use proconio::input;

fn main() {
    input! {
        num_problems: [usize; 4],
        num_times: [usize; 4],
        t: usize,
    }

    let mut problems = num_problems
        .iter()
        .zip(&num_times)
        .map(|(&num, &time)| Problem::new(num, time))
        .collect::<Vec<_>>();
    problems.sort_unstable_by_key(|problem| problem.time);

    let mut sum_solved_problems = 0_usize;
    let mut rem_time = t;
    for &problem in &problems {
        let num_solved_problems = (rem_time / problem.time).min(problem.num);
        sum_solved_problems += num_solved_problems;
        rem_time -= problem.time * num_solved_problems;
    }

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

#[derive(Debug, Clone, Copy)]
struct Problem {
    num: usize,
    time: usize,
}

impl Problem {
    fn new(num: usize, time: usize) -> Self {
        Self { num, time }
    }
}