package main

import (
	"fmt"
	"os"
	"strconv"
	"strings"
)

func check(e error) {
	if e != nil {
		panic(e)
	}
}

func parseInput() []string {
	raw_data, err := os.ReadFile("input.txt")
	check(err)
	data := string(raw_data[:])
	lines := strings.Split(strings.TrimSpace(data), "\n")
	return lines
}

func part1() {
	output := 0
	for _, bank := range parseInput() {
		max := 0
		for i, n1 := range bank[:len(bank)-1] {
			for _, n2 := range bank[i+1:] {
				new_value, err := strconv.Atoi(string(n1) + string(n2))
				check(err)
				if new_value > max {
					max = new_value
				}
			}
		}
		output = output + max
	}
	fmt.Println(output)
}

func main() {
	fmt.Println("Part 1:")
	part1()
}