fun main(array: Array<String>) {
    val o = readLine()!!
    val e = readLine()!!
    if(o.length == e.length) {
        repeat(o.length) {
            print(o[it])
            print(e[it])
        }
    }
    else {
        repeat(e.length) {
            print(o[it])
            print(e[it])
        }
        print(o[o.length-1])
    }
}