2021 Day 24 Complete
This commit is contained in:
parent
4e315c79a4
commit
fa7d2a9c0a
@ -1,220 +1,54 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"fmt"
|
||||
"math"
|
||||
"os"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
h "git.bullercodeworks.com/brian/adventofcode/helpers"
|
||||
)
|
||||
|
||||
func main() {
|
||||
fmt.Println("ALU")
|
||||
if len(os.Args) < 2 {
|
||||
fmt.Println("Must pass filename as argument")
|
||||
os.Exit(1)
|
||||
}
|
||||
test(os.Args[1])
|
||||
//part1(os.Args[1])
|
||||
inp := h.StdinToStringSlice()
|
||||
solve(1, inp)
|
||||
fmt.Println("")
|
||||
solve(2, inp)
|
||||
}
|
||||
|
||||
func test(fn string) {
|
||||
fmt.Println("# Test")
|
||||
num := "15"
|
||||
alu := NewALU()
|
||||
alu.ReadProgram(fn)
|
||||
var done bool
|
||||
for !done {
|
||||
fmt.Println("Converting", num)
|
||||
alu.BufferInput(strings.Split(num, ""))
|
||||
alu.run()
|
||||
if num == "0" {
|
||||
done = true
|
||||
}
|
||||
num = decNum(num, len(num)-1)
|
||||
}
|
||||
type pair struct {
|
||||
first int
|
||||
second int
|
||||
}
|
||||
|
||||
func decNum(num string, idx int) string {
|
||||
if idx < 0 {
|
||||
return num
|
||||
}
|
||||
if len(num) < idx {
|
||||
return num
|
||||
}
|
||||
if num[idx] == '0' && idx > 0 {
|
||||
num = num[:idx] + "9" + num[idx+1:]
|
||||
return decNum(num, idx-1)
|
||||
}
|
||||
num = num[:idx] + string(num[idx]-1) + num[idx+1:]
|
||||
return num
|
||||
}
|
||||
|
||||
func part1(fn string) {
|
||||
fmt.Println("# Part 1")
|
||||
var done bool
|
||||
num := "99999999999999"
|
||||
alu := NewALU()
|
||||
alu.ReadProgram(fn)
|
||||
for !done {
|
||||
fmt.Println("Checking Model No.", num)
|
||||
alu.BufferInput(strings.Split(num, ""))
|
||||
alu.run()
|
||||
if alu.registers["z"] == 0 {
|
||||
fmt.Println("-> It's good.")
|
||||
done = true
|
||||
}
|
||||
num = decModelNum(num, len(num)-1)
|
||||
}
|
||||
}
|
||||
|
||||
func decModelNum(num string, idx int) string {
|
||||
if len(num) < idx {
|
||||
return num
|
||||
}
|
||||
if num[idx] == '1' {
|
||||
num = num[:idx] + "9" + num[idx+1:]
|
||||
return decModelNum(num, idx-1)
|
||||
}
|
||||
num = num[:idx] + string(num[idx]-1) + num[idx+1:]
|
||||
return num
|
||||
}
|
||||
|
||||
const (
|
||||
INPUT_MODE_USER = iota
|
||||
INPUT_MODE_CHAN
|
||||
)
|
||||
|
||||
type ALU struct {
|
||||
program []string
|
||||
registers map[string]int
|
||||
ptr int
|
||||
inputMode int
|
||||
inputChan chan string
|
||||
}
|
||||
|
||||
func NewALU() *ALU {
|
||||
return &ALU{
|
||||
registers: map[string]int{"w": 0, "x": 0, "y": 0, "z": 0},
|
||||
ptr: 0,
|
||||
inputChan: make(chan string, 14),
|
||||
}
|
||||
}
|
||||
|
||||
func (alu *ALU) BufferInput(inp []string) {
|
||||
alu.inputMode = INPUT_MODE_CHAN
|
||||
for i := range inp {
|
||||
alu.inputChan <- inp[i]
|
||||
}
|
||||
}
|
||||
|
||||
func (alu *ALU) ReadProgram(fn string) error {
