from os import popen
from random import randint

def gen():
    test = ""

    return test

cnt = int(1e5)
f1 = open("test.in", "w")
for i in range(1, cnt):
    f = open("TASK.in", "w")
    test = gen()
    f.write(test)
    f.close()
    if i % 100 == 0:
        print(i)
    v1 = popen("run.exe < TASK.in").read()
    v2 = popen("stupid.exe < TASK.in").read()
    if v1 != v2 and v1 + '\n' != v2 and v1 != v2 + '\n':
        f1.write(test)
        break
f1.close()