# generates a two-vairable set of values

from random import randint

def main():
  inFile = open("outData.txt")

  sumX = 0
  sumY = 0
  counter = 0

  for line in inFile:
    x,y = line.split()
    sumX += int(x)
    sumY += int(y)
    counter += 1
    
  print("report: ",counter," pairs are read from the file outData.txt")
  print("the average of x-values is ~{0:.2f}, the average of y-values is ~ {1:.2f}".format(sumX/counter,sumY/counter))

  inFile.close()
  
main()