2023 Day 14 Complete!
This commit is contained in:
parent
ed635d9088
commit
0c611fdc3b
100
2023/day14/input
Normal file
100
2023/day14/input
Normal file
@ -0,0 +1,100 @@
|
||||
O.O#..O.#...#..O.O#..O#...O..O.#...O#.OO.O...#....#.O.##..####.OOO....OO......##..........#O.#O.O.#.
|
||||
..O.#..#O...#..#.....O..O..OO..#.O..O#..#O#...#......O.O.O......#..OO##...O..#.O.O..#...#O....O.OO..
|
||||
....O#O#.O#...#..O.O#..#.....O....#.....OOO#OO.#....#...#.O.OOOO..#O.O##....##..O.....##.OOO.#..##..
|
||||
OO...OO...#..OOO..#....O.#.......##O....#..O.O#..#.O.#..O.#O.#.#..#....#...O.......O#O.....OOO###...
|
||||
..#...#...O.O....#..O.....#...OO.##O...#O...#.#.O#O.OO.OO.O...#O#...#.#...#.....O..#..O##.##.OO..#.O
|
||||
..#.#.O.#OO#...#.#O##O.OO..#......#OO....O........#OO#..O.O.....#.....O.O..O.#O#..O......O....O.##.#
|
||||
.....O..O......O...#.#.#.....#OOO##O.#O...O...O.O..#...#O##.OO......O......OO..O#..##......#OO#..O..
|
||||
...#...O.#O.......#.O....#..#.....#.O.#.....#..O..#.....O#..O#.O.O......O###O#..O...OO..##........##
|
||||
.......#O..O..O........#...#....O..#...#.....#.....#.#O.#.O...O#.....OO.O........#O#O.O..#.....O#O..
|
||||
OOO....OO..#O.O#....O#O....OO...O.O...O..O.#..O#........OO....#...#.....OO..O#....##OO#.O#O........O
|
||||
#.#......O..O...O###O.OO..##......#........O........O......O..O..O.....O.##.O...O..O..OO.O##O.O..#O.
|
||||
...O.............#.OO.O#.#.....O.O#..OO#.............O..OO.#.O.#O#.O....#..#........O.#.O.......O#..
|
||||
.............OO#.....O.O..O..O...O.O..#..#.#..O....OO#..OO..#.O..O#.....#.#....O.O...#.#O....#...O.#
|
||||
..O..#O.#.#OOO.....#O..OO.##....O..##.O.....O....O..#.#...O.O..O##...O...O..#..O.#O.##.......O...#..
|
||||
...O#.....O#O...O....OOO...#.#....##O.....OOO.##...OO.........#.#.#..O....#O#.OO.O........O.........
|
||||
.......#........#....OO........O...OO.##...O.#.....#....O..OO.O.#...OO..O...O..O....O.#....#.......#
|
||||
..#....#...##O..#....O#..O.O....#....#..###.#.O.....###..OO....#...OO.OOO#O...##...O.#O#...O...O.O..
|
||||
O#..O#...OO..#.......#....OOO...OO.O...OO...##.O..O##.O......#....#O.O..O#OOO.#.O#O.......OO...OO...
|
||||
OO.#.#...#..O.#.#.OO..OO.#O.#..O....OOO.#.....O.OO....O.#.#..##.....O.#...O......#OO#..O.O..#.....#.
|
||||
O.....O..O..........O....O..#..#...........#.#O.......#....O.#..##....#O#...#O.O...O#O..#O#..OO.#.O.
|
||||
.#.##....O.#...OO##O.#..O..OO........O...O......O#OO..OO.O...#..#.O#O.......O#...O.O#..#OOO.O...OO#.
|
||||
..O..#OO#O#.O..O..#......#.O..#...O..O..O...##O.O..##.....#O.O.OOO.O..O...O...O..O..O....#......#OO.
|
||||
...OOOO.#.#.O.OO#......#.#.O..O.#...O..O..#......#....##O.#.O.#O#O....###.#..#.....O#.O........O....
|
||||
..OO#.........OOO..........O...O..###...##...O........#....O.O#O....#...............#...O..O.O...#..
|
||||
.O......#O.OO.....O..#........O#OO.....O....O.O#.O.O...O....#..O#O....#.....O...O#O.O..#.OO..##.#.#.
