Java

public static String twoArrays(int k, List<Integer> A, List<Integer> B) {
// Write your code here
    Collections.sort(A);
    Collections.sort(B,Collections.reverseOrder());
    for(int i=0;i<A.size();i++){
        if((A.get(i)+B.get(i)>=k)){
            continue;
        }else{
            return "NO";
        }  
    }
 return "YES";   
}