#include <bits/stdc++.h>
#define rep(i, n) for(int i = 0; i < (int)(n); ++i)
using namespace std;
using ll = long long;
using P = pair<int,int>;

int main() {
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);


    int a, b, c, x, y;
    cin >> a >> b >> c >> x >> y;


    int ans = 1001001001;
    for(int i = 0; i <= 100000; ++i) {
        int A = i * a;
        int AB = (x - i) * 2;
        int C = AB * c;
        int B = 0;
        if(AB/2 > y) B = y * b;
        else B = (y - (AB/2)) * b;
        ll sum = A + B + C;

        ans = min(ans , sum);
    }

    cout << ans << endl;
    return 0;
}