|
||||
....O.O#..#...O#.O.O.#......OO..O#..#..#..##...O.#..###.O#.O..O#....O.#..O.O#..##O#....#O.OO#.#.....
|
||||
O##..#.....##...O......#..O....#O..#O...O.........O..OO......#.#OO##...#.....#......O.....O#..O..#..
|
||||
.##.O#O#O...O..#...........#OO....O.#.O.O.#.#O.#..#...O........O...#...#..OOO..##..O......O##O#.....
|
||||
...O...O#.....#O..#..#..O.#.##O..........#.O..###.O..O#O....O...O#O....OO.O..#.#.O#O#.....#.#.O.OO#O
|
||||
...O..#O.#O......O....O...O..O#......OO...#..O.OO.O.#..#..#......OOO..#.....OO....O..#.#O......O....
|
||||
.....#...##.....O#..O.....#O.#..OO..#.#..##....#.O.#......#.#O.O..O.O.......O......O#.O#O#...OO...#.
|
||||
......##.O#....O#.....O......#OO#...O....O#....#....O...#..#.#....OO...##OO..#.....##..O..O.O...O..O
|
||||
OO##..#...OO.......O...#..#..O.....O..OO.OO.#..#.#O.#O..#O.##..............O...O.#O..#..#.O......##.
|
||||
..O.#.....O#O......O#O#..O.O.....#...OO.#.O.#....#.###....#.#...........O#O.....OO.#..O...#..OO...#O
|
||||
#..O..O..O#..O...#O.#...###..O..#.O#.#OO.......OO..........O..OOO...#....OO......O..OO#.OO#...O.O.O.
|
||||
O.O..O..##..O...O.#O#.O.#.O..#O.OO#.OO..O..#...O.........#OO.......O...OO..####O...O..O...#OOO..O.O.
|
||||
O..#.O.#.OOO...#O.....O#O.#O#.OO...#OO.#.##.........O..O#O#.#.O#...O..O....O..#O...O#O...O..O.O.....
|
||||
O.O..O...#.O#.#...O..#.O.#.O##.O..#..#...OO#...##.O.#.##.OOO.#.........O.O....#..O.O.....#......OOO.
|
||||
O..#O.#....OO#..O.##........O...#.#.....OO.....#O...OO........OO.#OO.....#.......O.#..OO#..O.#O#....
|
||||
.OO..O.#..#...O.O.OOO#.O...O.O..OO.#O#..OO..#.....#.#..O....O.#O.##...O..O.....#...##...O.O#O...O..O
|
||||
#....O.#......OO....#..O#.OOO..O.#...O.........###O.....##..O..O.O.O.O....##.....O...O.O..O.O.....O.
|
||||
#...OO...O....##O........O.O..OO..#.....#.....OO...O...O.....#..O...#.....#.#...#...................
|
||||
...O....O..OO.OO.......##...#OOO.....O..OO.O#.#........O..O.O....O.#.O#...#.#.........#......O....#.
|
||||
O.........#..#..##..OO#....#..OO#O....O.O...O...................O.....O..OO.O.O.O..O.#...#...O.#.#O.
|
||||
....#.O#.O..#..#..#...#OO.#.......O.#....O...O...#.##...O...O....O#.O.....O#....#.#......#.#..O.O.O.
|
||||
#O##.#.....#.##O..#...O...###.OO......#......#O....#..#..O........#.O..O.....O#..O...OO#..OO.#.OO.OO
|
||||
.O#.###O.O.#...####O....#.##O.O##.#..#.#..O........###.#....##O....O.O....OO.O...O.#O...OOO##...#.O.
|
||||
....O..O....O............O.O......OO.##..#OO..#O...#.O.O..#..#O.O.........##.#..#..OO.....O.......#.
|
||||
O....##.#O...O.OO..O#..O...#...O.OO.#..O.#......#.O..#.#..........O###...OOO.O..#.......O.O.O......O
|
||||
.#......##...O.....#.O.....O.#.......O#O...O#.O.......O..#O..O#...O..O..OO#..#.O#...O.#.#.O...#.#.OO
|
||||
...O.#.O.#......##..O..........OOO.....O.O......O.....O..#.O..#...#.OOO...O..#..#...#......O...#...O
|
||||
..O..OO...#..#O....OO...#O...O#..O##....O#....#..#.#...#...........###...........#...OO...OO........
