a = list(map(int,input().split()))
c = a[-1]
if a[0] == 0:
    a.append(c)
b = []
for i in range(len(a)):
    if a[i] == 0:
        b.append(i)
for x in b[::-1]:
    a.pop(x-1)
for t in a:
    print(t, end=' ')