//

//  1003 A+B.cpp

//  Jobdu

//

//  Created by PengFei_Zheng on 2017/4/14.

//  Copyright © 2017年 PengFei_Zheng. All rights reserved.

//

#include <iostream>

#include <stdio.h>

#include <algorithm>

#include <string.h>

#include <cmath>

using namespace std;

char a[],b[];

int num1,num2;

int main(){

    while(scanf("%s%s",a,b)!=EOF){

        int lena = (int)strlen(a);

        int lenb = (int)strlen(b);

        num1 = num2 = ;

        int size1 = ;

        int size2 = ;

        bool flag1 = (a[]>=''&&a[]<='') ? true : false;

        bool flag2 = (b[]>=''&&b[]<='')? true : false;

        for(int i = lena - ; i >=  ; i--){

            if(a[i]>='' && a[i]<=''){

                num1+=(a[i]-'')*pow(,size1);

                size1++;

            }

        }

        for(int i = lenb - ; i >=  ; i--){

            if(b[i]>='' && b[i]<=''){

                num2+=(b[i]-'')*pow(,size2);

                size2++;

            }

        }

        if(flag1&&flag2) printf("%d\n",num1+num2);

        else if(flag1 && !flag2) printf("%d\n",num1-num2);

        else if(flag2 && !flag1) printf("%d\n",num2-num1);

        else if(!flag1 && !flag2) printf("%d\n",-num1-num2);

    }

}

/**************************************************************

    Problem: 1003

    User: zpfbuaa

    Language: C++

    Result: Accepted

    Time:0 ms

    Memory:1608 kb

****************************************************************/