package main

import (
	"bufio"
	"fmt"
	"log"
	"os"
	"strings"
)

func main() {
	fname := "input.txt"
	if len(os.Args) > 1 {
		fname = os.Args[1]
	}
	f, err := os.Open(fname)
	if err != nil {
		log.Fatal(err)
	}
	defer f.Close()

	grid := [][]string{}
	scanner := bufio.NewScanner(f)
	for scanner.Scan() {
		line := scanner.Text()
		row := strings.Split(line, "")
		fmt.Println(row)
		grid = append(grid, [][]string{row}...)
	}
	fmt.Println(grid[0][0])

	if err := scanner.Err(); err != nil {
		log.Fatal(err)
	}
}