#include <bits/stdc++.h>
int getTheAnswer() { return 42; }
class Task {
 public:
  void solve(std::istream& in, std::ostream& out) {
    int x;
    in >> x;
    out << x + getTheAnswer() << "\n";
  }
};
int main() {
  Task solver;
  std::istream& in(std::cin);
  std::ostream& out(std::cout);
  solver.solve(in, out);
  return 0;
}
