#include<bits/stdc++.h> using namespace std; int a[5]; int b[4]; int main(){ freopen("a.in","r",stdin); freopen("a.out","w",stdout); for (int i=1;i<=4;i++) cin>>a[i]; for (int i=1;i<=3;i++) cin>>b[i]; sort(a+1,a+5); sort(b+1,b+4); cout<<a[1]+b[1]<<endl; return 0; }