import java.util.Scanner;
public class lol {
public static void main(String[] args) {
Scanner input=new Scanner(System.in);
int[] ar=generateArray();
System.out.println("最大数是:"+getMax(ar));
}
public static int[] generateArray( )
{
Scanner input=new Scanner(System.in);
int[] a=new int[99];
int i;
int t=input.nextInt();
for(i=0;i<t;i++)
{
a[i]=input.nextInt();
}
return a;
}
public static int getMax(int[] arr)
{
Scanner input=new Scanner(System.in);
int j,m=0;
for(j=0;j<arr.length;j++){
if(m<arr[j]){
m=arr[j];
}
}
return m;
}
}