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# Author Problem Lang Verdict Time Memory Sent Judged  
130557562 Practice:
Anjali_2001 		1567B - 36 Python 3 Accepted 202 ms 9224 KB 2021-10-02 14:51:31 2021-10-02 14:51:31
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for s in[*open(0)][1:]:a,b=map(int,s.split());x=(0,a-1,1,a)[a%4];print(a+(b!=x)+(b^x==a))
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