import java.util.*;

 import java.io.*;

 public class Main {

     public static void main(String[] args) throws IOException{

         // 计算程序运行时间

         // Arrays

         long st = System.currentTimeMillis();

         if ("abc" == "abc") System.out.println("Yes1");

         String str1 = new String("abc");

         String str2 = new String("abc");

         if (str1 == str2) System.out.println("Yes2");

         if (str1.equals(str2)) System.out.println("Yes3");

         //

         int[] t = {5, 1, 3, 2, 9};

         Arrays.sort(t);

         System.out.println(Arrays.toString(t));

         int[] s = new int[10];

         Arrays.fill(s, 33);

         System.out.println(Arrays.toString(s));

         // returns ((-insertion point) - 1) if key not exists.

         System.out.println(Arrays.binarySearch(t, 4));

         int cnt = 0;

         for (int i = 1; i < 100000000; i++) {cnt++;}

         long ed = System.currentTimeMillis();

         System.out.println("time: " + (ed - st));

         // 字符串hash

         String str = new String("hello world");

         System.out.println("hash Code: " + str.hashCode());

         // BufferReader缓冲与换行读取功能

         BufferedReader cin = new BufferedReader(new InputStreamReader(System.in));

         int sum = 0;

         String ss = null;

         while ((ss = cin.readLine()) != null) {

             sum += Integer.parseInt(ss);

         }

         System.out.println("the sum is: " + sum);

         //

     }

 }