feat: add solution for 2023, Day 2: Cube Conundrum

This commit is contained in:
Dan Anglin 2023-12-02 17:00:27 +00:00
parent 648ebcab4e
commit b8dba2d4e4
Signed by: dananglin
GPG key ID: 0C1D44CFBEE68638
5 changed files with 441 additions and 0 deletions

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2023/day-2/files/input Normal file
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Game 1: 7 blue, 6 green, 3 red; 3 red, 5 green, 1 blue; 1 red, 5 green, 8 blue; 3 red, 1 green, 5 blue
Game 2: 9 green, 1 blue, 12 red; 1 blue, 18 green, 8 red; 2 blue, 6 green, 13 red; 3 blue, 13 red, 7 green; 5 blue, 4 red, 4 green; 6 blue, 7 green, 4 red
Game 3: 5 blue, 9 red, 14 green; 10 green, 3 blue; 11 red, 2 blue, 8 green; 5 red, 2 blue; 5 blue, 7 green, 8 red
Game 4: 2 red, 3 blue, 2 green; 17 green, 6 blue, 1 red; 3 blue, 5 green, 1 red; 4 red, 1 blue, 16 green; 5 red, 4 blue, 13 green; 14 green, 5 blue, 6 red
Game 5: 3 red, 17 green, 10 blue; 9 blue, 5 green; 14 green, 9 blue, 11 red
Game 6: 4 green, 18 blue, 3 red; 6 green, 8 blue, 9 red; 4 green, 9 blue, 7 red; 9 red, 1 green, 12 blue
Game 7: 1 blue, 14 green; 1 red, 4 blue, 15 green; 3 blue, 6 green; 3 blue, 2 green, 1 red; 1 red, 3 green, 1 blue
Game 8: 10 red, 3 blue, 3 green; 5 blue, 7 red, 3 green; 3 red, 3 green, 11 blue; 1 red, 7 green, 10 blue; 13 blue, 5 green, 5 red; 1 green, 17 blue, 3 red
Game 9: 1 blue, 6 green; 7 green, 2 red; 3 red, 2 green; 1 blue, 4 red, 3 green; 7 green, 1 blue, 1 red
Game 10: 14 green, 6 blue, 1 red; 8 green, 5 red, 1 blue; 8 green, 5 blue, 5 red; 2 green, 3 blue, 5 red
Game 11: 1 blue, 2 green; 1 blue, 1 green, 7 red; 1 blue, 4 green, 7 red; 2 red, 2 green, 1 blue
Game 12: 5 blue, 12 green, 12 red; 11 green, 3 red; 14 green, 3 blue, 18 red
Game 13: 2 green, 6 red; 6 red, 5 blue; 7 red, 3 blue, 8 green; 7 red, 8 green; 3 blue, 2 green, 3 red; 1 blue, 8 red, 6 green
Game 14: 18 green, 6 blue, 5 red; 5 blue, 15 red, 19 green; 7 green, 11 blue, 20 red; 5 red, 18 green, 7 blue
Game 15: 3 red, 16 green, 1 blue; 11 green, 6 red, 1 blue; 12 green, 2 red; 17 green, 1 blue, 14 red
Game 16: 3 red, 2 green, 5 blue; 1 green, 6 blue, 1 red; 1 green, 2 blue, 3 red; 1 blue, 1 red; 5 blue, 1 green, 2 red
Game 17: 3 blue, 6 red; 1 blue, 2 red; 1 blue, 1 green, 7 red; 1 green, 7 red, 2 blue; 7 red, 1 blue; 1 green, 8 red, 1 blue
Game 18: 6 green, 10 red; 6 red, 7 green; 10 red, 11 green; 10 red, 2 blue, 5 green
Game 19: 2 blue; 1 blue, 4 green, 6 red; 7 green, 6 red, 2 blue; 2 blue, 5 red, 4 green; 1 green, 10 red
Game 20: 6 red, 5 green, 10 blue; 5 blue, 5 green, 9 red; 7 blue, 3 green, 3 red; 9 blue, 12 red, 1 green
Game 21: 4 red, 18 blue, 14 green; 3 green, 14 blue, 5 red; 5 green, 12 blue; 1 blue, 2 red, 1 green; 5 red, 11 green, 7 blue; 17 green, 4 red, 15 blue
