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Be careful with log2() !!!!
What is the ans of floor of log2(288230376151711743) ??? Run a code with builtin log2() function, ans is 58 !!! Even google gives the ans 58 !!! Now write a code yourself to find the log2(x), and put x = 288230376151711743 . The actual answer is 57 !!!
couldn't get it !!!
