using System;
using System.Linq;

class C2
{
	static int[] Read() => Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
	static void Main() => Console.WriteLine(Solve());
	static object Solve()
	{
		var v = Read();
		var (a, b, c) = (v[0], v[1], v[2]);

		if (Gcd(Gcd(a, b), c) > 1) return "INF";
		var m = v.Max();

		var u = new bool[m * m];
		for (int k = 0; k < a; k++)
			for (int i = k * b; i < u.Length; i += a)
				u[i] = true;
		for (int k = 0; k < a; k++)
			for (int i = k * c; i < u.Length; i += a)
				u[i] = true;
		for (int k = 0; k < b; k++)
			for (int i = k * c; i < u.Length; i += b)
				u[i] = true;
		return u.Count(x => !x);
	}

	static int Gcd(int a, int b) { for (int r; (r = a % b) > 0; a = b, b = r) ; return b; }
}