#!/usr/bin/env python
# 2022 - Advent Of Code 10


# file = 'input_example.txt'
# file = 'input_example2.txt'
file = 'input.txt'

cycle = 1
regX = 1

sumsig = 0


def check_cycle(c, r):
    if (c - 20) % 40 == 0:
        signal = cycle * r
        print(f'cycle {c}: {signal}')
        return signal
    return 0


with open(file, encoding="utf-8") as f:
    for line in f.readlines():
        if line.startswith('noop'):
            cycle += 1
            # print(cycle)
            sumsig += check_cycle(cycle, regX)
        else:
            value = int(line.strip().split(' ')[1])
            cycle += 1
            # print(cycle)
            sumsig += check_cycle(cycle, regX)

            cycle += 1
            regX += value
            sumsig += check_cycle(cycle, regX)
            # print(cycle)
        # print(cycle)

print(sumsig)