#!/bin/python3
import sys,re
from pprint import pprint

input_f = 'input'

def list2int(x):
    return list(map(int, x))

part = 1
#########################################
#                                       #
#              Part 1                   #
#                                       #
#########################################

if part == 1:

    size = 256
    lengths = []
    skip = 0
    numbers = []
    pos = 0
    for i in range(0,size):
        numbers.append(i)

    with open(input_f) as file:
        for line in file:
            lengths = list2int(line.rsplit()[0].split(','))

    for ldx, length in enumerate(lengths):
        sub = [numbers[(pos + i) % len(numbers)] for i in range(length)]
        rev = sub[::-1]

        for i in range(length):
            numbers[(pos + i) % len(numbers)] = rev[i]

        pos += (length+skip) 
        pos = pos % len(numbers)
        skip += 1
    print(numbers[0]*numbers[1])

#########################################
#                                       #
#              Part 2                   #
#                                       #
#########################################
if part == 2:
    exit()