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Solved 2023 day 11 part 2 in Swift
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8 files changed

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8 files changed

+378
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‎.vscode/launch.json

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"name": "Release day10b (2023\\swift\\10)",
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"program": "${workspaceFolder:adventofcode}\\2023\\swift\\10\\.build\\release\\day10b.exe",
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"preLaunchTask": "swift: Build Release day10b (2023\\swift\\10)"
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},
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{
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"type": "swift-lldb",
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"request": "launch",
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"sourceLanguages": [
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"swift"
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],
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"args": [
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"--input",
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"input.txt"
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],
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"cwd": "${workspaceFolder:adventofcode}\\2023\\swift\\11",
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"name": "Debug day11 (2023\\swift\\11)",
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"program": "${workspaceFolder:adventofcode}\\2023\\swift\\11\\.build\\debug\\day11.exe",
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"preLaunchTask": "swift: Build Debug day11 (2023\\swift\\11)"
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},
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{
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"type": "swift-lldb",
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"request": "launch",
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"sourceLanguages": [
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"swift"
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],
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"args": [
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"--input",
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"input.txt"
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],
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"cwd": "${workspaceFolder:adventofcode}\\2023\\swift\\11",
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"name": "Release day11 (2023\\swift\\11)",
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"program": "${workspaceFolder:adventofcode}\\2023\\swift\\11\\.build\\release\\day11.exe",
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"preLaunchTask": "swift: Build Release day11 (2023\\swift\\11)"
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},
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{
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"type": "swift-lldb",
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"request": "launch",
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"sourceLanguages": [
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"swift"
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],
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"args": [
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"--input",
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"input.txt"
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],
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"cwd": "${workspaceFolder:adventofcode}\\2023\\swift\\11",
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"name": "Debug day11b (2023\\swift\\11)",
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"program": "${workspaceFolder:adventofcode}\\2023\\swift\\11\\.build\\debug\\day11b.exe",
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"preLaunchTask": "swift: Build Debug day11b (2023\\swift\\11)"
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},
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{
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"type": "swift-lldb",
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"request": "launch",
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"sourceLanguages": [
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"swift"
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],
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"args": [
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"--input",
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"input.txt"
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],
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"cwd": "${workspaceFolder:adventofcode}\\2023\\swift\\11",
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"name": "Release day11b (2023\\swift\\11)",
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"program": "${workspaceFolder:adventofcode}\\2023\\swift\\11\\.build\\release\\day11b.exe",
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"preLaunchTask": "swift: Build Release day11b (2023\\swift\\11)"
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}
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]
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}

‎2023/swift/11/.gitignore

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.DS_Store
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/.build
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/Packages
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xcuserdata/
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DerivedData/
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.swiftpm/configuration/registries.json
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.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
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.netrc

‎2023/swift/11/Package.resolved

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{
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"originHash" : "9832dfa135fc6b9d633fdcb9ea7f50385b4d9bbbbd98283ca3ddd59e00550cf4",
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"pins" : [
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{
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"identity" : "swift-argument-parser",
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"kind" : "remoteSourceControl",
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"location" : "https://github.com/apple/swift-argument-parser",
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"state" : {
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"revision" : "c8ed701b513cf5177118a175d85fbbbcd707ab41",
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"version" : "1.3.0"
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}
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}
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],
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"version" : 3
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}

‎2023/swift/11/Package.swift

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// swift-tools-version: 5.10
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// The swift-tools-version declares the minimum version of Swift required to build this package.
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import PackageDescription
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let package = Package(
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name: "day11",
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dependencies: [
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.package(url: "https://github.com/apple/swift-argument-parser", from: "1.0.0"),
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],
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targets: [
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// Targets are the basic building blocks of a package, defining a module or a test suite.
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// Targets can depend on other targets in this package and products from dependencies.
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.executableTarget(
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name: "day11",
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dependencies: [
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.product(name: "ArgumentParser", package: "swift-argument-parser")
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],
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path: "Sources/a"),
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.executableTarget(
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name: "day11b",
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dependencies: [
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.product(name: "ArgumentParser", package: "swift-argument-parser"),
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],
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path: "Sources/b")
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]
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)

‎2023/swift/11/Sources/a/main.swift

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import ArgumentParser
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import Foundation
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@main
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struct Day11: ParsableCommand {
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@Option(help: "Specify the input")
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public var input: String
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public func run() throws {
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guard let filecontent = try? String(contentsOfFile: input, encoding: .utf8)
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else {
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print("Failed to open file \(input)")
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return
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}
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let lines = filecontent.components(separatedBy: .newlines)
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var stars = [(Int, Int)]()
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for (y, line) in lines.enumerated() {
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for (x, element) in line.enumerated() {
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if element == "#" {
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stars.append((x, y))
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}
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}
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}
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var horizontal = Set<Int>()
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Set<Int>(0..<lines.count).symmetricDifference(Set<Int>(stars.map { $0.1 })).forEach { horizontal.insert($0) }
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var vertical = Set<Int>()
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Set<Int>(0..<lines[0].count)
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.symmetricDifference(Set<Int>(stars.map { $0.0 })).forEach { vertical.insert($0) }
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var result = 0
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for i in 0..<stars.count - 1 {
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for j in i+1..<stars.count {
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var result2 = 0
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let star1 = stars[i]
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let star2 = stars[j]
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for x in min(star1.0, star2.0)..<max(star1.0, star2.0) {
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result2 += 1
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if vertical.contains(x) {
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result2 += 1
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}
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}
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for y in min(star1.1, star2.1)..<max(star1.1, star2.1) {
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result2 += 1
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if horizontal.contains(y) {
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result2 += 1
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}
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}
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result += result2
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print("\(i) \(j) \(result2)")
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}
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}
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print(result)
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}
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}

‎2023/swift/11/Sources/b/main.swift

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import ArgumentParser
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import Foundation
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@main
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struct Day11: ParsableCommand {
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@Option(help: "Specify the input")
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public var input: String
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public func run() throws {
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guard let filecontent = try? String(contentsOfFile: input, encoding: .utf8)
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else {
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print("Failed to open file \(input)")
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return
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}
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let lines = filecontent.components(separatedBy: .newlines)
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var stars = [(Int, Int)]()
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for (y, line) in lines.enumerated() {
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for (x, element) in line.enumerated() {
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if element == "#" {
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stars.append((x, y))
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}
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}
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}
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var horizontal = Set<Int>()
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Set<Int>(0..<lines.count).symmetricDifference(Set<Int>(stars.map { $0.1 })).forEach { horizontal.insert($0) }
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var vertical = Set<Int>()
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Set<Int>(0..<lines[0].count)
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.symmetricDifference(Set<Int>(stars.map { $0.0 })).forEach { vertical.insert($0) }
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var result = 0
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for i in 0..<stars.count - 1 {
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for j in i+1..<stars.count {
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var result2 = 0
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let star1 = stars[i]
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let star2 = stars[j]
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for x in min(star1.0, star2.0)..<max(star1.0, star2.0) {
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result2 += 1
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if vertical.contains(x) {
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result2 += 999999
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}
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}
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for y in min(star1.1, star2.1)..<max(star1.1, star2.1) {
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result2 += 1
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if horizontal.contains(y) {
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result2 += 999999
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}
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}
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result += result2
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// print("\(i) \(j) \(result2)")
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}
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}
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print(result)
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}
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}

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