|
||||
OO....O...#OO..O..O.O.O..#.O.....O.#...O........OO...#......O.#....O..O.#.##.........OO.O#...O.OO...
|
||||
.#.....O.O#O..O.....#.#...O.O##O.......#..O#.#.#.OO#.O.O.#O#..OO..O.#O..O.OOOO......O....O...#..#...
|
||||
#......O..#...O..#.O....#..OO...#.........O.O...#..O......O.O.O.#.O.......O..##..O#.#..O..#....OO.#.
|
||||
.O..##O#O.O.O....#...#..O#.#.#.......O........#..#OO.OO..O..O.#...O..OOOO.....O#....O####.......#...
|
||||
.#OO#.O.#..........OO..O.......O#....#.OO#...##......####...O...OOO...#....O.#..O.......#..O.O......
|
||||
....O..#........#OO.......O.#..O...O..O..#.O....#.O.O.O..OO.O#O.O..O.###..O.#.#.......#.#...O#...O..
|
||||
OO....O#O.O.#.#.##O#.#O#....#....O.O.......O.O.OO....O#.....O.O.OO#.##.O.#..##O..O..O#O......O...O#O
|
||||
.#...#O..##.##.OO....##.....#O...#.O.O..#.....##......OO#OO.#...O...#..O....O#.#.O..O.#.......O.#.#O
|
||||
O.#OO#OOO..O.#..OO..O......#O...O....##..#..#O...OO#.#.OO........O.#...O..O#OOO.O....##.O.O........#
|
||||
.###..O.O...O#O..OO.O....#...OO.OO.O..OO..O.O.O.........#.O#...#...#..O..#..O..OO..#.O.....OO#......
|
||||
.O#...O#..#.....O......O##..O.O.O..#..#.#.....#...#....#..#...O.O#..O...O..#...O......#.#...O.....O.
|
||||
.O#..OO#.O.O...#O...O.....#....##..####.....O..O.....O...#O..#.......#OOO#.#....O.......O.#O.#..O#..
|
||||
......O.O#....O.......O.O...O..O#..O...#....#O..##OO.#O......OOO.....#.#O.O#.O#.O....O#O#O..###.#...
|
||||
#.O....#O......OOO......##.O.OO....#O...#OO...OO.##...O.O..#OO..OOO#..#.O.........O#...O........#...
|
||||
.O....#.......O#.O..##...O##OO......#..O.O#O.O.#...........#OO........O...O....#.............#.#..O.
|
||||
....#O.#..#.#..........OO...O..........O....O#...#OO.......O...O.#OO..OOO....O.O#..O.O.###..O.O#...O
|
||||
O...#..OO....O.......#.OO...O........O.OO..#..#..#.#.O..O.#....O.O......OO..OO.O..#..OOO#..OOO......
|
||||
.OO#.O.....O..#...O.....O....O#........#....#.....O..#..###...#.O.......OO......O..O.OO..O..#.O#O#..
|
||||
O....O...##.#....#O..O.#......................O..O#OOO..##....#.#..O.O.....O#..O.O.O...#.#.OOO...O..
|
||||
.......O..OO.O..O#.OO.#.O..#O....#.OOO.........##......#.O#.O..O....O....O.....#O.O...O.#.......O.#O
|
||||
....O##.#...O.##...O#...OOOO...OO...#.O.#...O.#O.......#.O.....##....O.#O....#......##.O....O.OO#..O
|
||||
OO...O#O#O#.#OO.#O.O..#.#.#.#.............#.O........#...O..O......O#.#OO.O...#.O..O...O#.O....O#..O
|
||||
.#..O..#.OO.#O...O#.O.#.#..#.......#.......#O...#..#O#....O...#....OO.....O......O..#.....O..O..#.O#
|
||||
...OO....O.#....#.O.#..#.#O.#.#O.....O..O##.......O..#O.#.O...OOO#O.#......O....#......#......O##...
|
||||
...##.O.O.....##....O.....#O..O........#.#.O#O....O#..O...O#OO...O....O..O.O.#.#..#OO...O..#....OO..
