N = int(input())
x = 2 * N % 3
S = '3'
if x == 0:
    S += '22'
else:
    S += str(x) + '1'
if N == 2:print(3,1)
else:
    S += '1' * (N-3)
    for i in S:
        print(i,end = ' ')
    print()