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#include <iostream>
using namespace std;

int main(){
    string a;
    string b;
    cin >> a;
    cin >> b;
    string c = "";
    int addits = 0;
    for(int i = a.length()-1; i > -1; i--){
        int e = addits;
        addits = 0;
        e += ((int)a[i]) - '0';
        e += ((int)b[i]) - '0';
        c = to_string((e%10)) + c;
        addits = (e-(e%10))/10;
    }
    if(addits > 0){
        c = to_string(addits) + c;
    }
    cout << c;
}