#include <iostream>
#include <string>
#include <cassert>
using namespace std;
long double a,b;
int main(){
    cout.precision(20);
    int i;
    cin >> a >> b;
    for(i=1;i<=15;i++){
        a *= 10;
        b *= 10;
    }
    a += b;
    for(i=1;i<=15;i++){
        a /= 10;
    }
    cout << a << endl;
}