//: C02:Incr.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// Read a number, add one and write it
#include <iostream>
using namespace std;

int main() {
  int num;
  cin >> num;
  cout << num + 1;
} ///:~