#include <bits/stdc++.h>
using namespace std;
long long int power(long long int x, long long int y, long long int p) {
  long long int res = 1;
  x = x % p;
  while (y > 0) {
    if (y & 1) res = (res * x) % p;
    y = y / 2;
    x = (x * x) % p;
  }
  return res;
}
void solve() {
  long long int n;
  cin >> n;
  string s;
  cin >> s;
  cout << n + 1 << "\n";
}
int main() {
  long long int t = 1;
  while (t--) {
    solve();
  }
  return 0;
}
