Input Format
The first line contains the space separated values of  and .
The next  lines contains  space separated integers.
Output Format
First, print the mean.
Second, print the var.
Third, print the std.

### Problem solution in Python 3 programming language.

import numpy
N, M = map(int, input().split())
my_array = numpy.array([ map(int, input().split()) for i in range(N) ])
print(numpy.mean(my_array, axis = 1))
print(numpy.var(my_array, axis = 0))
print(numpy.std(my_array, axis = None))

#### second solution

import numpy as np
n, m = map(intinput().split())
k = np.array([input().split() for _ in range(n)],dtype = int)
np.set_printoptions(legacy='1.13')
print(np.mean(k,axis=1), np.var(k,axis=0), np.std(k), sep='\n')

### Problem solution in Python 2 programming language.

import numpy
N, M = map(int, raw_input().split())
my_array = numpy.array([ map(int, raw_input().split()) for i in range(N) ])
print numpy.mean(my_array, axis = 1)
print numpy.var(my_array, axis = 0)
print numpy.std(my_array, axis = None)