import java.util.*;
 
public class Main {
  public static void main (String[] args) {
    Scanner in = new Scanner(System.in);
    int f = in.nextInt();
    for (int i = 0; i < 3; i++) {
      int dum = in.nextInt();
    }
    int l = in.nextInt();
    int w = in.nextInt();
    String ans = w < l - f ? ":(" : "Yay!";
    System.out.println(ans);
  }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz