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import numpy as np
n, m = map(int, input().split())
arr = []
for i in range(n):
lm = list(map(int, input().split()))
arr.append(lm)
k = np.array(arr)
print(np.mean(k, axis=1))
print(np.var(k, axis=0))
print(round(np.std(k), 11))
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Mean, Var, and Std
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import numpy as np n, m = map(int, input().split()) arr = [] for i in range(n): lm = list(map(int, input().split())) arr.append(lm) k = np.array(arr) print(np.mean(k, axis=1)) print(np.var(k, axis=0)) print(round(np.std(k), 11))