#include <iostream>

using namespace std;
int main()
{
    int a;
    cin >> a;
    int deliteli = 0;
    
    for(int i = 1; i <= a; i++) {
        if(a % i == 0) {
            deliteli++;
        }
    }
    
    switch(deliteli) {
        case 2:
            cout << "prost" << endl;
            break;
        default:
            cout << "slozhen" << endl;
            break;
    }
    return 0;
}