# pravdepodobnost 2xD12
from collections import Counter
from random import randint

N = 1000000
soucty = [randint(1, 12) + randint(1, 12) for _ in range(N)]

H = Counter()

for s in soucty:
    H[s] += 1

for n in sorted(H.keys()):
    print(n, ':', H[n]/N*100, '%')