Kindly help with the kth root problem

#1

Link to code:

#2

hey @kunal9724kg, your code is giving wrong answer for
input
7
1000000000000 4
1000000000000 6
1000000000000 2
1000000000000 31
1000000000000 10
1000000000000 100
1000000000000 7
your output
625061280618
500007629568
712602252916
500000000000
500000000000
500000000000
500000000000
correct output
1000
100
1000000
2
15
1
51

#3

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