using System;
public class C {
    public void M() {
        int n = int.Parse(Console.ReadLine());
        int a = int.Parse(Console.ReadLine());
        int b = int.Parse(Console.ReadLine());
        int numbers = 0;
 
        for (int i=1; i<=b; i++)
        {
           int m = i;
 
           for (int k=2; k<=n; k++)
           {
             m *= m;
           }
           if (m>=a&&m<=b)
           {
              numbers+=1;
           }
 
        }
        Console.WriteLine(numbers);
    }
}

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