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import numpy as np
arr = [list(map(int, input().split())) for _ in range(int(input().split()[0]))]
print(np.mean(arr, axis=1)) print(np.var(arr, axis=0)) print(round(np.std(arr, axis=None), 11))
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Mean, Var, and Std
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import numpy as np
arr = [list(map(int, input().split())) for _ in range(int(input().split()[0]))]
print(np.mean(arr, axis=1)) print(np.var(arr, axis=0)) print(round(np.std(arr, axis=None), 11))