#!/usr/bin/env python

import sys
of = sys.argv[1]
f = open(of, "r")
text = f.read()
mylines = text.splitlines()
i = 0;
time = []
for line in mylines :
  #print("line:", line)
  time.append(float(line.split()[0]))
  #print "t:%f" %(time[i])
  i += 1

lastnum = -1
for a in range(0, 4999, 1):
  num = 0
  for t in time:
    #print "t: %f a: %d" %(t, a)
    if (t < a) :
      num += 1

  if (lastnum != num) :
      print("%d \t%d" %(num, a))
  lastnum = num

f.close();
exit(0)