#include <bits/stdc++.h>
using namespace std;
const int N = 1e6 + 10;
const int inf = 0x3f3f3f3f;
const int inf2 = 1e18 + 10;
const int mod = 1000000007;
int main() {
  int n;
  char str[100100];
  scanf("%d", &n);
  scanf("%*s", str);
  printf("%d\n", n + 1);
  return 0;
}
