题解 | #表示数字#

while True:
    try:
        s = input()
        s1 = s[0]
        for i in range(1,len(s)):
            if not s[i-1].isdigit() and s[i].isdigit():
                s1 += '*'
                s1 += s[i]
            elif s[i-1].isdigit() and not s[i].isdigit():
                s1 += '*'
                s1 += s[i]
            else: s1 += s[i]
        if s[-1].isdigit(): s1 += '*'
        if s[0].isdigit(): s1 = '*'+s1
        print(s1)
    except:
        break