#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;	
}