Compilare: user.cpp: In function ‘int main()’: user.cpp:7:9: warning: unused variable ‘N’ [-Wunused-variable] int N,i,prod,a,n,p; ^ user.cpp:7:11: warning: unused variable ‘i’ [-Wunused-variable] int N,i,prod,a,n,p; ^ user.cpp:8:9: warning: unused variable ‘P’ [-Wunused-variable] int P=1999999973; ^ user.cpp:17:28: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] prod=(prod*a)%p; ^