#include<iostream>
#include<string>
#include<vector>
using namespace std;
string Add(string num1, string num2)
{
	//保证a永远是最长的那个字符串
	if (num1.size() < num2.size())
	{
		string temp = num1;
		num1 = num2;
		num2 = temp;
	}
	//拿到a和b的索引
	int ai = num1.size()-1;
	int bi = num2.size()-1;
	//用来存每位A和B的取值
	int valueA = 0;
	int valueB = 0;
	//表示进位标志
	int flag = 0;
	//定义一个存储结果的一维向量
	vector<int> result;

	while (ai >= 0)
	{
		if (bi<0)
		{
			valueB = 0;
		}
		else
		{
			valueB = num2[bi]-48;
			bi--;
		}
		valueA = num1[ai] - 48;
		ai--;
		int sum = flag + valueA + valueB;
		//更新下一次的进位标志
		flag = sum / 10;
		result.push_back(sum % 10);

	}
	//处理最后进位问题
	if (flag == 1)
	{
		result.push_back(1);
	}

	string output = "";
	vector<int>::iterator it;
	for (it=result.begin();it!=result.end();it++) 
	{
		output += to_string(*it);
	}
	//将得到的字符串逆序
	string _output(output.rbegin(), output.rend());
	return _output;
}
int main()
{
	string a, b;
	while(cin>>a>>b)
	{
		cout << Add(a, b) << endl;
	}
	return 0;
}