题解 | #表示数字#

strings = input().strip()

re = ''
flag = 0
for i in strings:
    if i.isdigit():
        flag_new= 1
        if flag-flag_new:
            re += '*'
        re += i
        flag = flag_new
    else:
        flag_new = 0
        if flag-flag_new:
            re += '*'
        re += i
        flag = flag_new

if re[-1].isdigit():
    re += '*'

print(re)