#!/usr/bin/python -Wall

# ================================================================
# John Kerl
# 2007-07-02
# kerl.john.r@gmail.com
# ================================================================
# This software is released under the terms of the GNU GPL.
# Please see LICENSE.txt in the same directory as this file.
# ================================================================

from __future__ import division # 1/2 = 0.5, not 0.
import random
import sys

N = 100
m = -3.4
b = -10.2
s = 1.1

if (len(sys.argv) == 5):
	N =   int(sys.argv[1])
	m = float(sys.argv[2])
	b = float(sys.argv[3])
	s = float(sys.argv[4])

for x in range(0, N):
	y = m*x + b + random.gauss(0, s)
	print x, y