HAPPY NEW YEAR

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Chef wants to gift pairs to his friends this new year. But his friends like good pairs only. A pair (a , b) is called a good pair if 1 <= a < b <= N such that GCD(a*b , P) = 1. Since Chef is busy in preparation for the party, he wants your help to find all the good pairs. ————————————————————————————————————— INPUT • The first line of the input contains a single integer T. • The first and

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solution.cppC++17

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