public Map<String,Integer> getdata(){
		try{
			// br.readLine();
			/*while((strline=br.readLine())!=null){
				String[] s = strline.split("[-： ]+");
				System.out.println(s[0] + ":"  + s[1]);
			}*/
			while((strline=br.readLine())!=null){
				String[] s = strline.split("[-： ]+");
				// s[0]:年, s[1]：月, s[6]：题号;
				String time = s[0] + s[1];
				//System.out.println(time);
				if(map.containsKey(time))
					map.put(time, map.get(time)+1);
				else
					map.put(time, 1);
					
			}
			/*
			for(Map.Entry<String, Integer> entry:map.entrySet()){  
		           System.out.println(entry.getKey() + " " + entry.getValue());
		       }
		       */ 
		}
		catch(Exception e){
			e.printStackTrace();
		}
                return map;
	}