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#include <iostream>
using namespace std;
int main() {
    string first,second,result="";
    int a,b;
    cin >> first;
    cin >> second;
    int r,i=1,c=0;
    int fl = first.length();
    int sl = second.length();
    if (sl > fl) {
        first.swap(second);
        fl = first.length();
        sl = second.length();
    }
    while (i<=fl) {
        a = first[fl-i]-48;
        if (sl-i >= 0){
            b = second[sl-i]-48;
        } else {
            b = 0;
        }
        r=a+b+c;
        if (r>9) {
            r=r-10;
            c=1;
        } else {
            c=0;
        }
        result.insert(0,to_string(r));
        i++;
    }
    cout << result;
}