#include <bits/stdc++.h>
using namespace std;
int main(void) {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int t = 1;
  while (t--) {
    int n;
    cin >> n;
    string s;
    cin >> s;
    int c = 0;
    cout << n + 1 << "\n";
  }
  return 0;
}
