#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main(){
    string a, b; cin >> a >> b;
    if(a == "0" || a == "-0"){
        cout << b << endl;
        return 0;
    }
    if(b.front() == '+'){
        ll ans = stoll(a);
        b = b.substr(1);
        ans += stoll(b);
        cout << ans << endl;
        return 0;
    }
    if(b.front() == '-'){
        ll ans = stoll(a);
        b = b.substr(1);
        ans -= stoll(b);
        cout << ans << endl;
        return 0;
    }
    cout << a + b << endl;
    return 0;
}