Game 22: 1 blue, 14 green, 4 red; 7 green, 10 red; 9 green, 1 blue, 9 red; 1 blue, 8 green, 5 red
Game 23: 4 blue, 5 green, 2 red; 6 blue, 8 red, 4 green; 4 blue, 17 red, 14 green
Game 24: 3 green, 8 blue; 3 blue, 5 green, 13 red; 17 red, 4 green
Game 25: 19 red, 9 blue, 1 green; 3 green, 18 red, 6 blue; 1 green, 7 red, 7 blue; 8 blue, 1 red
Game 26: 10 green, 12 blue, 2 red; 9 red; 10 blue, 12 green, 9 red
Game 27: 2 blue, 8 green, 6 red; 5 green, 9 red; 4 red, 11 green
Game 28: 10 blue, 20 red; 14 blue, 3 green, 2 red; 9 red, 12 blue, 1 green
Game 29: 4 red, 1 blue, 2 green; 1 green, 6 red, 1 blue; 15 red
Game 30: 1 red, 13 blue, 6 green; 3 blue, 4 green; 19 blue, 11 green; 1 red, 11 green, 14 blue
Game 31: 10 red, 12 green; 12 green, 10 red; 2 blue, 15 red, 12 green; 2 green, 2 blue, 15 red; 9 green, 5 red, 2 blue
Game 32: 5 blue, 5 green, 8 red; 5 green, 6 red; 5 blue, 8 red, 4 green; 5 green, 3 blue, 6 red
Game 33: 1 red, 9 green, 5 blue; 17 green, 4 blue; 3 green, 2 blue; 10 green, 2 blue; 1 blue, 4 green; 2 green, 9 blue
Game 34: 11 blue, 11 red, 9 green; 13 red, 3 blue, 5 green; 9 green, 12 blue, 5 red; 13 red, 8 blue, 5 green
Game 35: 1 green, 3 red, 7 blue; 1 red, 3 green, 9 blue; 1 blue, 2 green, 1 red; 11 blue, 5 red, 6 green
Game 36: 4 blue, 12 green, 16 red; 7 blue, 11 green; 8 green, 5 blue, 1 red; 14 green, 3 red
Game 37: 13 red, 5 blue, 9 green; 1 red, 10 blue, 14 green; 1 green, 2 blue, 10 red; 13 red, 10 blue; 1 blue, 8 green
Game 38: 3 red, 4 blue, 8 green; 1 red, 11 blue, 4 green; 13 blue, 8 green; 3 red, 3 green, 10 blue; 1 red, 1 blue, 1 green; 1 green, 2 red, 10 blue
Game 39: 9 red, 7 blue, 1 green; 15 red, 4 green, 1 blue; 2 green, 8 blue, 7 red; 6 blue, 11 red; 12 red, 2 blue, 7 green
Game 40: 13 red, 3 green, 1 blue; 3 green, 10 red; 16 red
Game 41: 1 blue, 3 red; 7 blue, 5 red, 3 green; 4 red, 3 blue, 2 green; 2 blue, 5 red, 1 green; 3 green, 4 red, 3 blue; 5 blue, 2 red
Game 42: 1 red, 4 green; 11 red, 4 green; 13 red; 1 blue, 10 red; 1 blue, 2 red, 4 green
Game 43: 11 green, 13 red, 1 blue; 11 green, 9 red, 2 blue; 7 green; 13 green, 15 red; 1 blue, 14 green
Game 44: 5 green, 14 blue, 15 red; 13 blue, 15 green; 9 green, 15 red, 6 blue
Game 45: 16 red, 8 blue; 1 green, 4 blue, 6 red; 4 blue, 8 red; 12 red, 3 blue, 3 green; 2 green, 4 red, 4 blue; 2 green, 8 blue, 10 red
Game 46: 12 blue, 3 green, 12 red; 9 red, 9 blue; 3 green, 12 red; 10 red, 6 green; 2 red, 7 blue
Game 47: 9 green, 6 red; 1 blue, 7 red, 10 green; 1 green, 2 red; 1 red, 3 green
Game 48: 9 blue, 5 green, 13 red; 14 green, 4 red; 15 red, 9 green, 1 blue; 4 blue, 6 red, 13 green; 9 green, 8 blue, 8 red
Game 49: 5 blue, 3 red; 1 green, 2 red, 5 blue; 1 green, 7 blue; 3 green
Game 50: 8 red, 6 green; 10 blue, 4 green, 6 red; 8 green, 11 blue, 9 red
Game 51: 5 blue; 13 blue; 1 red, 2 blue, 1 green; 1 red, 8 blue