|
||||
file, err := os.Open(fn)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer file.Close()
|
||||
|
||||
var lines []string
|
||||
scanner := bufio.NewScanner(file)
|
||||
for scanner.Scan() {
|
||||
lines = append(lines, scanner.Text())
|
||||
}
|
||||
alu.program = lines
|
||||
return scanner.Err()
|
||||
}
|
||||
|
||||
func (alu *ALU) printRegisters() {
|
||||
fmt.Printf("Registers:\nw: %d\nx: %d\ny: %d\nz: %d\n", alu.registers["w"], alu.registers["x"], alu.registers["y"], alu.registers["z"])
|
||||
}
|
||||
|
||||
func (alu *ALU) run() {
|
||||
for alu.ptr = 0; alu.ptr < len(alu.program); alu.ptr++ {
|
||||
pts := strings.Split(alu.program[alu.ptr], " ")
|
||||
switch pts[0] {
|
||||
case "inp":
|
||||
alu.registers[pts[1]] = alu.inp()
|
||||
case "add":
|
||||
alu.registers[pts[1]] = alu.add(alu.value(pts[1]), alu.value(pts[2]))
|
||||
case "mul":
|
||||
alu.registers[pts[1]] = alu.mul(alu.value(pts[1]), alu.value(pts[2]))
|
||||
case "div":
|
||||
alu.registers[pts[1]] = alu.div(alu.value(pts[1]), alu.value(pts[2]))
|
||||
case "mod":
|
||||
alu.registers[pts[1]] = alu.mod(alu.value(pts[1]), alu.value(pts[2]))
|
||||
case "eql":
|
||||
alu.registers[pts[1]] = alu.eql(alu.value(pts[1]), alu.value(pts[2]))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (alu *ALU) inp() int {
|
||||
if alu.inputMode == INPUT_MODE_USER {
|
||||
var inp string
|
||||
var err error
|
||||
var v int
|
||||
for inp == "" || err != nil {
|
||||
fmt.Println("Input value:")
|
||||
reader := bufio.NewReader(os.Stdin)
|
||||
inp, _ = reader.ReadString('\n')
|
||||
inp = strings.TrimSpace(inp)
|
||||
v, err = strconv.Atoi(inp)
|
||||
if err != nil {
|
||||
fmt.Println("Must be an integer.")
|
||||
func solve(part int, inp []string) {
|
||||
var model [14]int
|
||||
var stack []pair
|
||||
for i := 0; i < 14; i++ {
|
||||
xAdd := h.Atoi(strings.Fields(inp[18*i+5])[2])
|
||||
yAdd := h.Atoi(strings.Fields(inp[18*i+15])[2])
|
||||
if xAdd > 0 {
|
||||
stack = append(stack, pair{first: yAdd, second: i})
|
||||
} else {
|
||||
var s pair
|
||||
var toAdd int
|
||||
s, stack = stack[len(stack)-1], stack[:len(stack)-1]
|
||||
if part == 1 {
|
||||
toAdd = 9
|
||||
for toAdd+s.first+xAdd > 9 {
|
||||
toAdd--
|
||||
}
|
||||
} else if part == 2 {
|
||||
toAdd = 1
|
||||
for toAdd+s.first+xAdd < 1 {
|
||||
toAdd++
|
||||
}
|
||||
}
|
||||
}
|
||||
return v
|
||||
} else if alu.inputMode == INPUT_MODE_CHAN {
|
||||
v, err := strconv.Atoi(<-alu.inputChan)
|
||||
if err == nil {
|
||||
return v
|
||||
model[s.second] = toAdd
|
||||
model[i] = toAdd + s.first + xAdd
|
||||
}
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (alu *ALU) value(a string) int {
|
||||
switch a {
|
||||
case "w", "x", "y", "z":
|
||||
return alu.registers[a]
|
||||
default:
|
||||
return h.Atoi(a)
|
||||
fmt.Println("# Part", part)
|
||||
