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

class Main {
	
	public static void out (Object o) {
		System.out.println(o);
	}
		
	public static void main (String[] args) throws IOException {
		BufferedReader br = 
			new BufferedReader(new InputStreamReader(System.in));
		
		String[] line = br.readLine().split(" ");
		br.readLine();
		
		int x = Integer.parseInt(line[0]);
		int y = Integer.parseInt(line[1]);
		
		out(Math.max(x , y));
	}
}