use std::collections::BinaryHeap;
use std::io::*;
fn gcd(a: i32, b: i32) -> i32 {
    if b == 0 {
        return a;
    }
    gcd(b, a % b)
}
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 mut a: Vec<i32> = (0..3)
        .map(|_| itr.next().unwrap().parse().unwrap())
        .collect();
    a.sort();
    if gcd(a[0], gcd(a[1], a[2])) != 1 {
        println!("INF");
    } else {
        let mut used = vec![false; a[0] as usize];
        let mut bh = BinaryHeap::new();
        bh.push(0);
        let mut ans = 0;
        while let Some(m) = bh.pop() {
            if used[(-m % a[0]) as usize] {
                continue;
            }
            ans += -m / a[0];
            used[(-m % a[0]) as usize] = true;
            bh.push(m - a[1]);
            bh.push(m - a[2]);
        }
        println!("{}", ans);
    }
}