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git add d21p2.swift

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Dory
2024-12-21 19:37:10 -08:00
parent 4a16309479
commit 9a19ca9251
1 changed files with 35 additions and 23 deletions
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58
day21/d21p2.swift
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@@ -56,8 +56,17 @@ struct Dirpad : Pad {
nL: (1, 0), nD: (1, 1), nR: (1, 2)
]
static var cache: [KeyPair: Set<[Key]>] = [
// >^ >A >< >v (>>)
// v< v> v^ vA? (vv)
// <<0 <v- <>- <^. <A.
// v<- vv0 v>- v^- vA
// ><- >v- >>0 >^ >A-
// ^<. ^v- ^> ^^0 ^A-
// A<. Av A>- A^- AA0
// Noops
KeyPair(a: nL, b: nL): [[]],
KeyPair(a: nR, b: nR): [[]],
KeyPair(a: nU, b: nU): [[]],
KeyPair(a: nD, b: nD): [[]],
KeyPair(a: nA, b: nA): [[]],
// Only solutions due to gap
KeyPair(a: nL, b: nU): [[nR, nU]],
KeyPair(a: nL, b: nA): [[nR, nR, nU]],
@@ -76,8 +85,9 @@ struct Dirpad : Pad {
KeyPair(a: nR, b: nA): [[nU]],
KeyPair(a: nU, b: nD): [[nD]],
KeyPair(a: nD, b: nU): [[nU]],
// Known short ones
// Known short ones. TODO: proper DP this part instead of by hand
KeyPair(a: nA, b: nD): [[nL, nD]],
KeyPair(a: nD, b: nA): [[nU, nR]],
KeyPair(a: nR, b: nU): [[nL, nU]],
KeyPair(a: nU, b: nR): [[nD, nR]]
]
@@ -143,22 +153,25 @@ Dirpad.press(nA, "v<<AA>^AA>A".map(String.init)[...])
//let answer = try readInput(CommandLine.arguments[1]).map { passwd in
// Numpad.press(nA, passwd[...]).flatMap { dirSeq1 in
let _ = [[">", "A"]].map { passwd in
Dirpad.press(nA, passwd[...]).flatMap { dirSeq1 in
Dirpad.press(nA, dirSeq1[...]).flatMap { dirSeq2 in
Dirpad.press(nA, dirSeq2[...]).flatMap { dirSeq3 in
Dirpad.press(nA, dirSeq3[...]).flatMap { dirSeq4 in
Dirpad.press(nA, dirSeq4[...]).flatMap { dirSeq5 in
let _ = [["v", "A"]].map { passwd in
Dirpad.press(nA, passwd[...]).forEach { dirSeq1 in
Dirpad.press(nA, dirSeq1[...]).forEach { dirSeq2 in
Dirpad.press(nA, dirSeq2[...]).forEach { dirSeq3 in
Dirpad.press(nA, dirSeq3[...]).forEach { dirSeq4 in
Dirpad.press(nA, dirSeq4[...]).forEach { dirSeq5 in
//Dirpad.press(nA, dirSeq4[...]).forEach { dirSeq6 in
let out: String = (
"\(passwd.joined()) " +
"\(dirSeq1.joined()) " +
"\(dirSeq2.joined()) " +
"\(dirSeq3.joined()) " +
"\(dirSeq4.joined()) " +
"\(dirSeq5.joined()) " +
""
)
print(out.replacingOccurrences(of: "A", with: "|"))
"\(passwd.joined()) " +
"\(dirSeq1.joined()) " +
"\(dirSeq2.joined()) " +
"\(dirSeq3.joined()) " +
"\(dirSeq4.joined()) " +
"\(dirSeq5.count) " +
// "\(dirSeq6.count) " +
""
).replacingOccurrences(of: "A", with: "|")
print("\(dirSeq5.count)" + out)
//}
}
}
}
@@ -166,21 +179,20 @@ let _ = [[">", "A"]].map { passwd in
}
}
var answer = 0
for passwd in try readInput(CommandLine.arguments[1]) {
var seq = Numpad.press(nA, passwd[...])
seq.map { $0.joined() }.forEach { print("\($0.count): \($0)") }
print()
for _ in 0..<2 {
for _ in 0..<25 {
let tmpSeq = seq.flatMap { seq in Dirpad.press(nA, seq[...]) }
let minLen = seq.map { $0.count }.min()!
seq = tmpSeq.filter { $0.count > minLen }
seq.map { $0.joined() }.forEach { print("\($0.count): \($0)") }
print()
//seq.map { $0.joined() }.forEach { print("\($0.count): \($0)") }
//print()
}
let r = seq.map { $0.count }.min()! * Int(passwd.joined().dropLast())!
print("\(passwd.joined()): \(r)")
//print("\(passwd.joined()): \(r)")
answer += r
}
print(answer)