largest

	import java.util.Scanner;

	public class largest {

		public static void main (String [] args) {

			Scanner input = new Scanner(System.in);

			int positions = input.nextInt();
			int[] myArray = new int[positions];

			for (int i = 0; i < myArray.length; i++){
				myArray[i] = input.nextInt();

			}

			int greatestvalue = maxTriple(myArray);

			System.out.println(greatestvalue);

		}

			public static int maxTriple (int [] myArray){

				int a = myArray[0];
				int c = myArray[myArray.length - 1];
				int b = myArray[(myArray.length/2)+1];
				int greater = 0;

				if ( a > b && a > c){

					greater = a;
				}
				else if ( b > a && b > c){

					greater = b;
				}

				else if ( c > a && c > b){

					greater = c;
				}

				return greater;

			}
	}