Task 0 q5

#assigning values to letters
def strength(a):
    if a=='A':
        return 1
    elif a=='B':
        return 2
    else :
        return 3


#simple adding letter values to a variable and multiplying with numbers immediately followed by 
def sum(s):
    k=0
    for i in range(len(s)):
        if s[i-1] in ['A','B','C']:
            if i > len(s)-1 :
                k+=strength(s[i-1])
            elif s[i] in ['2','3','4','5','6','7','8','9']:
                k+=strength(s[i-1]) * int(s[i])
                i+=1
            else:
                k+=strength(s[i-1])
    return k



s=input()
#since () has zero value replacing ( to) so that it can be removed from string input
a=s.replace ( "(" , ')' )
b=a.split(")")
total_strength=0
for i in range (len(b)):
    total_strength+=sum(b[i-1])
print(total_strength)