#include <algorithm>
#include <bits/stdc++.h>
using namespace std;

#define ll long long

string A, B, C = "";
int main()
{
  cin >> A >> B;
  reverse(A.begin(), A.end());
  reverse(B.begin(), B.end());

  int rem = 0, idx = 0;
  while (1)
  {
    int s = rem;
    if (idx < A.size())
      s += (A[idx]-'0');
    if (idx < B.size())
      s += (B[idx]-'0');

    rem = 0;
    if (s >= 10) rem = 1;
    C += char('0'+(s%10));
    idx++;
    if (idx >= A.size() && idx >= B.size()) break;
  }
  if (rem == 1) C += '1';
  reverse(C.begin(), C.end());
  cout << C << endl;
}