Game 52: 7 blue; 1 red, 2 green, 12 blue; 1 red, 5 blue; 2 red, 7 blue, 4 green; 3 green, 2 red, 2 blue
Game 53: 10 blue, 12 red; 3 green, 5 blue, 3 red; 14 red, 4 green, 7 blue; 1 red, 14 blue
Game 54: 2 blue, 14 red, 3 green; 3 green, 7 red; 2 blue, 3 green, 9 red; 3 green, 7 red; 1 green, 14 red, 1 blue
Game 55: 3 green, 9 red, 12 blue; 5 blue, 5 green, 2 red; 7 green, 14 red, 12 blue
Game 56: 1 blue, 3 red, 4 green; 5 red, 8 green, 1 blue; 3 green, 1 blue, 2 red
Game 57: 8 blue, 13 red, 2 green; 3 blue, 5 red; 7 red, 2 green; 2 red, 5 blue, 3 green; 1 green, 4 blue
Game 58: 4 green, 3 red, 2 blue; 5 green, 2 blue, 10 red; 11 green, 1 red, 2 blue; 4 red, 5 green
Game 59: 5 green; 4 green, 2 blue; 1 red, 9 green; 7 green, 2 blue; 16 green, 1 blue
Game 60: 6 green, 5 blue, 1 red; 5 blue, 3 green, 6 red; 1 green, 5 blue, 14 red; 6 red, 4 blue, 3 green
Game 61: 2 green, 6 red, 6 blue; 6 blue, 3 red; 1 green, 2 red, 2 blue; 1 red, 2 green; 5 red, 1 green, 2 blue; 2 green, 6 red, 6 blue
Game 62: 18 green, 8 blue, 1 red; 8 green, 4 red; 13 blue, 1 red, 3 green; 7 blue, 2 green, 4 red; 4 blue, 12 green, 5 red; 12 green, 11 blue
Game 63: 2 red, 3 blue; 10 green, 13 red, 1 blue; 11 red, 3 green, 4 blue
Game 64: 1 green, 16 red; 17 blue, 9 red, 1 green; 14 red, 7 blue
Game 65: 7 blue, 11 red, 11 green; 7 red, 11 green; 3 blue, 13 red, 11 green; 5 green, 6 blue; 11 blue, 8 red, 3 green
Game 66: 3 blue, 1 green, 3 red; 5 blue, 2 green, 5 red; 1 blue, 2 green, 7 red; 2 blue, 6 red; 7 red, 2 green, 2 blue; 2 red
Game 67: 1 blue, 6 red, 2 green; 1 blue, 10 green, 6 red; 8 red, 2 blue, 4 green; 7 green, 9 red, 1 blue; 8 red, 7 green; 5 green, 1 blue
Game 68: 15 blue, 8 green, 2 red; 6 blue, 2 green; 5 red, 6 green, 8 blue; 6 red, 11 green, 7 blue; 1 red, 3 blue; 5 red, 6 green, 5 blue
Game 69: 5 blue, 4 green; 1 green, 11 red, 9 blue; 4 green, 15 blue, 6 red; 11 blue, 4 green, 5 red; 8 red, 3 green; 5 blue, 8 red
Game 70: 5 blue, 4 red, 8 green; 6 blue, 6 green; 14 blue, 7 red, 1 green; 2 green, 6 blue, 3 red; 7 red, 11 blue, 3 green
Game 71: 13 red, 6 blue, 10 green; 7 red, 12 green; 9 green, 14 red, 2 blue
Game 72: 9 red, 3 green, 3 blue; 8 red, 7 blue, 5 green; 3 blue, 2 green, 1 red; 1 red, 2 blue, 2 green; 10 red, 7 green, 6 blue
Game 73: 4 green, 3 red; 1 red; 2 red, 2 blue, 2 green; 1 blue, 3 red, 1 green; 2 blue, 3 red, 2 green; 1 red, 1 blue
Game 74: 12 green, 4 red, 4 blue; 3 red, 13 green; 1 red, 13 green, 1 blue; 1 red, 3 blue, 6 green; 6 blue, 5 red, 4 green; 7 blue, 5 green, 1 red
Game 75: 11 red, 1 green; 12 blue, 1 red; 2 blue, 1 green, 4 red; 11 red; 12 red, 6 green, 10 blue; 4 green, 5 blue, 7 red
Game 76: 2 blue, 5 red, 6 green; 1 red, 10 green, 11 blue; 7 red, 11 green; 4 red, 10 blue, 10 green; 7 blue, 16 green, 2 red
