#include
int x[100],n;
void citire(int p,int q)
{int m;
if(p==q) cin>>x[p];
else {m=(p+q)/2;
citire(p,m);
citire(m+1,q); }
}
int produs (int p,int q)
{int m,p1,p2;
if(p==q) return x[p];
else {m=(p+q)/2;
p1=produs(p,m);
p2=produs(m+1,q);
return p1*p2;}
void main()
{cin>>n;
citire(1,n);
cout<