|
||||
O...#OO.O.OO#..O....##O...#....#...#.O.O..O.........#..##.#O.#.OO..OO...#...O.O#.OO..#.O.OO#.#..##OO
|
||||
..O.O#..O..#O...O.#.O.#....#....#.#O...O..O#O....#...#..#..##......#.O..........OOO........O.#......
|
||||
.....#....#....OO....#....O.#O..O...O#O..#...###....O.....O........##.#.#..#.O.OO.#O.O.O..#...O#O..O
|
||||
.OO.....O.O.....#....O.O....O......O#O....O#.#..O....O.#............#..O.#.....OO....O...O....O.#.O.
|
||||
.........O#OO.#O.....O......O...#..#O..O.#...O.O..OO.........#.O#OO.#.OO.........#.OO..O.O#O..O.O#..
|
||||
#...O...O....#O.###.....O.OO..O..OO.O#O....#O..#O..OO..O..#........O...#.....#..#...OO..O....#.....O
|
||||
......O.O.OO#.O.......O#O.OO.#..O....O...#.O#..#....O.#....#..#O...#.OO.O#........#......O....O.O...
|
||||
..#...##...#.O.O..#...O#.....##.......OO..O.#....O.O#O#..O...O#..OO...##O...O..O.....#.#...O.O......
|
||||
OOO.O.O#O......#..OO.O...OO...O............O..O#..##O...###.#......O#..#.O..O.OOO...#..O#......#OO.#
|
||||
O###.......#.O.O.#.....#.OO..O.O...#..O#O..#O.O.#.O..O.O..O#.#....#..#...O#..###.#..O#.O.........OO.
|
||||
.......#O#OO#...#.#...#.O...O.....O.O#.....O.O.O##.#...#O.#....OO...O.OO..O....O.O..#..#.....O...#..
|
||||
.O..###..OO#O.#.#OO.O#...#..O#...O.....O#.O......O...OO..O..O.....O..##.....OO.....O......O........O
|
||||
..O..#.O.#..OO.O#..O#..O.....OO#O#....OO.OO#O...O...O.O......OO.#O#....O..#O.#.OO##.#....#O#.#......
|
||||
O.#O.O.O.O...OO.....O.#...##..#....O....O..#..#O#..O#.#.OO.#O..........#...O..##..O.##.O.O...#.#O..#
|
||||
......O#...O.#..O#.O.........#.#....O.O....O.#..O..O##.#..O....#..#O#.OO.........#.O##O.....OO.OO.O.
|
||||
#....#.#O.O.O............O.O.#.O..O.........O..O........O......O.....OO.OO..OO.#....OO.OO.#....#..##
|
||||
.......#...O.O.#.O.....#.O#.#..O..O...O.O.#O..#...##.........O..#.OO..O........#.....#.......OO.....
|
||||
...#....O...O...#O.OO...#....#..O.#.O.#......##.#.#.OO.O.O...#..#..O........O.##..O...O#O...OO.O....
|
||||
.......OO...O..O...........O###......#....O.......O..O.....O#...#.O.#.#......O..O.....#.#OO.......O.
|
||||
.#..#.....#.O..O..O.....##..O.........O#.##O....OO...O...#..O.O.##OO......O.#..O....O..O.#.O.O...O.O
|
||||
.O....O...O....#.O......#..##O.#..O..O.....O...OO..###....#..#..#..........#.#.#.#.#........O...O.O.
|
||||
.OOO.#.#O....O.#...OO#.##...#...O.#...OO..###..OO.#.O....O..OO#..O..O....O#.#.O####..O....O..O#O....
|
||||
.OO.OO#......#....#..##O#O...OO....#....O......OO..OOO.....##.......O#.#.O.#O......O..#.#O..O.O..#..
