明明的随机数

https://www.nowcoder.com/practice/3245215fffb84b7b81285493eae92ff0?tpId=37&tqId=21226&rp=0&ru=/ta/huawei&qru=/ta/huawei/question-ranking

n=int(raw_input())
a=[]
for i in range(n):
    a.append(int((raw_input()))
a.sort()
b=[]
for i in a:
    if i not in b:
        b.append(i)
for i in b:
    print i