if __name__ == '__main__':
    n = int(input())
    arr = map(int, input().split())
    score = list(arr)
    flag=0
    if n>=2 and n<=10:
        if max(score)<=100 and min(score)>=-100:
            for i in range(0,(score.count(max(score)))):
                score.remove(max(score))
    print(max(score))