import sys

def F(line, z) :
    line = line.split(z)
    s = ''
    for el in line :
        s += el
    return s

s = ''
for line in sys.stdin :
    s += line

s = ' ' + F(s, '\n') + ' '
stek = [0]
i = 1
ans = 'YES'
while True :
    if stek[len(stek)-1] == 0 :
        if s[i]+s[i+1] == '(*' :
            stek.append('(*')
            i += 1
        elif s[i] + s[i+1] == '*)' :
            ans = 'NO'
            break
        elif s[i] == '(' :
            stek.append('(')
        elif s[i] == ')' :
            ans = 'NO'
            break
    elif stek[len(stek)-1] == '(*' :
        if s[i] + s[i+1] == '*)' :
            stek.pop(len(stek)-1)
            i += 1
    elif stek[len(stek)-1] == '(' :
        if s[i] + s[i+1] == '(*' :
            stek.append('(*')
            i += 1
        elif s[i] == '(' :
            stek.append('(')
        elif s[i] == ')' :
            stek.pop(len(stek)-1)
        elif 47 <= ord(s[i]) <= 57 or 42<= ord(s[i]) <= 43 or ord(s[i]) == 61 or ord(s[i]) == 45 :
            exit
        else :
            ans = 'NO'
            break
    i += 1
    if i == len(s)-1 :
        break

if stek != [0] :
    ans = 'NO'
print(ans)