#include<iostream>
#include<vector>
using namespace std;
class Counter{
    public:
    static int machineCount;
    Counter(){
        machineCount++;
    }
};
int Counter::machineCount = 0;
int main(){
    int n;
    if(!(cin>>n)) return 0;
    if(n<1 || n>100){
        cout<<'Invalid input'<<endl;
        return 0;
    }
    vector<counter>machines(n);
    cout<<Counter::machineCount<,endl;
    return 0;
}