#include <iostream>
using namespace std;

int main(){
    int n;
    cin>>n;
    int suma = 0;
    for(int i = 0; i <= n; i++){
        if(i % 2 == 0) suma += i;
    }
    cout<<"Suma: "<<suma;
    return 0;
}

//-----------------------------------------------------------------------------

#include <iostream>
using namespace std;

int main(){
    int n;
    cin>>n;
    int prod = 0;
    for(int i = 0; i <= n; i++){
        if(i % 2 == 1) prod = prod * i;
    }
    cout<<"Produs: "<<prod;
    return 0;
}

//---------------------------------------------------------------------------------

#include <iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    int nr = 0;
    for(int i = 0; i <= n; i++){
        if(i % 3 == 0) nr++;
    }
    cout<<"Numere divizibile: "<<nr;
    return 0;
}