|
||||
128
2023/day14/main.go
Normal file
128
2023/day14/main.go
Normal file
@ -0,0 +1,128 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
|
||||
h "git.bullercodeworks.com/brian/adventofcode/helpers"
|
||||
)
|
||||
|
||||
func main() {
|
||||
inp := h.StdinToStringSlice()
|
||||
part1(inp)
|
||||
fmt.Println()
|
||||
part2(inp)
|
||||
}
|
||||
|
||||
func part1(input []string) {
|
||||
m := h.StringSliceToCoordByteMap(input)
|
||||
fmt.Println("# Part 1")
|
||||
tiltNorth(&m)
|
||||
fmt.Println(calcLoad(&m))
|
||||
}
|
||||
|
||||
func part2(input []string) {
|
||||
target := 1_000_000_000
|
||||
mapCache := make(map[string]int)
|
||||
m := h.StringSliceToCoordByteMap(input)
|
||||
var i = 0
|
||||
var ignoreCache bool
|
||||
for ; i <= target; i++ {
|
||||
tiltNorth(&m)
|
||||
tiltWest(&m)
|
||||
tiltSouth(&m)
|
||||
tiltEast(&m)
|
||||
if !ignoreCache {
|
||||
if v, ok := mapCache[m.String()]; ok && i > 200 {
|
||||
target = i + (target-v)%(i-v) - 1
|
||||
ignoreCache = true
|
||||
}
|
||||
mapCache[m.String()] = i
|
||||
}
|
||||
}
|
||||
fmt.Println("# Part 2")
|
||||
fmt.Println(calcLoad(&m))
|
||||
}
|
||||
|
||||
func c(x, y int) h.Coordinate { return h.Coordinate{X: x, Y: y} }
|
||||
|
||||
// m.FindAll returns a slice sorted Left->Right, Top->Bottom
|
||||
func tiltNorth(m *h.CoordByteMap) {
|
||||
rocks := m.FindAll('O')
|
||||
for i := range rocks {
|
||||
if rocks[i].Y == m.TLY {
|
||||
continue
|
||||
}
|
||||
mv := h.Coordinate{X: rocks[i].X, Y: rocks[i].Y}
|
||||
for m.Get(mv.North()) == '.' {
|
||||
mv.MoveNorth()
|
||||
}
|
||||
if !mv.Equals(rocks[i]) {
|
||||
m.Put(rocks[i], '.')
|
||||
m.Put(mv, 'O')
|
||||
}
|
||||
}
|
||||
}
|
||||
func tiltEast(m *h.CoordByteMap) {
|
||||
rocks := m.FindAll('O')
|
||||
for i, j := 0, len(rocks)-1; i < j; i, j = i+1, j-1 {
|
||||
rocks[i], rocks[j] = rocks[j], rocks[i]
|
||||
}
|
||||
for i := range rocks {
|
||||
if rocks[i].X == m.BRX {
|
||||
continue
|
||||
}
|
||||
mv := h.Coordinate{X: rocks[i].X, Y: rocks[i].Y}
|
||||
for m.Get(mv.East()) == '.' {
|
||||
mv.MoveEast()
|
||||
}
|
||||
if !mv.Equals(rocks[i]) {
|
||||
m.Put(rocks[i], '.')
|
||||
m.Put(mv, 'O')
|
||||
}
|
||||
}
|
||||
}
|
||||
func tiltSouth(m *h.CoordByteMap) {
|
||||
rocks := m.FindAll('O')
|
||||
for i, j := 0, len(rocks)-1; i < j; i, j = i+1, j-1 {
|
||||
rocks[i], rocks[j] = rocks[j], rocks[i]
|
||||
}
|
||||
for i := range rocks {
|
||||
if rocks[i].Y == m.BRY {
|
||||
continue
|
||||
}
|
||||
mv := h.Coordinate{X: rocks[i].X, Y: rocks[i].Y}
|
||||
for m.Get(mv.South()) == '.' {
|
||||
mv.MoveSouth()
|
||||
}
|
||||
if !mv.Equals(rocks[i]) {
|
||||
m.Put(rocks[i], '.')
|
||||
m.Put(mv, 'O')
|
||||
}
|
||||
}
|
||||
}
|
||||
func tiltWest(m *h.CoordByteMap) {
|
||||
rocks := m.FindAll('O')
|
||||
for i := range rocks {
|
||||
if rocks[i].X == m.TLX {
|
||||
continue
|
||||
}
|
||||
mv := h.Coordinate{X: rocks[i].X, Y: rocks[i].Y}
|
||||
for m.Get(mv.West()) == '.' {
|
||||
mv.MoveWest()
|
||||
}
|
||||
if !mv.Equals(rocks[i]) {
|
||||
m.Put(rocks[i], '.')
