import random

occ = {}

MAXTIMES = 1000000 

for _ in range(1,MAXTIMES):
    res=random.randint(0,2**16) % 5
    num=(res&res)%10
    if str(num) not in occ:
        occ[str(num)] = 1
    else:
        occ[str(num)] = occ[str(num)] + 1

for key, value in sorted(occ.items()):
    print(key, ' : ', str(value*100/MAXTIMES))