public class test{   
   public void splitIt(String splitStr, int bytes) {   
   int cutLength = 0;   
   int byteNum = bytes;   
   byte bt[] = splitStr.getBytes();   
   System.out.println("Length of this String ===>" + bt.length);   
   if (bytes > 1) {   
   for (int i = 0; i  < byteNum; i++) {   
   if (bt[i]  < 0) {   
   cutLength++;   
  
   }   
   }   
  
   if (cutLength % 2 == 0) {   
   cutLength /= 2;   
   }else   
   {   
   cutLength=0;   
   }   
   }   
   int result=cutLength+--byteNum;   
   if(result>bytes)   
   {   
   result=bytes;   
   }   
   if (bytes == 1) {   
   if (bt[0]  < 0) {   
   result+=2;   
  
   }else   
   {   
   result+=1;   
   }   
   }   
   String substrx = new String(bt, 0, result);   
   System.out.println(substrx);   
  
   }   
  
   public static void main(String args[]) {   
   String str = "我abc的DEFe呀fgsdfg大撒旦";   
   int num =3;   
   System.out.println("num:" + num);   
   test sptstr = new test();   
   sptstr.splitIt(str, num);   
   }   
  
   } 

    public static void main(String[] args) throws IOException {
        int cnt = 7;
        BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
        char[] c = stdIn.readLine().toCharArray();
        int already = 0;//计数器.汉字+2其它+1
        for (int i = 0; i < cnt; i++) {
            if (i >= c.length || already > cnt)
                break;
            char cc = c[i];
            if ((cc >>= 8) == 0)
                already += 2;
            else
                already += 1;
            System.out.print(c[i]);
        }
    }