built_ins_zip.py

"""

Problem Statement

zip([iterable, ...])

This function returns a list of tuples, where the i-th tuple contains the i-th element from each of the argument sequences or iterables.

If argument sequences are of unequal lengths, then returned list is truncated in length to the length of the shortest argument sequence.

Sample Code

>>> print zip([1,2,3,4,5,6],'Hacker')
[(1, 'H'), (2, 'a'), (3, 'c'), (4, 'k'), (5, 'e'), (6, 'r')]
>>> 
>>> print zip([1,2,3,4,5,6],[0,9,8,7,6,5,4,3,2,1])
[(1, 0), (2, 9), (3, 8), (4, 7), (5, 6), (6, 5)]
>>> 
>>> A = [1,2,3]
>>> B = [6,5,4]
>>> C = [7,8,9]
>>> X = [A] + [B] + [C]
>>> 
>>> print zip(*X)
[(1, 6, 7), (2, 5, 8), (3, 4, 9)]
Task

The National University, conducts an examination of N students in X subjects. 
Your task is to compute average scores of each student.

Average score=Sum of scores obtained in all subjects by a studentTotal number of subjects
The format for general mark sheet is :

Student ID → ___1_____2_____3_____4_____5__               
Subject 1   |  89    90    78    93    80
Subject 2   |  90    91    85    88    86  
Subject 3   |  91    92    83    89    90.5
            |______________________________
Average        90    91    82    90    85.5 
Input Format

First line contains, space separated values of N and X. 
Next X lines contains, space separated marks obtained by students in a particular subject.

Constraints

0<N≤100 
0<X≤100
Output Format

Print averages of all students in separate lines.

Averages must be correct upto 1 decimal place.

Sample Input

5 3
89 90 78 93 80
90 91 85 88 86  
91 92 83 89 90.5
Sample Output

90.0 
91.0 
82.0 
90.0 
85.5        
Explanation

Marks obtain by student 1 : 89, 90, 91 
Average marks of student 1 : 270 / 3 = 90

Marks obtain by student 2 : 90, 91, 92 
Average marks of student 1 : 273 / 3 = 91

Marks obtain by student 3 : 78, 85, 83 
Average marks of student 1 : 246 / 3 = 82

Marks obtain by student 4 : 93, 88, 89 
Average marks of student 1 : 270 / 3 = 90

Marks obtain by student 5 : 80, 86, 90.5 
Average marks of student 1 : 256.5 / 3 = 85.5



"""

# Enter your code here. Read input from STDIN. Print output to STDOUT
from  collections import defaultdict

k = map(int,raw_input().split())
d = list()

for i in xrange(k[1]):
    d.append(map(float,raw_input().split()))
    
for i in zip(*d):
    print sum(i)/k[1]