import java.util.*;

class Calculator
{
  public static void main(String[] args)
  {
    Calculator c = new Calculator();
    int total = c.sum("3 4 5 27 3");
    System.out.println(total);
  }

  public static int sum(String s)
  {
    Scanner in = new Scanner(s);
    int sum = 0;
    while (in.hasNextInt())
    {
      System.out.println(in.nextInt());
      sum = sum + in.nextInt();
    }
    return sum;
  }
}