#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main()
{
	ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	string num1,num2;getline(cin,num1);getline(cin,num2);
	reverse(num1.begin(),num1.end());reverse(num2.begin(),num2.end());
	
	ll num=num1.size()-num2.size();
	for(int i=0;i<abs(num);i++)
	{
		if(num<0)num1+="0";
		else num2+="0";
	}
	string num3(num1.size()+1,'0');
	for(int i=0;i<num1.size();i++)
	{
		if(num1[i]>'0')num3[i]+=num1[i]-'0';
		if(num2[i]>'0')num3[i]+=num2[i]-'0';
		if(num3[i]-'0'>=10)
		{
			num3[i]-=10;
			num3[i+1]+=1;
		}
	}
	
	if(num3.back()=='0')num3.pop_back();
	reverse(num3.begin(),num3.end());
	cout<<num3;
	
	return 0;
}