import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        long a1 = sc.nextInt();
        long a2 = sc.nextInt();
        long a3 = sc.nextInt();
        long Max=Math.max(Math.max(a1,a2),a3);
        int count =0;
        int p=1;
        for(int i=0;i<Max;i++){
            long b1=a1%p;
            long b2=a2%p;
            long b3=a3%p;
            if((b1!=b2&&b1!=b3)&&((b2>b1)&&(b2>b3))||((b2<b1)&&(b2<b3))){
               count++;
            }
            p++;               
        }
        if((a1!=a2&&a1!=a3)&&((a2>a1)&&(a2>a3))||((a2<a1)&&(a2<a3))){
            System.out.println("INF");
        }else{
            System.out.println(count);
        }
    }
}