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

unsigned long long int nr,n1,n2,n3,i,j,k,n,l,sum;
int x;

int main(){
freopen("plus.in","r",stdin);
freopen("plus.out","w",stdout);
scanf("%d",&sum);
for(i=1;i<=3;i++){
scanf("%d %d",&n,&x);
if(x==1)
	n1+=n;
else
if(x==0)
	n2+=n;
else
	n3+=n;
}
if(sum>n1){printf("%d",0);return 0;}

nr=1+n2;
nr+=min(n1,n3)+n2;

printf("%d",nr);
return 0;}