for i := range model {
|
||||
fmt.Print(model[i])
|
||||
}
|
||||
}
|
||||
|
||||
func (alu *ALU) add(a, b int) int {
|
||||
return a + b
|
||||
}
|
||||
|
||||
func (alu *ALU) mul(a, b int) int {
|
||||
return a * b
|
||||
}
|
||||
|
||||
func (alu *ALU) div(a, b int) int {
|
||||
if b == 0 {
|
||||
return 0
|
||||
}
|
||||
aD, bD := float64(a), float64(b)
|
||||
d := aD / bD
|
||||
if d > 0 {
|
||||
return int(math.Floor(d))
|
||||
}
|
||||
return int(math.Ceil(d))
|
||||
}
|
||||
|
||||
func (alu *ALU) mod(a, b int) int {
|
||||
if a < 0 || b <= 0 {
|
||||
return 0
|
||||
}
|
||||
return a % b
|
||||
}
|
||||
|
||||
func (alu *ALU) eql(a, b int) int {
|
||||
if a == b {
|
||||
return 1
|
||||
}
|
||||
return 0
|
||||
fmt.Println()
|
||||
}
|
||||
|
||||
18
2021/day24/parts.csv
Normal file
18
2021/day24/parts.csv
Normal file
@ -0,0 +1,18 @@
|
||||
inp w,inp w,inp w,inp w,inp w,inp w,inp w,inp w,inp w,inp w,inp w,inp w,inp w,inp w
|
||||
mul x 0,mul x 0,mul x 0,mul x 0,mul x 0,mul x 0,mul x 0,mul x 0,mul x 0,mul x 0,mul x 0,mul x 0,mul x 0,mul x 0
|
||||
add x z,add x z,add x z,add x z,add x z,add x z,add x z,add x z,add x z,add x z,add x z,add x z,add x z,add x z
|
||||
mod x 26,mod x 26,mod x 26,mod x 26,mod x 26,mod x 26,mod x 26,mod x 26,mod x 26,mod x 26,mod x 26,mod x 26,mod x 26,mod x 26
|
||||
div z 1,div z 1,div z 1,div z 26,div z 1,div z 26,div z 1,div z 1,div z 1,div z 26,div z 26,div z 26,div z 26,div z 26
|
||||
add x 10,add x 13,add x 13,add x -11,add x 11,add x -4,add x 12,add x 12,add x 15,add x -2,add x -5,add x -11,add x -13,add x -10
|
||||
eql x w,eql x w,eql x w,eql x w,eql x w,eql x w,eql x w,eql x w,eql x w,eql x w,eql x w,eql x w,eql x w,eql x w
|
||||
eql x 0,eql x 0,eql x 0,eql x 0,eql x 0,eql x 0,eql x 0,eql x 0,eql x 0,eql x 0,eql x 0,eql x 0,eql x 0,eql x 0
|
||||
mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0
|
||||
add y 25,add y 25,add y 25,add y 25,add y 25,add y 25,add y 25,add y 25,add y 25,add y 25,add y 25,add y 25,add y 25,add y 25
|
||||
mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x
|
||||
add y 1,add y 1,add y 1,add y 1,add y 1,add y 1,add y 1,add y 1,add y 1,add y 1,add y 1,add y 1,add y 1,add y 1
|
||||
mul z y,mul z y,mul z y,mul z y,mul z y,mul z y,mul z y,mul z y,mul z y,mul z y,mul z y,mul z y,mul z y,mul z y
|
||||
mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0,mul y 0
|
||||
add y w,add y w,add y w,add y w,add y w,add y w,add y w,add y w,add y w,add y w,add y w,add y w,add y w,add y w
|
||||
add y 13,add y 10,add y 3,add y 1,add y 9,add y 3,add y 5,add y 1,add y 0,add y 13,add y 7,add y 15,add y 12,add y 8
|
||||
mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x,mul y x
|
||||
add z y,add z y,add z y,add z y,add z y,add z y,add z y,add z y,add z y,add z y,add z y,add z y,add z y,add z y
|
||||
|
Loading…
Reference in New Issue
Block a user