简单python走起 14行

解题思路:

注意事项:

参考代码:

n=int(int(input()))

mas=[list(map(int,input().strip().split()))for i in range(n)]

mas_1=[j for i in mas for j in i]

l=[]

for i in range(min(mas_1),max(mas_1)+1):

    l.append(i)

for i in mas_1:

    if mas_1.count(i)==2:

        s=i

        break

mas_1=set(mas_1)

l=set(l)

a=l-mas_1

a=list(a)

print(a[0],s)