package be.vandewalleh.aoc.days

import be.vandewalleh.aoc.utils.BaseDay
import be.vandewalleh.aoc.utils.input.Day

@Day
class Day01 : BaseDay() {
    private val items by lazy { input.lines.ints }

    override fun part1(): Int {
        var count = 0
        for (i in 0 until items.size - 1) {
            if (items[i] < items[i + 1]) count++
        }
        return count
    }

    override fun part2(): Int {
        var count = 0
        for (i in 0 until items.size - 3) {
            val a = items.drop(i).take(3).sum()
            val b = items.drop(i + 1).take(3).sum()
            if (b > a) count++
        }
        return count
    }
}