def re2sqrt(s):
    j = s.find("^(1/2)")
    while j != -1:
        j -= 1
        while '0'<=s[j]<='9':
            j=j-1
        if (j+1) < 0:
            s = 'sqrt('+s
        else:
            s = s[:j+1]+'sqrt('+s[j+1:]
        s = s.replace("^(1/2)",")",1)
        j = s.find("^(1/2)")
    return s
ac3f9f6cd21790993da3193abad9cd8d67644392
<mask token>

def re2sqrt(s):
    j = s.find('^(1/2)')
    while j != -1:
        j -= 1
        while '0' <= s[j] <= '9':
            j = j - 1
        if j + 1 < 0:
            s = 'sqrt(' + s
        else:
            s = s[:j + 1] + 'sqrt(' + s[j + 1:]
        s = s.replace('^(1/2)', ')', 1)
        j = s.find('^(1/2)')
    return s

def re2sqrt(s):
    j = s.find("^(1/2)")
    while j != -1:
        j -= 1
        while '0'<=s[j]<='9':
            j=j-1
        if (j+1) < 0:
            s = 'sqrt('+s
        else:
            s = s[:j+1]+'sqrt('+s[j+1:]
        s = s.replace("^(1/2)",")",1)
        j = s.find("^(1/2)")
    return s