import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args) throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	int[] tmp = new int[6];
    	int i = 0;
    	for (String str = br.readLine(); str != null; str = br.readLine()) {
    		tmp[i++] = Integer.parseInt(str);
    	}
    	final int A = tmp[0];
    	final int E = tmp[4];
    	final int K = tmp[5];
    	
    	boolean communicationAvailable = false;
    	
    	if (E - A <= K) {
    		communicationAvailable = true;
    	}
    	
    	if (communicationAvailable) {
    		System.out.println("Yay!");
    	} else {
    		System.out.println(":(");
    	}
    }
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io public class Main {
	public static void main(String[] args) throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	int[] tmp = new int[6];
    	int i = 0;
    	for (String str = br.readLine(); str != null; str = br.readLine()) {
    		tmp[i++] = Integer.parseInt(str);
    	}
    	final int A = tmp[0];
    	final int E = tmp[4];
    	final int K = tmp[5];
    	
    	boolean communicationAvailable = false;
    	
    	if (E - A <= K) {
    		communicationAvailable = true;
    	}
    	
    	if (communicationAvailable) {
    		System.out.println("Yay!");
    	} else {
    		System.out.println(":(");
    	}
    }
} Main public static void main(String[] args) throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	int[] tmp = new int[6];
    	int i = 0;
    	for (String str = br.readLine(); str != null; str = br.readLine()) {
    		tmp[i++] = Integer.parseInt(str);
    	}
    	final int A = tmp[0];
    	final int E = tmp[4];
    	final int K = tmp[5];
    	
    	boolean communicationAvailable = false;
    	
    	if (E - A <= K) {
    		communicationAvailable = true;
    	}
    	
    	if (communicationAvailable) {
    		System.out.println("Yay!");
    	} else {
    		System.out.println(":(");
    	}
    } main {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	int[] tmp = new int[6];
    	int i = 0;
    	for (String str = br.readLine(); str != null; str = br.readLine()) {
    		tmp[i++] = Integer.parseInt(str);
    	}
    	final int A = tmp[0];
    	final int E = tmp[4];
    	final int K = tmp[5];
    	
    	boolean communicationAvailable = false;
    	
    	if (E - A <= K) {
    		communicationAvailable = true;
    	}
    	
    	if (communicationAvailable) {
    		System.out.println("Yay!");
    	} else {
    		System.out.println(":(");
    	}
    } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) int[] tmp = new int[6]; tmp new int[6] 6 int i = 0; i 0 for (String str = br.readLine(); str != null; str = br.readLine()) {
    		tmp[i++] = Integer.parseInt(str);
    	} String str = br.readLine(); String str = br.readLine(); str br.readLine() br.readLine br str != null str null str = br.readLine() str = br.readLine() str br.readLine() br.readLine br {
    		tmp[i++] = Integer.parseInt(str);
    	} {
    		tmp[i++] = Integer.parseInt(str);
    	} tmp[i++] = Integer.parseInt(str) tmp[i++] tmp i++ i Integer.parseInt(str) Integer.parseInt Integer str final int A = tmp[0]; A tmp[0] tmp 0 final int E = tmp[4]; E tmp[4] tmp 4 final int K = tmp[5]; K tmp[5] tmp 5 boolean communicationAvailable = false; communicationAvailable false if (E - A <= K) {
    		communicationAvailable = true;
    	} E - A <= K E - A E A K {
    		communicationAvailable = true;
    	} communicationAvailable = true communicationAvailable true if (communicationAvailable) {
    		System.out.println("Yay!");
    	} else {
    		System.out.println(":(");
    	} communicationAvailable {
    		System.out.println("Yay!");
    	} System.out.println("Yay!") System.out.println System.out System System.out "Yay!" {
    		System.out.println(":(");
    	} System.out.println(":(") System.out.println System.out System System.out ":(" String[] args args public class Main {
	public static void main(String[] args) throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	int[] tmp = new int[6];
    	int i = 0;
    	for (String str = br.readLine(); str != null; str = br.readLine()) {
    		tmp[i++] = Integer.parseInt(str);
    	}
    	final int A = tmp[0];
    	final int E = tmp[4];
    	final int K = tmp[5];
    	
    	boolean communicationAvailable = false;
    	
    	if (E - A <= K) {
    		communicationAvailable = true;
    	}
    	
    	if (communicationAvailable) {
    		System.out.println("Yay!");
    	} else {
    		System.out.println(":(");
    	}
    }
} public class Main {
	public static void main(String[] args) throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	int[] tmp = new int[6];
    	int i = 0;
    	for (String str = br.readLine(); str != null; str = br.readLine()) {
    		tmp[i++] = Integer.parseInt(str);
    	}
    	final int A = tmp[0];
    	final int E = tmp[4];
    	final int K = tmp[5];
    	
    	boolean communicationAvailable = false;
    	
    	if (E - A <= K) {
    		communicationAvailable = true;
    	}
    	
    	if (communicationAvailable) {
    		System.out.println("Yay!");
    	} else {
    		System.out.println(":(");
    	}
    }
} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args) throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	int[] tmp = new int[6];
    	int i = 0;
    	for (String str = br.readLine(); str != null; str = br.readLine()) {
    		tmp[i++] = Integer.parseInt(str);
    	}
    	final int A = tmp[0];
    	final int E = tmp[4];
    	final int K = tmp[5];
    	
    	boolean communicationAvailable = false;
    	
    	if (E - A <= K) {
    		communicationAvailable = true;
    	}
    	
    	if (communicationAvailable) {
    		System.out.println("Yay!");
    	} else {
    		System.out.println(":(");
    	}
    }
}
