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n, m = list(map(int, input().strip().split()))
arr = np.array([list(map(int,(input().strip().split()))) for _ in range(n)])
print(np.mean(arr, axis=1)) print(np.var(arr, axis=0)) print(round(np.std(arr), 11))
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Mean, Var, and Std
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n, m = list(map(int, input().strip().split()))
arr = np.array([list(map(int,(input().strip().split()))) for _ in range(n)])
print(np.mean(arr, axis=1)) print(np.var(arr, axis=0)) print(round(np.std(arr), 11))