14648번 '쿼리 맛보기'

let queryCount = Int((readLine()?.split(separator: " ").last!.description)!)!
var sequence = (readLine()?.split(separator: " ").map({ (content) -> Int in
    Int(content)!
}))!
var inputs = [[Int]]()
for _ in 0..<queryCount{
    inputs.append((readLine()?.split(separator: " ").map { Int($0)! })!)
}
for input in inputs{
    let type = input[0]
    if(type == 1){
        let i = input[1] - 1
        let j = input[2] - 1
        var sum = 0
        for index in i...j{
            sum += sequence[index]
        }
        let temp = sequence[i]
        sequence[i] = sequence[j]
        sequence[j] = temp
        print(sum)
    } else {
        let i = input[1] - 1
        let j = input[2] - 1
        let k = input[3] - 1
        let l = input[4] - 1
        var sum1 = 0
        var sum2 = 0
        for index in i...j{
            sum1 += sequence[index]
        }
        for index in k...l{
            sum2 += sequence[index]
        }
        print(sum1 - sum2)
    }
}
 

처음에 문제를 잘못 이해해서 괜한 시간을 잡아먹었다...