package Yukicoder

/**
 * Created by hichikawa on 2015/11/02.
 */
fun main(args: Array<String>) {
    fun readLineLongArray() : List<Long> {
        val str = readLine() as String
        val arrStr = str.split(" ")
        val ret = arrStr.map { it.toLong() }
        return ret
    }
    val inputNums = readLineLongArray()
    val basePrice = inputNums[0]
    val shohiPercent = 100 + inputNums[1]
    println(basePrice * shohiPercent / 100)
}