package contest200722;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Comparator;
import java.util.InputMismatchException;

public class E4 {
	InputStream is;
	PrintWriter out;
	String INPUT = "";
	
	void solve()
	{
		int n = ni(), m = ni();
		int[] a = na(n);
		int[] b = na(m);
		int K = ni();
		boolean[][] house = new boolean[n][m];
		for(int i = 0;i < K;i++){
			int r = ni()-1, c = ni()-1;
			house[r][c] = true;
		}
		
		boolean[][] g = giveSimpleGraphOfBipartiteFast(a, b);
		if(g == null){
			out.println(":(");
			return;
		}
		
		for(int i = 0;i < n;i++){
			for(int j = 0;j < m;j++){
				if(house[i][j] && g[i][j]){
					int[] pre = new int[n+m];
					Arrays.fill(pre, -1);
					int[] q = new int[n+m];
					pre[i] = -2;
					int p = 0;
					q[p++] = i;
					for(int z = 0;z < p;z++){
						int cur = q[z];
						if(cur < n){
							for(int l = 0;l < m;l++){
								if(!house[cur][l] && !g[cur][l] && pre[l+n] == -1){
									pre[l+n] = cur;
									q[p++] = l+n;
								}
							}
						}else{
							for(int l = 0;l < n;l++){
								if(g[l][cur-n] && pre[l] == -1){
									pre[l] = cur;
									q[p++] = l;
								}
							}
						}
					}
//					tr(pre, i, j);
					if(pre[j+n] != -1){
						int r = j+n;
						while(true){
							int l = pre[r];
							g[l][r-n] = true;
							r = pre[l];
							if(r < 0)break;
							g[l][r-n] = false;
						}
						g[i][j] = false;
					}else{
						out.println(":(");
						return;
					}
				}
			}
		}
		
		out.println("Yay!");
		char[][] ret = new char[n][m];
		for(int i = 0;i < n;i++)Arrays.fill(ret[i], '.');
		for(int i = 0;i < n;i++){
			for(int j = 0;j < m;j++){
				if(house[i][j]){
					ret[i][j] = 'x';
				}else if(g[i][j]){
					ret[i][j] = 'o';
				}
			}
		}
		for(char[] line : ret){
			out.println(new String(line));
		}
	}
	
	public static boolean[][] giveSimpleGraphOfBipartite(int[] e, int[] f)
	{
		int n = e.length, m = f.length;
		int dsum = 0;
		for(int v : e)dsum += v;
		for(int v : f)dsum -= v;
		if(dsum != 0)return null;
		
		int[] er = new int[n];
		int[] fr = new int[m];
		for(int i = 0;i < n;i++)er[i] = e[i]<<16|i;
		for(int i = 0;i < m;i++)fr[i] = f[i]<<16|i;
		
		Arrays.sort(er);
		er = rev_(er);
		
		boolean[][] g = new boolean[n][m];
		for(int i = 0;i < n;i++){
			Arrays.sort(fr);
			fr = rev_(fr);
			for(int j = 0;j < m && er[i]>>>16 > 0;j++){
				fr[j] -= 1<<16;
				er[i] -= 1<<16;
				if(fr[j] < 0)return null;
				g[er[i]&65535][fr[j]&65535] = true;
			}
			if(er[i]>>>16 > 0)return null;
		}
		return g;
	}
	
	public static int[] rev_(int[] a){for(int i = 0, j = a.length-1;i < j;i++,j--){int c = a[i]; a[i] = a[j]; a[j] = c;}return a;}

	
	public static boolean[][] giveSimpleGraphOfBipartiteFast(int[] e, int[] f)
	{
		int n = e.length, m = f.length;
		int dsum = 0;
		for(int v : e)dsum += v;
		for(int v : f)dsum -= v;
		if(dsum != 0)return null;
		
		int[][] er = new int[n][];
		int[][] fr = new int[m][];
		for(int i = 0;i < n;i++)er[i] = new int[]{e[i], i};
		for(int i = 0;i < m;i++)fr[i] = new int[]{f[i], i};
		
