# Enter your code here. Read input from STDIN. Print output to STDOUT
n_students,x_subjects = map(int, input().split())

lista = list()

students_list = [x+1 for x in range(n_students)]

for j in range(x_subjects):
    line = list(map(float, input().split()))
    lista.append(line)

for student in zip(*lista):
    print(round(sum(student)/ x_subjects,1))
    

N,X = map(int,input().split())
subject_data = [list(map(float,input().split())) for _ in range(X)]
for stud_data in zip(*subject_data):
    print(round(sum(stud_data)/X,1))

X=[]
l=list(map(int,input().split()))
for _ in range(l[1]):
   A=list(map(float,input().split()))
   X.append(A)
for i in list(zip(*X)):
        print(sum(list(i))/l[1])
    

N,X = map(int, input().split())
marks = list()

for i in range(X):
    marks.append(map(float, input().split()))
    
for student_marks in list(zip(*(marks))):
    print(sum(student_marks)/X)