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();
        int count =0;
        int p=1;
        if(a1==a2||a2==a3||a3==a1){
            p=0;
        }else if(((a2>a1)&&(a2>a3))||((a2<a1)&&(a2<a3))){
            for(int i=0;i<a2;i++){
                long b1=a1%p;
                long b2=a2%p;
                long b3=a3%p;
                if(((b2>b1)&&(b2>b3))||((b2<b1)&&(b2<b3))){
                    count++;
                }
                p++;
            }
        }  
        if(p==0){
            System.out.println("INF");
        }else{
            System.out.println(count);
        }
    }
}