|
||||
m.Put(mv, 'O')
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func calcLoad(m *h.CoordByteMap) int {
|
||||
var res int
|
||||
bot := m.BRY
|
||||
rocks := m.FindAll('O')
|
||||
for i := range rocks {
|
||||
res += (bot - rocks[i].Y) + 1
|
||||
}
|
||||
return res
|
||||
}
|
||||
203
2023/day14/problem
Normal file
203
2023/day14/problem
Normal file
@ -0,0 +1,203 @@
|
||||
[1]Advent of Code
|
||||
|
||||
• [2][About]
|
||||
• [3][Events]
|
||||
• [4][Shop]
|
||||
• [5][Settings]
|
||||
• [6][Log Out]
|
||||
|
||||
br0xen [7](AoC++) 28*
|
||||
|
||||
$year=[8]2023;
|
||||
|
||||
• [9][Calendar]
|
||||
• [10][AoC++]
|
||||
• [11][Sponsors]
|
||||
• [12][Leaderboard]
|
||||
• [13][Stats]
|
||||
|
||||
Our [14]sponsors help make Advent of Code possible:
|
||||
[15]Jane Street - Will our next great idea come from you? We hire smart,
|
||||
humble people who love to solve problems, build systems, and test
|
||||
theories. Our success is driven by our people and we never stop improving.
|
||||
|
||||
--- Day 14: Parabolic Reflector Dish ---
|
||||
|
||||
You reach the place where all of the mirrors were pointing: a massive
|
||||
[16]parabolic reflector dish attached to the side of another large
|
||||
mountain.
|
||||
|
||||
The dish is made up of many small mirrors, but while the mirrors
|
||||
themselves are roughly in the shape of a parabolic reflector dish, each
|
||||
individual mirror seems to be pointing in slightly the wrong direction. If
|
||||
the dish is meant to focus light, all it's doing right now is sending it
|
||||
in a vague direction.
|
||||
|
||||
This system must be what provides the energy for the lava! If you focus
|
||||
the reflector dish, maybe you can go where it's pointing and use the light
|
||||
to fix the lava production.
|
||||
|
||||
Upon closer inspection, the individual mirrors each appear to be connected
|
||||
via an elaborate system of ropes and pulleys to a large metal platform
|
||||
below the dish. The platform is covered in large rocks of various shapes.
|
||||
Depending on their position, the weight of the rocks deforms the platform,
|
||||
and the shape of the platform controls which ropes move and ultimately the
|
||||
focus of the dish.
|
||||
|
||||
In short: if you move the rocks, you can focus the dish. The platform even
|
||||
has a control panel on the side that lets you tilt it in one of four
|
||||
directions! The rounded rocks (O) will roll when the platform is tilted,
|
||||
while the cube-shaped rocks (#) will stay in place. You note the positions
|
||||
of all of the empty spaces (.) and rocks (your puzzle input). For example:
|
||||
|
||||
O....#....
|
||||
O.OO#....#
|
||||
.....##...
|
||||
OO.#O....O
|
||||
.O.....O#.
|
||||
O.#..O.#.#
|
||||
..O..#O..O
|
||||
.......O..
|
||||
#....###..
|
||||
#OO..#....
|
||||
|
||||
Start by tilting the lever so all of the rocks will slide north as far as
|
||||
they will go:
|
||||
|
||||
OOOO.#.O..
|
||||
OO..#....#
|
||||
OO..O##..O
|
||||
O..#.OO...
|
||||
........#.
|
||||
..#....#.#
|
||||
..O..#.O.O
|
||||
..O.......
|
||||
#....###..
|
||||
#....#....
|
||||
|
||||
You notice that the support beams along the north side of the platform are
|
||||
damaged; to ensure the platform doesn't collapse, you should calculate the
|
||||
total load on the north support beams.
|
||||
|
||||
The amount of load caused by a single rounded rock (O) is equal to the
|
||||
number of rows from the rock to the south edge of the platform, including
|
||||
the row the rock is on. (Cube-shaped rocks (#) don't contribute to load.)
