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#include <iostream>
#include <string>
#include <algorithm>

using namespace std;

char addLetters(char a, char b) {
    return (char) ((a - '0' + b - '0')%10 + '0');
}

 char isOver(char a, char b, char over) {
    return (a - '0' + b - '0' + over - '0' >= 10) ? '1' : '0';
}

char getChar(string s, int index) {
    if(index < 0) {
        return '0';
    }
    return s[index];
}

int main() {

    string shorterNumber, longerNumber, temp;
    cin >> shorterNumber >> longerNumber;

    if(shorterNumber.size() > longerNumber.size()) {
        temp = shorterNumber;
        shorterNumber = longerNumber;
        longerNumber = temp;
    }

    int shorterIndex = (int) shorterNumber.size() - 1;
    int longerIndex = (int) longerNumber.size() - 1;

    string result;
    char over = '0';
    for(int i = 0; i < longerNumber.size(); i++) {
        result.push_back(addLetters(addLetters(getChar(shorterNumber, shorterIndex), getChar(longerNumber, longerIndex)), over));
        over = isOver(getChar(shorterNumber, shorterIndex), getChar(longerNumber, longerIndex), over);
        shorterIndex--;
        longerIndex--;
    }

    if(over != '0') {
        result.push_back(over);
    }

    reverse(result.begin(), result.end());
    cout << result << "\n";
    return 0;
}