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