: user.cpp:17:38: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(rez2!=c || rez>y || rez>=x && rez<=y) right=mid-1; ~~~~~~~^~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:27:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("taste.in","r",stdin); ^ user.cpp:28:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("taste.out","w",stdout); ^ user.cpp:31:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld %lld",&x,&y); A=x; B=y; ^