package main

import (
	"fmt"

	h "git.bullercodeworks.com/brian/adventofcode/helpers"
)

func main() {
	inp := h.StdinToIntSlice()
	fmt.Println("# Part 1")
	part1(inp)
	fmt.Println("# Part 2")
	part2(inp)
}

func part1(input []int) {
	for i := 0; i < len(input); i++ {
		for j := i + 1; j < len(input); j++ {
			if input[i]+input[j] == 2020 {
				fmt.Printf("Entries %d and %d sum to 2020\n", i, j)
				fmt.Printf("Answer: %d\n", input[i]*input[j])
				return
			}
		}
	}
}

func part2(input []int) {
	for i := 0; i < len(input); i++ {
		for j := i + 1; j < len(input); j++ {
			for k := j + 1; k < len(input); k++ {
				if input[i]+input[j]+input[k] == 2020 {
					fmt.Printf("Entries %d, %d, and %d sum to 2020\n", i, j, k)
					fmt.Printf("Answer: %d\n", input[i]*input[j]*input[k])
					return
				}
			}
		}
	}
}