import sys
import random

if __name__ == '__main__':
    f = open('infile.dat', 'w')
    count = 0
    while count < int(sys.argv[1]):
        f.write(str(random.randint(0,int(sys.argv[1]))) + " " + str(random.random()*100) + "\n")
        count = count + 1
    f.close()