Compilare: user.cpp: In function ‘void Solve()’: user.cpp:57:22: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if( V[i] & xorsum == xorsum ) ^ user.cpp: In function ‘void Read()’: user.cpp:12:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:14:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &V[i]); ^