Game 77: 2 blue, 11 red, 4 green; 6 green, 3 blue, 2 red; 2 blue, 2 red, 7 green; 8 red, 14 blue, 5 green; 5 green, 2 blue, 18 red
Game 78: 9 red, 7 green, 6 blue; 12 blue, 6 red; 1 red, 15 blue, 7 green; 3 blue, 11 green, 1 red
Game 79: 3 blue; 1 blue; 1 red, 1 blue, 1 green; 3 blue; 5 blue, 1 red; 1 blue, 1 green, 1 red
Game 80: 18 blue, 13 green, 7 red; 18 blue, 3 green, 3 red; 2 red, 9 blue, 14 green
Game 81: 11 blue, 6 green, 3 red; 8 green, 12 red, 10 blue; 5 red, 4 blue, 13 green
Game 82: 2 blue, 3 red; 4 blue, 17 red; 9 red; 12 red; 1 green, 6 blue, 7 red; 20 red
Game 83: 1 blue, 1 red; 3 red, 1 blue; 3 red, 5 green; 1 blue, 2 green, 4 red; 5 green, 3 blue, 2 red
Game 84: 4 red, 2 blue, 2 green; 8 red, 10 blue; 1 green, 15 red, 8 blue
Game 85: 15 green; 11 red, 2 blue, 5 green; 8 red, 2 blue, 12 green; 15 red, 10 green; 10 red, 15 green; 17 red, 1 blue, 11 green
Game 86: 6 blue, 1 red; 2 green, 1 red, 8 blue; 2 green, 10 blue; 10 blue, 2 green; 1 red, 5 blue
Game 87: 4 red, 4 blue; 18 red, 8 blue; 16 red; 4 red, 1 green, 3 blue; 14 red, 9 blue
Game 88: 11 green, 7 blue, 4 red; 3 red; 2 blue, 12 red, 19 green; 13 red, 3 blue, 2 green
Game 89: 1 green, 1 red; 1 blue, 1 red, 6 green; 6 green, 3 red; 5 green, 2 red, 6 blue; 7 blue, 2 red, 8 green; 1 red, 2 blue
Game 90: 3 green, 3 red, 3 blue; 5 green, 2 blue, 3 red; 1 blue, 2 red; 11 green, 1 blue, 2 red; 1 green, 3 blue, 4 red
Game 91: 7 blue, 2 red; 2 blue, 1 red, 1 green; 6 blue, 1 red; 1 red, 7 blue
Game 92: 11 green, 16 blue; 17 red, 7 blue, 9 green; 11 green, 3 blue, 12 red; 2 blue, 1 green, 6 red
Game 93: 6 red, 1 blue, 3 green; 1 blue, 8 red, 7 green; 3 red, 5 green; 1 red, 2 green; 3 red, 7 green; 2 green, 15 red, 1 blue
Game 94: 7 blue, 2 red, 2 green; 9 blue, 4 red, 2 green; 9 blue, 5 red, 3 green; 1 blue, 4 red, 3 green; 4 red, 1 green, 7 blue; 9 blue, 3 green, 3 red
Game 95: 1 blue, 2 green, 2 red; 6 green, 6 red, 1 blue; 3 blue, 5 red, 2 green; 1 blue; 5 green, 2 red, 2 blue
Game 96: 3 blue, 6 red, 5 green; 5 blue, 8 green, 9 red; 2 red, 5 green, 1 blue; 6 green, 4 blue, 3 red; 2 green, 2 blue; 6 blue, 4 green
Game 97: 6 green, 8 blue, 5 red; 9 green, 6 blue; 3 green, 3 blue; 2 blue, 10 green, 4 red
Game 98: 11 blue, 1 green, 9 red; 5 green, 1 blue, 6 red; 13 blue, 6 green, 10 red; 6 blue, 4 green, 9 red
Game 99: 4 red, 3 green, 3 blue; 6 blue, 4 green, 11 red; 3 green, 15 red; 1 blue, 6 green, 14 red
Game 100: 14 green, 6 blue, 12 red; 2 green, 1 blue, 2 red; 12 red, 7 blue, 3 green; 1 blue, 12 red, 8 green

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package main
import (
"fmt"
"strconv"
"strings"
)
type Game struct {
ID int
Sets []Set
}
type Set struct {
Red int
Green int
Blue int
}
func parseGame(line string) (Game, error) {
splits := strings.SplitN(strings.ReplaceAll(line, " ", ""), ":", 2)
if len(splits) != 2 {
