Compilare: user.cpp: In function ‘int main()’: user.cpp:52:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(i != j) ^ user.cpp:44:24: warning: unused variable ‘max2’ [-Wunused-variable] int sol = (1<<30), max2 = 0; ^ user.cpp:62:19: warning: ‘ok’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout << sol - ok << '\n'; ^ user.cpp:59:31: warning: ‘nummin’ may be used uninitialized in this function [-Wmaybe-uninitialized] ok = (nummin == 1); ^