[Swift] 백준1181

import Foundation

let n = Int(readLine()!)!

var arr = [String]()

for _ in 0 ..< n {
    let input = readLine()!
    arr.append(input)
}

// 중복제거
arr = Array(Set(arr))

// 길이사전순 + 짧은 순
arr = arr.sorted(by: { $0 < $1 }).sorted(by: { $0.count < $1.count })
for string in arr {
    print(string)
}