#include <bits/stdc++.h>
# define endl            '\n'
# define clr(x,a)        memset(x,a,sizeof(x))
# define PI              3.14159265358979323846
# define vi              vector<int>
# define fo(i,n)         for(int i=1;i<=n;i++)
# define all(a)          a.begin(), a.end()
# define deb(x)          cout<<#x<<"=="<<x<<endl;
# define pb              push_back
# define sc              scanf
# define pr              printf
# define tc              int t; cin>>t; while(t--)
# define rev(s)          reverse(s.begin(),s.end())
# define linija          cout<<"____________\n";

using namespace std;
typedef long long ll;

const int mxN=100005, mod=1e9+7;
int n, a[mxN];
int main(){
   freopen("destruction.in", "r", stdin);
   freopen("destruction.out", "w", stdout);
   cin>>n;
   for(int i=1; i<=n; i++) sc("%d", &a[i]);
   sort(a+1, a+1+n);
   int poc=0;
   for(int i=1; i<=n; i++){
      if(a[i]>poc) poc=a[i];
      else poc++;
   }
   cout<<poc<<endl;

	return 0;
}