def check():
    if cycle in [20, 60, 100, 140, 180, 220]:
        tempa = cycle * register
        checkpoints.append(tempa)


with open('input10.txt','r') as f:
    inp = f.read().splitlines(keepends=False)

cycle = 0
line = 0
register = 1
checkpoints = []
_sum = 0

while cycle < 220:
    ins = inp[line]
    line += 1
    if 'noop' in ins:
        cycle += 1
        check()
    elif 'addx' in ins:
        cycle += 1
        check()
        cycle += 1
        check()
        tempa, tempb = ins.split(' ')
        register += int(tempb)

for i in checkpoints:
    _sum += i

print(_sum)