题解 | #表示数字#

s = input()
ans = ""
char_pre = ""
for i in s:
    if i.isdigit():
        if not char_pre.isdigit():
            ans += "*"
    else:
        if char_pre.isdigit():
            ans += "*"
    ans += i
    char_pre = i
if i.isdigit():
    ans += "*"
print(ans)