import java.awt.Point; import java.awt.Rectangle; import java.awt.geom.Rectangle2D; import java.io.BufferedInputStream; import java.io.IOException; import java.math.BigDecimal; import java.math.BigInteger; import java.util.*; import java.util.Map.Entry; import java.util.concurrent.ConcurrentSkipListSet; import javax.swing.ImageIcon; public class Main { static final long C = 1000000007; static final int CY = 1000000000; //long[] F; public void calc() { long fTime = System.currentTimeMillis(); StringBuilder sb = new StringBuilder(); BufferedInputStream bs = new BufferedInputStream(System.in); Scanner sc = new Scanner(bs); int h = sc.nextInt(); int w = sc.nextInt(); int f = sc.nextInt(); Point fp = new Point(sc.nextInt(), sc.nextInt()); g = sc.nextInt(); gp = new Point(sc.nextInt(), sc.nextInt()); map = new char[h][]; for (int i=0; i < h; i++) { map[i] = sc.next().toCharArray(); } memo = new boolean[h][w][1501]; boolean ans = false; memo[fp.x][fp.y][f] = true; msd(fp.x, fp.y); ans = memo[gp.x][gp.y][g]; System.out.println(ans?"Yes":"No"); } //static int N = 1500; boolean[][][] memo ; char[][] map; int g; Point gp; void msd(int x, int y) { if (memo[gp.x][gp.y][g]) { return; } int nx = x+1,ny = y; check(x, y, nx, ny); nx = x-1;ny = y; check(x, y, nx, ny); nx = x;ny = y+1; check(x, y, nx, ny); nx = x;ny = y-1; check(x, y, nx, ny); } private void check(int x, int y, int nx, int ny) { int add; if (isIn(nx, ny)) { char nc = map[nx][ny]; add = nc == '.'?-1:1; if (nc == map[x][y]) { boolean flag = false; if (nc == '.' ) { int max = 0; for (int i=1499;i >= 0; i--) { if (memo[x][y][i] ){ max = i; } } for (int i=max-1;i >= 0; i-=2) { if (!memo[nx][ny][i]) { memo[nx][ny][i]= true; flag = true; } } }else { int max = 1500; for (int i=0;i < 1500; i++) { if (memo[x][y][i] ){ max = i; } } for (int i=max+1;i < 1500; i+=2) { if (!memo[nx][ny][i]) { memo[nx][ny][i]= true; flag = true; } } } if (flag) { msd(nx, ny); } } for (int i=1; i < 1500; i++) { if (memo[x][y][i]) { if (!memo[nx][ny][i+add]) { memo[nx][ny][i+add] = true; msd(nx, ny); } } } } } boolean isIn(int x, int y) { return !(x < 0 || y < 0 || map.length <= x || map[0].length <= y); } public static void main(String[] args) { Main main = new Main(); main.calc(); } }