fun main() { val br = System.`in`.bufferedReader() br.readLine() val t0 = System.nanoTime() while (true) { if (br.ready()) { val c = br.read() if (c == '\n'.toInt()) break } val t1 = System.nanoTime() val t = t1 - t0 print("%d.%09d\r".format(t / 1000000000L, t % 1000000000)) } println() } []