#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define ALL(a) (a).begin(), (a).end()
#define Yes cout << "Yes" << endl
#define No cout << "No" << endl

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    string S, T;
    cin >> S >> T;
    if (ssize(S) < ssize(T))
        swap(S, T);
    T.insert(0, S.length() - T.length(), '0');
    // cout << S << " " << T << endl;
    string ans;
    bool kuriagari = false;
    for (int i = ssize(S) - 1; i >= 0; i--) {
        if ((S[i] - '0') + (T[i] - '0') + kuriagari < 10) {
            ans += ((S[i] - '0') + (T[i] - '0') + kuriagari) + '0';
            kuriagari = false;
        } else {
            ans += (((S[i] - '0') + (T[i] - '0')) + kuriagari - 10) + '0';
            kuriagari = true;
        }
    }
    reverse(ALL(ans));
    if (kuriagari)
        ans = '1' + ans;
    cout << ans << endl;
}