Compilare: user.cpp: In function ‘int main()’: user.cpp:14:20: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] fo << (x&1 != y&1 ? "NU\n":"DA\n"); ^ user.cpp:13:41: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (int i=1;i<5;++i) fi>>z,y+=z; ^ user.cpp:12:41: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (int i=1;i<5;++i) fi>>z,x+=z; ^