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

int main() {
    string a, b, c;
    c = "";
    cin >> a >> b;
    if (a.size() < b.size()) {
        swap(a,b);
    }
    if (a.size() > b.size()) {
        string p = "";
        for (int i = 0; i < a.size()-b.size(); i++) {
            p += '0';
        }
        b = p + b;
    }
    bool prz = 0;
    for (int i = a.size()-1; i >= 0; i--) {
        if (prz) {
            if ((a[i]-'0') + (b[i]-'0')+1 > 9) {
                c += char(a[i] + b[i] - '0' - 9);
                prz = 1;
            }
            else {
                c += char(a[i] + b[i] - '0' + 1);
                prz = 0;
            }
        }
        else {
            if ((a[i]-'0') + (b[i]-'0') > 9) {
                c += char(a[i] + b[i] - '0' - 10);
                prz = 1;
            }
            else {
                c += char(a[i] + b[i] - '0');
                prz = 0;
            }
        }
    }
    if (prz) {
        cout << 1;
    }
    for (int i = c.size()-1; i >= 0; i--) {
        cout << c[i];
    }
}