#include<stdio.h>
#define min(a,b) ((a)<(b)?(a):(b))


long long int nr,n1,n2,n0,i,j,k,n,l,sum;
long long int x;

int main(){
freopen("plus.in","r",stdin);
freopen("plus.out","w",stdout);
scanf("%lld",&sum);
for(i=1;i<=3;i++){
scanf("%lld %lld",&n,&x);
if(x==1)
	n1=n1+n;
else
if(x==0)
	n0=n0+n;
else
if(x==-1)
	n2=n2+n;
}
if(sum>n1)nr=0;
else
if(sum==n1)nr=1+n0;
else
{nr=1+n0;
n1-=sum;
nr+=min(n1,n2)*(n0+1);}

printf("%lld\n",nr);
return 0;}