arr = list(set(arr))
arr.sort()

print(arr[-2])

if name == 'main': n = int(input()) arr = list(map(int, input().split()))

unique_scores = list(set(arr))   # remove duplicates
unique_scores.sort()             # sort ascending

print(unique_scores[-2])         # second largest

if name == 'main':

    n = int(input())

    arr = list(map(int, input().split(' ')))

    if 2<=n<=10 and all(-100<=x<=100 for x in arr):

            scores = sorted(set(arr))

    print(scores[-2])

n = int(input()) l = map(int, input().split()) s=set(l) l2=list(s) l2.sort() l2.pop() print(l2.pop())

 n = int(input())
arr = list(map(int, input().split()))

i: int = 0  # type hint, does not enforce type

if(2<=n<=10 and -100<=arr[i]<=100):

 arr1=list(set(arr))  #deleting dupli n storing in list instead of set

 y=len(arr1)           #new len of arr

 for i in range(y):  #bubble sort
    for j in range(y-1-i):
        if arr1[j] > arr1[j+1]:
            temp=arr1[j]
            arr1[j]=arr1[j+1]
            arr1[j+1]=temp

t=len(arr1) print(arr1[-2])