#include <stdio.h>
#include <stdlib.h>
int main(int argc, const char * argv[]) {
    int n;
    scanf("%d", &n);
    
    int broj_na_deliteli = 0;
    
    for(int i = 1; i <= n; i++) {
        if(n % i == 0) {
            broj_na_deliteli++;
        }
    }
    if(broj_na_deliteli == 2) {
        printf("PROST");
    }
    else {
        printf("SLOZEN");
    }
    return 0;
}