#include <bits/stdc++.h>
using namespace std;
long long n, m, a, b, c, d, p, q, r, k;
vector<long long> v, u;
long long zero = 0, one = 0, two = 0;
string s;
void input() {
  cin >> n;
  cin >> s;
}
void solve() { cout << n + 1; }
signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  long long T = 1;
  while (T--) {
    input();
    solve();
  }
}
