17

inp = input().split(', ')
num = int(input())

outlist = []
for i in inp:
    tmp = i.split(' : ')
    if int(tmp[1]) < num:
        outlist.append(tmp[0])

outlist.sort()
if len(outlist) > 0:
    print(','.join(outlist))
else:
    print('Рон молодец!')