#include <iostream>
int main(){
int n, sum=0, prod=1;
cout<<"n="; cin>>n;
int v[n];
for(i=0;i<n;i++){
cout<<"v["<<i<<"]=";
cin>>v[i];
}
for(i=0;i<n;i++){
if(v[i]>=0)
prod = prod*v[i];
else
sum = sum + v[i];
}
cout<<"prod="<<prod<<endl;
cout<<"sum="<<sum;
return 0;
}