import math
import time

m=32768
a=23
b=12345

def lin_rand_arr_flxd(seed,size):
    if size==1:
        return math.ceil(math.fmod(a*math.ceil(seed)+b,m))
    r=[0 for i in range(size+1)]
    r[0]=math.ceil(seed)
    for i in range(1,size+1):
        r[i]=math.ceil(math.fmod((a*r[i-1]+b),m))
    return r[1:]

x, y = lin_rand_arr_flxd(time.time(), 40)[:20], lin_rand_arr_flxd(time.time(), 40)[20:]
print(len(x), len(y))

for i in range(19):
    j = i + 1
    while j < 20:
        k = (y[j] - y[i])/(x[j] - x[i])
        b = -x[i]*k + y[i]
        print('y = {:.2f}x{:+.2f}'.format(k, b))
        j += 1