N=int(input())
arr=list(map(int, input().split()))
if 0 not in arr:
     print("Invalid input")
else:
    non_zero=[]
    zero=[]
    for num in arr:
        if num==0:
            non_zero.append(num)
        else:
            zero.append(num)
          
result = zero + non_zero

for x in result:
    print(x,end=" ")