import java.util.*;
import java.lang.*;
import java.io.*;

class Ideone {
	public static void main (String[] args) throws java.lang.Exception {
		Scanner in = new Scanner(System.in);
		int a=Math.abs(in.nextInt());
		int b = a%10;
		a /= 100;
		System.out.print((a == b ? "=" : (a > b ? (0 + a):(0 + b))));
	}
}