import java.io.*;
import java.util.*;
import java.math.*;

public class Main {
    public static void main(String[] args){
        Scanner in=new Scanner(System.in);
        BigDecimal A,B;
        while(in.hasNext()){
            A=in.nextBigDecimal();
            B=in.nextBigDecimal();
            BigDecimal C=A.add(B);
            C=C.stripTrailingZeros();
            System.out.println(C.toPlainString());
        }
    }
}