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

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

#include <iostream>
#include <vector>
#include <string.h>

using namespace std;

struct Number {
    vector <int> Num;
    void Initial (string InputNumber) {
        for (int i = InputNumber.length() - 1; i >= 0; i--) {
            Num.push_back(InputNumber[i] - '0');
        }
    }
    /*static void Sum (Number Num1, Number Num2) {
        Number Result;
        Result.Num.resize(max(Num1.Num.size(), Num2.Num.size()) + 1);
    }*/
};

int main()
{
    string InputNumber1, InputNumber2;
    int MinLength, MaxLength;
    cin >> InputNumber1;
    cin >> InputNumber2;
    Number Num1;
    Num1.Initial(InputNumber1);
    Number Num2;
    Num2.Initial(InputNumber2);
    Number Num3;
    Num3.Num.resize(max(Num1.Num.size(), Num2.Num.size()) + 1);
    if(Num1.Num.size() >= Num2.Num.size()) {
        MinLength = Num2.Num.size();
        MaxLength = Num1.Num.size();
        for(int i = 0; i < MinLength; i++) {
            Num3.Num.push_back(Num1.Num[i] + Num2.Num[i]);
        }
        for(int i = MinLength; i < MaxLength; i++) {
            Num3.Num.push_back(Num1.Num[i]);
        }
    }
    else {
        MinLength = Num1.Num.size();
        MaxLength = Num2.Num.size();
        for(int i = 0; i < MinLength; i++) {
            Num3.Num.push_back(Num1.Num[i] + Num2.Num[i]);
        }
        for(int i = MinLength; i < MaxLength; i++) {
            Num3.Num.push_back(Num2.Num[i]);
        }
    }
    for(int i = 0; i < MaxLength; i++) {
        if (Num3.Num[i] / 2 != 0) {
            Num3.Num[i + 1] = 1 % Num3.Num[i];
        }
    }
    int i = Num3.Num.size() - 1;
    while(Num3.Num[i] == 0) {
        Num3.Num.pop_back();
        i--;
    }
    for(int i = Num3.Num.size() - 1; i >= 0; i--) {
        cout << Num3.Num[i];
    }
    return 0;
}