UVA - 10192 - Vacation

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

public class Main {

    public static void main(String[] args) throws IOException {
        InputStreamReader isr = new InputStreamReader(System.in);
        BufferedReader br = new BufferedReader(isr);
        StringBuffer sb = new StringBuffer("");
        String m="";
        int counter=1;
        while((m=br.readLine())!=null){
            if("#".equals(m))
                continue;
            String h=br.readLine();
            sb.append("Case #").append(counter).append(": you can visit at most ")
                    .append(LCS(m,h,new int[0][0])).append(" cities.\n");
            counter++;
        }
        System.out.print(sb);
    }
   
    static int LCS(String m,String n,int[][] arr){
        arr=new int[m.length()+1][n.length()+1];
        for(int i=0;i<m.length()+1;i++)
            arr[i][0]=0;
        for(int i=0;i<n.length()+1;i++)
            arr[0][i]=0;
        for(int i=0;i<m.length();i++){
             for(int j=0;j<n.length();j++){
                 if(m.charAt(i)==n.charAt(j))
                    arr[i+1][j+1]=arr[i][j]+1;
                 else
                    arr[i+1][j+1]=Math.max(arr[i+1][j],arr[i][j+1]);
             }
        }
        return arr[m.length()][n.length()];
    }
}