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

int main() {
    string a, b;
    cin >> a >> b;
    if(b[0] == '-') {
        cout << stoi(a) + stoi(b) << endl;
    }
    else {
        string sum = a + b;
        string ans;
        for(int i=0;i<sum.size();i++) {
            if(i == sum.size()-1) {
                ans += sum.back();
                break;
            }
            if(sum[i] == '-' || sum[i] == '0') continue;
            else {
                ans += sum.substr(i, sum.size()-i);
                break;
            }
        }
        cout << ans << endl;
    }
    return 0;
}