Compilare: main.cpp: In function 'int main()': main.cpp:29:40: warning: self-comparison always evaluates to false [-Wtautological-compare] if(even && i%2==1 && xors^v[i] <v[i]){ ~~~~~^~~~~ main.cpp:29:40: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses] main.cpp:30:31: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses] out<<i<<" "<<(v[i]-xors^v[i]); ~~~~^~~~~ main.cpp:32:46: warning: self-comparison always evaluates to false [-Wtautological-compare] }else if(!even && i%2==0 &&xors^v[i] <v[i] ){ ~~~~~^~~~~ main.cpp:32:46: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses] main.cpp:15:11: warning: unused variable 't' [-Wunused-variable] int t,n,c,xors; ^ main.cpp:15:15: warning: unused variable 'c' [-Wunused-variable] int t,n,c,xors; ^ main.cpp:22:16: warning: 'xors' may be used uninitialized in this function [-Wmaybe-uninitialized] xors ^= v[i]; ~~~~~^~~~~~~~