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import math num = input() num = float(num) n1 = 5*num*num - 4 n2 = 5*num*num + 4 def checksqr(N): sq = math.sqrt(N) flr = math.floor(sq) res = sq - flr return res r1 = checksqr(n1) r2 = checksqr(n2) if(r1 ==0) or (r2==0): print("Fibonacci") else: print("Not Fibonacci")
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