		boolean[][] ret = new boolean[n][m];
		Arrays.sort(er, new Comparator<int[]>() {
			public int compare(int[] a, int[] b) {
				return -(a[0] - b[0]);
			}
		});
		Arrays.sort(fr, new Comparator<int[]>() {
			public int compare(int[] a, int[] b) {
				return -(a[0] - b[0]);
			}
		});
		int[][] temp = new int[m][];
		for(int i = 0;i < n;i++){
			int j;
			for(j = 0;j < m && er[i][0] > 0;j++){
				fr[j][0]--; er[i][0]--;
				if(fr[j][0] < 0)return null;
				ret[er[i][1]][fr[j][1]] = true;
			}
			if(er[i][0] > 0)return null;
			int q = 0, r = 0;
			for(int k = j;k < m;k++){
				while(q < j && fr[q][0] > fr[k][0])temp[r++] = fr[q++];
				temp[r++] = fr[k];
			}
			while(q < j)temp[r++] = fr[q++];
			for(int k = 0;k < m;k++)fr[k] = temp[k];
		}
		return ret;
	}
	
	void run() throws Exception
	{
//		int n = 2000, m = 2000;
//		Random gen = new Random();
//		StringBuilder sb = new StringBuilder();
//		sb.append(n + " ");
//		sb.append(m + " ");
//		for (int i = 0; i < n; i++) {
//			sb.append(1000 + " ");
//		}
//		for (int i = 0; i < m; i++) {
//			sb.append(1000 + " ");
//		}
//		sb.append(0 + " ");
//		INPUT = sb.toString();

		
		is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes());
		out = new PrintWriter(System.out);
		
		long s = System.currentTimeMillis();
		solve();
		out.flush();
		if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms");
//		Thread t = new Thread(null, null, "~", Runtime.getRuntime().maxMemory()){
//			@Override
//			public void run() {
//				long s = System.currentTimeMillis();
//				solve();
//				out.flush();
//				if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms");
//			}
//		};
//		t.start();
//		t.join();
	}
	
	public static void main(String[] args) throws Exception { new E4().run(); }
	
	private byte[] inbuf = new byte[1024];
	public int lenbuf = 0, ptrbuf = 0;
	
	private int readByte()
	{
		if(lenbuf == -1)throw new InputMismatchException();
		if(ptrbuf >= lenbuf){
			ptrbuf = 0;
			try { lenbuf = is.read(inbuf); } catch (IOException e) { throw new InputMismatchException(); }
			if(lenbuf <= 0)return -1;
		}
		return inbuf[ptrbuf++];
	}
	
	private boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); }
	private int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; }
	
	private double nd() { return Double.parseDouble(ns()); }
	private char nc() { return (char)skip(); }
	
	private String ns()
	{
		int b = skip();
		StringBuilder sb = new StringBuilder();
		while(!(isSpaceChar(b))){ // when nextLine, (isSpaceChar(b) && b != ' ')
			sb.appendCodePoint(b);
			b = readByte();
		}
		return sb.toString();
	}
	
	private char[] ns(int n)
	{
		char[] buf = new char[n];
		int b = skip(), p = 0;
		while(p < n && !(isSpaceChar(b))){
			buf[p++] = (char)b;
			b = readByte();
		}
		return n == p ? buf : Arrays.copyOf(buf, p);
	}
	
	private int[] na(int n)
	{
		int[] a = new int[n];
		for(int i = 0;i < n;i++)a[i] = ni();
		return a;
	}
	
	private long[] nal(int n)
	{
		long[] a = new long[n];
		for(int i = 0;i < n;i++)a[i] = nl();
		return a;
	}
	
	private char[][] nm(int n, int m) {
		char[][] map = new char[n][];
		for(int i = 0;i < n;i++)map[i] = ns(m);
		return map;
	}
	
	private int[][] nmi(int n, int m) {
		int[][] map = new int[n][];
		for(int i = 0;i < n;i++)map[i] = na(m);
		return map;
	}
	
	private int ni() { return (int)nl(); }
	
	private long nl()
	{
		long num = 0;
		int b;
		boolean minus = false;
		while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
		if(b == '-'){
			minus = true;
			b = readByte();
		}
		
		while(true){
			if(b >= '0' && b <= '9'){
				num = num * 10 + (b - '0');
			}else{
				return minus ? -num : num;
			}
			b = readByte();
		}
	}
	
	private static void tr(Object... o) { System.out.println(Arrays.deepToString(o)); }
}