#include <bits/extc++.h>

int main() {
    using namespace std;
    string A, B;
    cin >> A >> B;
    string T;
    unsigned long carry{};
    const auto get_back_or{[](auto&& S){
        if(!empty(S)){
            const auto ret{S.back() - 48UL};
            S.pop_back();
            return ret;
        }
        return 0UL;
    }};
    while(!empty(A) || !empty(B)){
        unsigned long a{get_back_or(A)};
        unsigned long b{get_back_or(B)};
        unsigned long r{a + b + carry};
        T.push_back('0' + r % 10);
        carry = r / 10;
    }
    if(carry)T.push_back('0' + carry);
    reverse(begin(T), end(T));
    cout << T << endl;
    return 0;
}