f = open("exams","r") # opens the file exams to read

l = f.readline() # reads the first line
while l: # loop while there's a line
    l = l.split(" ") # split the line into an array
    values = l[1:] # makes a copy of array l without the first element
    
    sum = 0.0 # assign a float 0.0 to sum
    for v in values: # loop through the array values
        sum += float(v) # adds to sum the floating point representation of the current (v) for value
    
    print "%s %f" % (l[0] , sum / len(values)) # display results of average
    
    l = f.readline() # load another line from exams
    
f.close() # close the file exams