use proconio::input;

fn main() {
    input!{
        a:usize, b:usize, c:usize, d:usize,
        p:usize, q:usize, r:usize, s:usize, t:usize
    }

    let mut ans:usize = 0;
    let mut sum_time:usize = 0;
    let mut min_time:usize = 0;

    let mut arr:[[usize;2];4] = [[a,p], [b,q], [c,r], [d,s]];
    arr.sort_by(|e1,e2| e1[1].cmp(&e2[1]));

    let mut i:usize = 0;

    loop {
        if arr[i][0] == 0 {
            if i==3 {
                break;
            }
            i += 1;
        }
        sum_time += arr[i][1];
        ans += 1;
        arr[i][0] -= 1;

        if sum_time > t {
            ans -= 1;
            break;
        }
    }

    println!("{}", ans);
}