#include <iostream>
#include <vector>
using namespace std;

int main() {

    int n;
    cin >> n;
    vector<int> v;
    for(int i = 0; i < n; i++) {
        int x;
        cin >> x;

        v.push_back(x);
    }

    cout << v.size() << endl;
    return 0;
}