import numpy as np 

N,M = map(int, input().split())

input_list = []

for i in range(N):
    input_list.append(list(map(int, input().split())))
 
np_input_list = np.array(input_list, dtype=int)   

print(np.mean(np_input_list, axis = 1))
print(np.var(np_input_list,  axis = 0))
print(round(np.std(np_input_list),11))