return Game{}, fmt.Errorf("unexpected number of splits from %s; want 2; got %d", splits, len(splits))
}
gameStr, setsStr := splits[0], splits[1]
gameID, err := parseGameID(gameStr)
if err != nil {
return Game{}, fmt.Errorf("unable to parse the Game ID; %w", err)
}
sets, err := parseSets(setsStr)
if err != nil {
return Game{}, fmt.Errorf("unable to parse the sets; %w", err)
}
game := Game{
ID: gameID,
Sets: sets,
}
return game, nil
}
func parseGameID(game string) (int, error) {
id, err := strconv.Atoi(strings.TrimPrefix(game, "Game"))
if err != nil {
return 0, fmt.Errorf("error running strconv.Atoi(); %w", err)
}
return id, nil
}
func parseSets(str string) ([]Set, error) {
setList := strings.Split(str, ";")
var sets []Set
const (
red = "red"
green = "green"
blue = "blue"
)
for _, s := range setList {
set := Set{0, 0, 0}
split := strings.Split(s, ",")
for _, i := range split {
switch {
case strings.HasSuffix(i, red):
value, err := strconv.Atoi(strings.TrimSuffix(i, red))
if err != nil {
return nil, fmt.Errorf("unable to run strconv.Atoi() on %s; %w", i, err)
}
set.Red = value
case strings.HasSuffix(i, green):
value, err := strconv.Atoi(strings.TrimSuffix(i, green))
if err != nil {
return nil, fmt.Errorf("unable to run strconv.Atoi() on %s; %w", i, err)
}
set.Green = value
case strings.HasSuffix(i, "blue"):
value, err := strconv.Atoi(strings.TrimSuffix(i, blue))
if err != nil {
return nil, fmt.Errorf("unable to run strconv.Atoi() on %s; %w", i, err)
}
set.Blue = value
}
}
sets = append(sets, set)
}
return sets, nil
}

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2023/day-2/game_test.go Normal file
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package main
import (
"reflect"
"testing"
)
func TestParseGame(t *testing.T) {
table := []struct {
testGame string
want Game
}{
{
testGame: "Game1: 10 green, 1 blue, 7red",
want: Game{
ID: 1,
Sets: []Set{
{
Red: 7,
Green: 10,
Blue: 1,
},
},
},
},
{
testGame: "Game 100: 8 green, 6 blue, 20red; 5 blue, 4 red, 13green; 5 green, 1 red",
want: Game{
ID: 100,
Sets: []Set{
{
Red: 20,
Green: 8,
Blue: 6,
},
{
Red: 4,
Green: 13,
Blue: 5,
},
{
Red: 1,
Green: 5,
Blue: 0,
},
},
},
},
}
for i := range table {
got, err := parseGame(table[i].testGame)
if err != nil {
t.Fatalf("Error running parseGame(); %v", err)
}
if !reflect.DeepEqual(table[i].want, got) {
t.Errorf("unexpected result after parsing the game; want %+v, got %+v", table[i].want, got)
}
}
}

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package main
import (
"bufio"
"fmt"
"io"
"log"
"os"
)
func main() {
filename := "2023/day-2/files/input"
file1, err := os.Open(filename)
if err != nil {
log.Fatalf("ERROR: unable to open %s, %v\n", filename, err)
}
defer file1.Close()
sumOfIDs, err := sumOfGameIDs(file1)
if err != nil {
log.Fatalf("ERROR: unable to calculate the sum of the IDs of the valid games; %v\n", err)