|
||||
So, the amount of load caused by each rock in each row is as follows:
|
||||
|
||||
OOOO.#.O.. 10
|
||||
OO..#....# 9
|
||||
OO..O##..O 8
|
||||
O..#.OO... 7
|
||||
........#. 6
|
||||
..#....#.# 5
|
||||
..O..#.O.O 4
|
||||
..O....... 3
|
||||
#....###.. 2
|
||||
#....#.... 1
|
||||
|
||||
The total load is the sum of the load caused by all of the rounded rocks.
|
||||
In this example, the total load is 136.
|
||||
|
||||
Tilt the platform so that the rounded rocks all roll north. Afterward,
|
||||
what is the total load on the north support beams?
|
||||
|
||||
Your puzzle answer was 108813.
|
||||
|
||||
--- Part Two ---
|
||||
|
||||
The parabolic reflector dish deforms, but not in a way that focuses the
|
||||
beam. To do that, you'll need to move the rocks to the edges of the
|
||||
platform. Fortunately, a button on the side of the control panel labeled
|
||||
"spin cycle" attempts to do just that!
|
||||
|
||||
Each cycle tilts the platform four times so that the rounded rocks roll
|
||||
north, then west, then south, then east. After each tilt, the rounded
|
||||
rocks roll as far as they can before the platform tilts in the next
|
||||
direction. After one cycle, the platform will have finished rolling the
|
||||
rounded rocks in those four directions in that order.
|
||||
|
||||
Here's what happens in the example above after each of the first few
|
||||
cycles:
|
||||
|
||||
After 1 cycle:
|
||||
.....#....
|
||||
....#...O#
|
||||
...OO##...
|
||||
.OO#......
|
||||
.....OOO#.
|
||||
.O#...O#.#
|
||||
....O#....
|
||||
......OOOO
|
||||
#...O###..
|
||||
#..OO#....
|
||||
|
||||
After 2 cycles:
|
||||
.....#....
|
||||
....#...O#
|
||||
.....##...
|
||||
..O#......
|
||||
.....OOO#.
|
||||
.O#...O#.#
|
||||
....O#...O
|
||||
.......OOO
|
||||
#..OO###..
|
||||
#.OOO#...O
|
||||
|
||||
After 3 cycles:
|
||||
.....#....
|
||||
....#...O#
|
||||
.....##...
|
||||
..O#......
|
||||
.....OOO#.
|
||||
.O#...O#.#
|
||||
....O#...O
|
||||
.......OOO
|
||||
#...O###.O
|
||||
#.OOO#...O
|
||||
|
||||
This process should work if you leave it running long enough, but you're
|
||||
still worried about the north support beams. To make sure they'll survive
|
||||
for a while, you need to calculate the total load on the north support
|
||||
beams after 1000000000 cycles.
|
||||
|
||||
In the above example, after 1000000000 cycles, the total load on the north
|
||||
support beams is 64.
|
||||
|
||||
Run the spin cycle for 1000000000 cycles. Afterward, what is the total
|
||||
load on the north support beams?
|
||||
|
||||
Your puzzle answer was 104533.
|
||||
|
||||
Both parts of this puzzle are complete! They provide two gold stars: **
|
||||
|
||||
At this point, you should [17]return to your Advent calendar and try
|
||||
another puzzle.
|
||||
|
||||
If you still want to see it, you can [18]get your puzzle input.
|
||||
|
||||
You can also [Shareon [19]Twitter [20]Mastodon] this puzzle.
