#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i = 0; i < (n);i++)
#define sz(x) int(x.size())
typedef long long ll;
typedef pair<int,int> P;
constexpr int INF = 1e9;

int main() {
  string a, b;
  cin >> a >> b;
  bool m = false;
 
  if (a[0] == '-') m = true;
  int d = a.back() - '0';
  if (m) d *= -1;
  m = false;
  if (b[0] == '-') m = true;
  int c = b.back() - '0';
  if (m)  c *= -1;
  cout << d + c << endl;
  return 0;
}