Compilare: user.cpp: In function ‘void solv()’: user.cpp:39:26: warning: unused variable ‘i’ [-Wunused-variable] int cateok,nrc,nrp=0,i,au,q; ^ user.cpp:39:28: warning: unused variable ‘au’ [-Wunused-variable] int cateok,nrc,nrp=0,i,au,q; ^ user.cpp:39:31: warning: unused variable ‘q’ [-Wunused-variable] int cateok,nrc,nrp=0,i,au,q; ^ user.cpp: In function ‘int main()’: user.cpp:69:28: warning: unused variable ‘s’ [-Wunused-variable] unsigned long long a=2,s=1; ^