Compilare: user.cpp: In function ‘int main()’: user.cpp:25:21: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(p&1==1) ^ user.cpp:8:28: warning: unused variable ‘n’ [-Wunused-variable] unsigned long long int n,r=666013,i,a,b,c,d,a1,a2,b1,b2,c1,c2,d1,d2,x,p; ^ user.cpp:8:39: warning: unused variable ‘i’ [-Wunused-variable] unsigned long long int n,r=666013,i,a,b,c,d,a1,a2,b1,b2,c1,c2,d1,d2,x,p; ^