Mean, Var, and Std

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    For Python3 Platform

    It is not mentioned to round the value of standard deviation to 11 digits. I did it just to match the answer

    import numpy
    
    N, M = map(int, input().split())
    arr = numpy.array([input().split() for _ in range(N)], int)
    
    print(numpy.mean(arr, axis=1))
    print(numpy.var(arr, axis=0))
    print(round(numpy.std(arr), 11))