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讨论 / python2 17行 180ms 125528 KB
changer 2019-06-03 00:00:11
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num = int(raw_input())

numlist = raw_input().split(' ')

result = []

for i in numlist:

i = int(i)

if i in result:

continue

else:

result.append(i)

result.sort()

print len(result)

s = ""

for i in result:

s += str(i)

s += ' '

s = s[:-1]

print s

#1 changer@2019-06-03 00:01:14
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可以不用转成int,直接用string就行
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