Compilare: main.cpp:6:0: warning: ignoring #pragma 03 [-Wunknown-pragmas] #pragma 03 main.cpp: In function 'bool check(int, int)': main.cpp:45:61: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses] bool check(int x, int y) {int _=(1<<s)-1; return (x&_)^(y&_)==_;} ~~~~~^~~