#include <fstream>

using namespace std;
const int INF = 2000000000;
int main(){
    int a,b;
    ifstream f("adunare.in");
    f >> a >> b;
    int l = -INF;
    int r = INF;
    int sol;
    while(l<=r){
        int m = (l+r)/2;
        if(m==a+b){
            sol = m;
            break;
        }
        else
            if(m < a+b)
                l = m+1;
            else
                r = m-1;
    }
    ofstream g("adunare.out");
    g<<sol<<"\n";
    return 0;
}