package A1808

import java.lang.System.in import java.util.Scanner import kotlin.collections.max

fun main(args: Array) { val scanner: Scanner = Scanner(in) val t = scanner.nextInt() for (k in 0 until t) { val n = scanner.nextInt() val a = MutableList(n) { scanner.nextInt() } val b = MutableList(n) {i -> val x = scanner.nextInt() if (a[i] < x) { val ret = a[i] a[i] = x ret } else { x } } if (a.max() != a[n — 1] || b.max() != b[n — 1]) { println("NO") } else { println("YES") } } }

**** Verdict :

Can't compile file: program.kt:23:15: error: unresolved reference: max if (a.max() == a[n — 1] && b.max() == b[n — 1]) { ^ program.kt:23:38: error: unresolved reference: max if (a.max() == a[n — 1] && b.max() == b[n — 1]) { ^ Unable to find classes\programkt.class