}
fmt.Printf("Total sum of the IDs of the valid games: %d\n", sumOfIDs)
file2, err := os.Open(filename)
if err != nil {
log.Fatalf("ERROR: unable to open %s, %v\n", filename, err)
}
defer file2.Close()
sumOfPower, err := sumOfThePowerOfTheCubes(file2)
if err != nil {
log.Fatalf("ERROR: unable to calculate the sum of the power of cubes; %v\n", err)
}
fmt.Printf("Total sum of the power of cubes: %d\n", sumOfPower)
}
// sumOfGameIDs solves Part 1
func sumOfGameIDs(r io.Reader) (int, error) {
scanner := bufio.NewScanner(r)
sum := 0
for scanner.Scan() {
line := scanner.Text()
if len(line) == 0 {
continue
}
game, err := parseGame(line)
if err != nil {
return 0, fmt.Errorf("unable to parse %q; %w", game, err)
}
if validGame(game.Sets) {
sum = sum + game.ID
}
}
if err := scanner.Err(); err != nil {
return 0, fmt.Errorf("received an error after scanning file; %w", err)
}
return sum, nil
}
// sumOfThePowerOfTheCubes solves Part 2
func sumOfThePowerOfTheCubes(r io.Reader) (int, error) {
scanner := bufio.NewScanner(r)
sum := 0
for scanner.Scan() {
line := scanner.Text()
if len(line) == 0 {
continue
}
game, err := parseGame(line)
if err != nil {
return 0, fmt.Errorf("unable to parse %q; %w", game, err)
}
fewestCubeSet := fewestSet(game.Sets)
sum = sum + (fewestCubeSet.Red * fewestCubeSet.Green * fewestCubeSet.Blue)
}
if err := scanner.Err(); err != nil {
return 0, fmt.Errorf("received an error after scanning file; %w", err)
}
return sum, nil
}
func validGame(sets []Set) bool {
const (
maxRed = 12
maxGreen = 13
maxBlue = 14
)
for _, set := range sets {
switch {
case set.Red > maxRed:
return false
case set.Blue > maxBlue:
return false
case set.Green > maxGreen:
return false
}
}
return true
}
func fewestSet(sets []Set) Set {
result := Set{0, 0, 0}
for _, set := range sets {
if set.Red > result.Red {
result.Red = set.Red
}
if set.Green > result.Green {
result.Green = set.Green
}
if set.Blue > result.Blue {
result.Blue = set.Blue
}
}
return result
}

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package main
import (
"bytes"
"testing"
)
var testStr = `
Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green
`
func TestSumOfGameIDs(t *testing.T) {
buf := bytes.NewBufferString(testStr)
got, err := sumOfGameIDs(buf)
if err != nil {
t.Fatalf("Received an error after running sumOfGameIDs(); %v\n", err)
}
want := 8
if got != want {
t.Errorf("unexpected result received from sumOfGameIDs(); want %d, got %d\n", want, got)
}
}
func TestSumOfThePowerOfTheCubes(t *testing.T) {
buf := bytes.NewBufferString(testStr)
got, err := sumOfThePowerOfTheCubes(buf)
if err != nil {
t.Fatalf("Received an error after running sumOfThePowerOfTheCubes(); %v\n", err)
}
want := 2286
if got != want {
t.Errorf("unexpected result received from sumOfThePowerOfTheCubes(); want %d; got %d", want, got)
}
}