#include<algorithm>
#include<iostream>
#include<functional>
#include<cmath>
#include<iomanip>
using namespace std;
int main(){
  long long int a,b,c,x,y,d,ans=100000000000000,e;
  cin>>a>>b>>c>>x>>y;
  for(long long int i=0;i<=max(x,y);i++){
    e=c*2*i+a*max(0,x-i)+b*max(0,y-i);
    ans=min(ans,e);
  }
}
