# your code goes here
import re
s = 'あ い&う え'
out = re.sub(r'&#(\d{1,5});', lambda mr: chr(int(mr.group(1))), s)
out = re.sub(r'\s| ', ' ', out)
print(out)
IyB5b3VyIGNvZGUgZ29lcyBoZXJlCmltcG9ydCByZQoKcyA9ICfjgYImIzE2MDvjgYQmIzM4O+OBhuOAgOOBiCcKCm91dCA9IHJlLnN1YihyJyYjKFxkezEsNX0pOycsIGxhbWJkYSBtcjogY2hyKGludChtci5ncm91cCgxKSkpLCBzKQpvdXQgPSByZS5zdWIocidcc3zjgIAnLCAnICcsIG91dCkKCnByaW50KG91dCk=