import java.util.*;   
import java.io.*;   
import java.math.*;   
  
public class Main{   
    public static void main(String[] args) {   
        Scanner in = new Scanner(System.in);
        while(in.hasNext())
        {
            BigDecimal a = in.nextBigDecimal();
            BigDecimal b = in.nextBigDecimal();
            System.out.println(a.add(b).stripTrailingZeros().toPlainString());
            //stripxxxx 去掉后置0
            //toplainstring是返回普通计数法
        }
    }   
}