using System;

namespace No358{
    public class Program{
        public static void Main(string[] args){
            var sr = new StreamReader();
            //---------------------------------
            var a1 = sr.Next<int>();
            var a2 = sr.Next<int>();
            var a3 = sr.Next<int>();

            Func<int, int, int, bool> isKadomatsu = (x1, x2, x3) =>{
                if(x1 == x3) return false;
                if(x2 > x1 && x2 > x3) return true;
                if(x2 < x1 && x2 < x3) return true;
                return false;
            };

            if(isKadomatsu(a1, a2, a3)){
                Console.WriteLine("INF");
                return;
            }

            var res = 0;
            for(var i = 1; i <= 1000; i++){
                if(isKadomatsu(a1 % i, a2 % i, a3 % i)){
                    res++;
                }
            }

            Console.WriteLine(res);
            //---------------------------------
        }
    }

    public class StreamReader{
        private readonly char[] _c = {' '};
        private int _index = -1;
        private string[] _input = new string[0];

        public T Next<T>(){
            if(_index == _input.Length - 1){
                _index = -1;
                while(true){
                    string rl = Console.ReadLine();
                    if(rl == null){
                        if(typeof(T).IsClass) return default(T);
                        return (T)typeof(T).GetField("MinValue").GetValue(null);
                    }
                    if(rl != ""){
                        _input = rl.Split(_c, StringSplitOptions.RemoveEmptyEntries);
                        break;
                    }
                }
            }
            return (T)Convert.ChangeType(_input[++_index], typeof(T), System.Globalization.CultureInfo.InvariantCulture);
        }
    }
}