#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int main() {
    int n;
    cin >> n;
    if (n % 2 == 0) {
        cout << 2 + n / 2 - 1 << endl;
    } else {
        cout << 1 << endl;
    }
	return 0;
}