#include <stdio.h>
#include <string.h>
#include <ctype.h>

int main() {

    int x;
    scanf("%d", &x);

    int brojac = 0;
    for(int i = 1; i <= x; i += 1) {
        if(x % i == 0) {
            brojac += 1;
        }
    }
    if(brojac > 2) {
        printf("SLOZEN BROJ\n");
    }
    else {
        printf("PROST BROJ\n");
    }

    return 0;
}