import java.util.Arrays;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int[] a = new int[3];
		for (int i = 0; i < 3; i++) {
			a[i] = sc.nextInt();
		}
		sc.close();

		int g = 0;
		for (int i = 0; i < 3; i++) {
			g = gcd(g, a[i]);
		}
		if (g > 1) {
			System.out.println("INF");
			return;
		}

		Arrays.sort(a);
		int[] c = new int[a[0]];
		Arrays.fill(c, Integer.MAX_VALUE);
		for (int i = 1; i < 3; i++) {
			for (int j = 1; j < c.length; j++) {
				int x = 0;
				int end = a[0] * a[i] / gcd(a[0], a[i]);
				while (x < end) {
					x += a[i];
					if (x % a[0] == j) {
						c[j] = Math.min(c[j], x / a[0]);
						break;
					}
				}
			}
		}
		int ans = 0;
		for (int i = 1; i < c.length; i++) {
			if (c[i] == Integer.MAX_VALUE) {
				System.out.println("INF");
				return;
			}
			ans += c[i];
		}
		System.out.println(ans);
	}

	static int gcd(int a, int b) {
		return b == 0 ? a : gcd(b, a % b);
	}
}