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)); } }