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  1. t = int(input())
  2. while(t!=0):
  3.     x=input()
  4.     y=input()
  5.     temp=0
  6.     a=[]
  7.     for i in x:
  8.         temp=0
  9.         for j in y:
  10.             if(i==j):
  11.                 temp=1
  12.                 break
  13.         if(temp==0):
  14.             a.append(i)
  15.  
  16.  
  17.     b=[]
  18.     for j in y:
  19.         temp=0
  20.         for i in x:
  21.             if(i==j):
  22.                 temp=1
  23.                 break
  24.         if(temp==0):
  25.             b.append(j)
  26.  
  27.  
  28.     c=a+b
  29.     c.sort()
  30.     s=set(c)
  31.     c=list(s)
  32.     c.sort()
  33.  
  34.     #print(len(c))
  35.     if (len(c)!=0):
  36.         print(''.join(c))
  37.     t=t-1
  38.  
Success #stdin #stdout 0.02s 28384KB
comments (?)
stdin
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3
asdf
ascv
aab
ab
abc
deff
stdout
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cdfv
abcdef
https://ideone.com/HTQd7W
language:
Python 3 (python  3.9.5)
created:
6 years ago
visibility:
public

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