题解 | #下厨房#
下厨房
https://www.nowcoder.com/practice/ca5c9ba9ebac4fd5ae9ba46114b0f476
import sys
val=[]
data=sys.stdin.readlines()
for item in data:
item=item.split(" ")
for i in item:
i=i.strip("\n")
val.append(i)
print(len(set(val)))
