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

start = 0
end = 2 * n - 3

for i in range(start + 1, end):
    for j in range(0, i // 2 + 1):
        if i - j <= n - 1:
            if j == i - j:
                pass
            else:
                if a_list[j] > a_list[i - j]:
                    a_list[j], a_list[i - j] = a_list[i - j], a_list[j]
                
a_list_str = [str(e) for e in a_list]
res = ' '.join(a_list_str)

print(res)