#include <bits/stdc++.h>
using namespace std;
#define ALL(a) (a).begin(),(a).end()
#define rALL(a) (a).rbegin(),(a).rend()
typedef pair<int, int> Pint;
typedef pair<int64_t, int64_t> Pll;
typedef int64_t ll;

int main() {
    int64_t a, b;
    cin >> a >> b;
    if (b < 0){
       cout << a + b << endl; 
    }
    else if (a == 0){
        cout << b << endl;
    }
    else {
        cout << a << b << endl;
    }
    
}