// ---------- begin input macro ----------
// reference: https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let s = {
            use std::io::Read;
            let mut s = String::new();
            std::io::stdin().read_to_string(&mut s).unwrap();
            s
        };
        let mut iter = s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
}

macro_rules! input_inner {
    ($iter:expr) => {};
    ($iter:expr, ) => {};
    ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($iter, $t);
        input_inner!{$iter $($r)*}
    };
}

macro_rules! read_value {
    ($iter:expr, ( $($t:tt),* )) => {
        ( $(read_value!($iter, $t)),* )
    };
    ($iter:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
    };
    ($iter:expr, chars) => {
        read_value!($iter, String).chars().collect::<Vec<char>>()
    };
    ($iter:expr, bytes) => {
        read_value!($iter, String).bytes().collect::<Vec<u8>>()
    };
    ($iter:expr, usize1) => {
        read_value!($iter, usize) - 1
    };
    ($iter:expr, $t:ty) => {
        $iter.next().unwrap().parse::<$t>().expect("Parse error")
    };
}
// ---------- end input macro ----------

fn gcd(a: usize, b: usize) -> usize {
    if b == 0 {
        a
    } else {
        gcd(b, a % b)
    }
}

fn run() {
    input! {
        a: usize,
        b: usize,
        c: usize,
    }
    if gcd(a, gcd(b, c)) > 1 {
        println!("INF");
        return;
    }
    let w = match (gcd(a, b), gcd(b, c), gcd(c, a)) {
        (1, _, _) => a * b,
        (_, 1, _) => b * c,
        (_, _, 1) => c * a,
        (x, _, _) => a * b + c * x,
    };
    let mut dp = vec![false; w];
    dp[0] = true;
    for i in 0..w {
        if dp[i] {
            for &j in [i + a, i + b, i + c].iter() {
                dp.get_mut(j).map(|p| *p = true);
            }
        }
    }
    let ans = dp.iter().filter(|p| !*p).count();
    println!("{}", ans);
}

fn main() {
    run();
}