BOJ#11721

import Foundation

let input : String = readLine()!;

var idx : Int = 0

while idx + 10 < input.characters.count {

    var startIdx = input.index(input.startIndex, offsetBy: idx)

    var endIdx = input.index(input.startIndex, offsetBy: idx + 10)

    

    let range = startIdx ..< endIdx

    print(input.substring(with: range))

    

    idx += 10

}

var startIdx = input.index(input.startIndex, offsetBy: idx)

var endIdx = input.endIndex

let range = startIdx ..< endIdx

print(input.substring(with: range))