import random
import math
import sys


f = open('../cplusplus/'+sys.argv[2]+'.txt', 'w')
nodes = int(sys.argv[1]);
width = 600;
height = 600;
clusters = 2;
wstep = width / clusters;
hstep = height / clusters;
f.write(str(nodes) + '\n');

def circleCoords(r):
    radian = random.uniform(0,6.3);
    return (r*math.cos(radian), r * math.sin(radian))

for x in range(nodes):
    i = random.randint(1,clusters-1);
    ch = random.choice([1,2,3,4,5,6]);
    if ch == 1:
        f.write(str(random.uniform(0,wstep) + i * wstep) + ' ' + str(random.uniform(0,hstep) + i * hstep) + '\n')
    elif ch == 2:
        f.write(str(random.uniform(0,wstep) + i * wstep) + ' ' + str(random.uniform(0,hstep) + (clusters-i - 1) * hstep) + '\n')
    elif ch == 3:
        f.write(str(random.uniform(0,wstep) + (clusters - i - 1) * wstep) + ' ' + str(random.uniform(0,hstep) + i * hstep) + '\n')
    elif ch == 4:
        f.write(str(random.uniform(0,wstep) + (clusters-i-1) * wstep) + ' ' + str(random.uniform(0,hstep) + (clusters-i-1) * hstep) + '\n')
    elif ch == 5:
        f.write(str(random.uniform(0,wstep)) + ' ' + str(random.uniform(0,hstep) + i * hstep) + '\n')
    elif ch == 6:
        f.write(str(random.uniform(0,wstep) + i * wstep)+ ' ' + str(random.uniform(0,hstep)) + '\n')