content: import java.io.BufferedReader;
  import java.io.IOException;
  import java.io.InputStreamReader;
  import java.io.PrintWriter;
  import java.util.StringTokenizer;
  
  public class submission {
      public static void main(String[] args) {
          FastReader in = new FastReader();
          PrintWriter out = new PrintWriter(System.out);
          
          /***  Code goes Here  ***/
          
          // Example usage
          // int n = in.nextInt();
          // for (int i = 0; i < n; i++) {
          //     int a = in.nextInt();
          //     int b = in.nextInt();
          //     out.println(a + b);
          // }
  
          /***  Code Ends Here ***/
          
          out.close();
      }
  
      static class FastReader {
          BufferedReader br;
          StringTokenizer st;
  
          public FastReader() {
              br = new BufferedReader(new InputStreamReader(System.in));
          }
  
          String next() {
              while (st == null || !st.hasMoreElements()) {
                  try {
                      st = new StringTokenizer(br.readLine());
                  } catch (IOException e) {
                      e.printStackTrace();
                  }
              }
              return st.nextToken();
          }
  
          int nextInt() {
              return Integer.parseInt(next());
          }
  
          long nextLong() {
              return Long.parseLong(next());
          }
  
          double nextDouble() {
              return Double.parseDouble(next());
          }
  
          String nextLine() {
              String str = "";
              try {
                  str = br.readLine();
              } catch (IOException e) {
                  e.printStackTrace();
              }
              return str;
          }
      }
  }