# RLE
# https://ru.wikipedia.org/wiki/Кодирование_длин_серий


s = input()
k = 1
for i in range(len(s) - 1):
    if s[i] == s[i + 1]:
        k += 1
    else:
        print(k, s[i], sep='', end='')
        k = 1
print(k, s[-1], sep='')

s = input()
k = ''
for i in range(len(s) - 1):
    if s[i] in '0123456789':
        k += s[i]
    else:
        print(s[i] * int(k), end='')
        k = ''
print(s[-1]*int(k))