use std::io::Read;
const MAX: u64 = 1000000000000000;

fn main() {
    let mut s: String = String::new();
    std::io::stdin().read_to_string(&mut s).ok();
    let mut itr = s.trim().split_whitespace();
    let v: Vec<u64> = (0..5)
        .map(|_| itr.next().unwrap().parse().unwrap())
        .collect();

    let mut f1: u64 = 0;
    let mut f2: u64 = 1;
    let mut fib: Vec<u64> = Vec::new();
    while f2 < MAX * 2 {
        fib.push(f2);
        let tmp = f1;
        f1 = f2;
        f2 += tmp;
    }

    let mut ans: usize = 0;
    let mut l: usize = 0;
    let mut r: usize = fib.len();
    while r > l + 1 {
        let mid = (l + r) / 2;
        if v[4] < fib[mid] {
            r = mid;
        } else {
            l = mid;
        }
    }
    if v[4] == 1 {
        l = 1;
        if v[3] == 1 {
            l = 0;
        }
    }
    for &i in v.iter().rev() {
        if i == fib[l] {
            ans += 1;
            l += 1;
        }
    }
    println!("{}", ans);
}