#include <iostream>
#include <map>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
int numsx1[10];
int numsm1[10];
int main(int argc, char** argv)
{
map<int,int> m1;
int n1;
while(cin>>n1)
{
// int weight1=0;
for(int i=0;i<n1;++i)
{
cin>>numsm1[i];
}
for(int i=0;i<n1;++i)
{
cin>>numsx1[i];
}
for(int i=0;i<n1; )
{
if(0<numsx1[i])
{
--numsx1[i];
auto m2=m1;
for(auto x1:m2)
{
//cout<<x1.first+numsm1[i]<<" ";
m1[x1.first+numsm1[i]]=1;
}
m1[numsm1[i]]=1;
//cout<<numsm1[i]<<" ";
}
else
{
++i;
}
}
// int ans1;
// for(auto x1:m1)
// {
//
// }
cout<<m1.size()+1<<endl;
}
return 0;
}