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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))
why we must round the std value? because the question not force us to round 11 digits.
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Mean, Var, and Std
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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)) why we must round the std value? because the question not force us to round 11 digits.