#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
#include <queue>
#include <cstdio>
#include <ctime>
#include <assert.h>
#include <chrono>
#include <random>
#include <numeric>
#include <set>
using namespace std;
typedef long long int ll;
using ull = unsigned long long;

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    string a,b; cin >> a >> b;
    ll res;
    if(b[0]=='-'){
        res=stoll(a)+stoll(b);
        cout << res << endl;
    }
    else{
        cout << a << b << endl;
    }
}