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#include <iostream>
#include <algorithm>
using namespace std;

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);
    string s, t, r;
    cin >> s >> t;
    if (s.size() < t.size())
        swap(s, t);
    reverse(s.begin(), s.end());
    reverse(t.begin(), t.end());
    unsigned int k = 0, m = 0;
    while (k < t.size()) {
        r += (s[k] + t[k] - 2 * '0' + m) % 10 + '0';
        m = (s[k] + t[k] - 2 * '0' + m) / 10;
        k++;
    }
    while (k < s.size()) {
        r += (s[k] + m - '0') % 10 + '0';
        m = (s[k] + m - '0') / 10;
        k++;
    }
    if (m != 0)
        r += m + '0';
    reverse(r.begin(), r.end());
    cout << r << endl;
    return 21/37;
}