|
||||
|
||||
References
|
||||
|
||||
Visible links
|
||||
1. https://adventofcode.com/
|
||||
2. https://adventofcode.com/2023/about
|
||||
3. https://adventofcode.com/2023/events
|
||||
4. https://teespring.com/stores/advent-of-code
|
||||
5. https://adventofcode.com/2023/settings
|
||||
6. https://adventofcode.com/2023/auth/logout
|
||||
7. Advent of Code Supporter
|
||||
https://adventofcode.com/2023/support
|
||||
8. https://adventofcode.com/2023
|
||||
9. https://adventofcode.com/2023
|
||||
10. https://adventofcode.com/2023/support
|
||||
11. https://adventofcode.com/2023/sponsors
|
||||
12. https://adventofcode.com/2023/leaderboard
|
||||
13. https://adventofcode.com/2023/stats
|
||||
14. https://adventofcode.com/2023/sponsors
|
||||
15. https://www.janestreet.com/
|
||||
16. https://en.wikipedia.org/wiki/Parabolic_reflector
|
||||
17. https://adventofcode.com/2023
|
||||
18. https://adventofcode.com/2023/day/14/input
|
||||
19. https://twitter.com/intent/tweet?text=I%27ve+completed+%22Parabolic+Reflector+Dish%22+%2D+Day+14+%2D+Advent+of+Code+2023&url=https%3A%2F%2Fadventofcode%2Ecom%2F2023%2Fday%2F14&related=ericwastl&hashtags=AdventOfCode
|
||||
20. javascript:void(0);
|
||||
10
2023/day14/testinput
Normal file
10
2023/day14/testinput
Normal file
@ -0,0 +1,10 @@
|
||||
O....#....
|
||||
O.OO#....#
|
||||
.....##...
|
||||
OO.#O....O
|
||||
.O.....O#.
|
||||
O.#..O.#.#
|
||||
..O..#O..O
|
||||
.......O..
|
||||
#....###..
|
||||
#OO..#....
|
||||
@ -42,6 +42,44 @@ func StringSliceToCoordByteMap(input []string) CoordByteMap {
|
||||
return ret
|
||||
}
|
||||
|
||||
func (m *CoordByteMap) GetPos(x, y int) byte {
|
||||
return m.Get(Coordinate{X: x, Y: y})
|
||||
}
|
||||
|
||||
func (m *CoordByteMap) Get(pos Coordinate) byte {
|
||||
if v, ok := m.Field[pos]; ok {
|
||||
return v
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *CoordByteMap) Opt(pos Coordinate, def byte) byte {
|
||||
if v, ok := m.Field[pos]; ok {
|
||||
return v
|
||||
}
|
||||
return def
|
||||
}
|
||||
|
||||
func (m *CoordByteMap) Put(pos Coordinate, val byte) {
|
||||
if pos.X < m.TLX {
|
||||
m.TLX = pos.X
|
||||
}
|
||||
if pos.Y < m.TLY {
|
||||
m.TLY = pos.Y
|
||||
}
|
||||
if pos.X > m.BRX {
|
||||
m.BRX = pos.X
|
||||
}
|
||||
if pos.Y > m.BRY {
|
||||
m.BRY = pos.Y
|
||||
}
|
||||
m.Field[pos] = val
|
||||
}
|
||||
|
||||
func (m *CoordByteMap) Delete(pos Coordinate) {
|
||||
delete(m.Field, pos)
|
||||
}
|
||||
|
||||
func (m *CoordByteMap) Height() int {
|
||||
return m.BRY - m.TLY
|
||||
}
|
||||
@ -223,39 +261,6 @@ func (m *CoordByteMap) Count(b byte) int {
|
||||
return ret
|
||||
}
|
||||
|
||||
func (m *CoordByteMap) Get(pos Coordinate) byte {
|
||||
if v, ok := m.Field[pos]; ok {
|
||||
return v
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *CoordByteMap) Opt(pos Coordinate, def byte) byte {
|
||||
if v, ok := m.Field[pos]; ok {
|
||||
return v
|
||||
}
|
||||
return def
|
||||
}
|
||||
|
||||
func (m *CoordByteMap) Put(pos Coordinate, val byte) {
|
||||
if pos.X < m.TLX {
|
||||
m.TLX = pos.X
|
||||
}
|
||||
if pos.Y < m.TLY {
|
||||
m.TLY = pos.Y
|
||||
}
|
||||
if pos.X > m.BRX {
|
||||
m.BRX = pos.X
|
||||
}
|
||||
if pos.Y > m.BRY {
|
||||
m.BRY = pos.Y
|
||||
}
|
||||
m.Field[pos] = val
|
||||
}
|
||||
func (m *CoordByteMap) Delete(pos Coordinate) {
|
||||
delete(m.Field, pos)
|
||||
}
|
||||
|
||||
func (m *CoordByteMap) GrowNorth(size int, val byte) {
|
||||
tlY := m.TLY - 1
|
||||
for x := m.TLX; x <= m.BRX; x++ {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user