##Python 3, 164 bytes, aka garbage :)
from random import*
d={}
a=l=n=p=0
for i in range(100):
d[i]=0
while n<100:
p=randint(0,99)
if p==50:
l=0
else:
l=1
if d[p]==0:
d[p]=1
n += 1
print(n)
2 of 4
added 2 characters in body
user78881