Python 3, 20 bytes + 3 removed = 23, Cracked by des54321

print(str()[1:3]*50)

Try it online!

Currently prints an empty string. Should print 100 lowercase L's like so: llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll