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() { public int compare(int[] a, int[] b) { return -(a[0] - b[0]); } }); Arrays.sort(fr, new Comparator() { 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)); } }