import re

def solve(s):
    pattern = re.compile(r'mul\(([0-9]{1,3}),([0-9]{1,3})\)')
    muls = [(int(m[0]), int(m[1])) for m in pattern.findall(s)]
    print(sum(x*y for x,y in muls))

def solve2(s):
    pattern = re.compile(r"mul\(([0-9]{1,3}),([0-9]{1,3})\)|(do)\(\)|(don't)\(\)")
    enabled = 1
    muls = []
    for x,y,do,dont in pattern.findall(s):
        if do:
            enabled = 1
        elif dont:
            enabled = 0
        else:
            if enabled:
                muls.append((int(x),int(y)))
            
    print(sum(x*y for x,y in muls))
        

sample = "xmul(2,4)%&mul[3,7]!@^do_not_mul(5,5)+mul(32,64]then(mul(11,8)mul(8,5))"
input = open("input").read()
solve(sample)
solve(input)

sample = "xmul(2,4)&mul[3,7]!^don't()_mul(5,5)+mul(32,64](mul(11,8)undo()?mul(8,5))"
solve2(sample)
solve2(input)