#!/usr/bin/env python
from math import sin
import os,sys

def main():
    count=0
    if len(sys.argv) < 1:
      print "Pas d'arguments"
    else :
        count = int(sys.argv[1])
    a=euler2(0.4,2,0.02)
    for i in range (count):
        print str(a.next())

def euler2(a0_x, a0_y, step):
        while(1):
                a0_y=a0_y+(6*sin(5*a0_x)-a0_y)*step
                a0_x+=step
                yield str(a0_x)+"\t"+str(a0_y)


if __name__ == "__main__":
    main()