first = int(input())
strs = input().split(' ')
nums = []
for i in strs:
    try:
        nums.append(int(i))
    except:
        continue
unique = []
for i in nums:
    if i not in unique:
        unique.append(i)
    else:
        continue
n = len(unique)
for i in range(n-1):
    for j in range(i,n):
        if unique[j] < unique[i]:
            k = unique[j]
            unique[j] = unique[i]
            unique[i] = k
[print(x, end=' ') for x in unique ]