25

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

int main(){
    int n = 0, i = 0, p = 0, q = 0, r = 0;
    char comandos[1000];

    scanf("%d",&n);

    while(n != 0){
        scanf("%s",comandos);
        for (i = 0;i < n;i++){
            if(comandos[i] == 'p'){
                p = p + 1;
                r = r + 1;
            }else{
                q = q + 1;
                r = r - 1;
            }
        }
        if(p > q){
            if(r > 4){
                r = (int)(r/4);
            }

            if(r == 1){
                printf("L\n");
            }else{
                if(r == 2){
                    printf("r\n");
                }else{
                    if(r == 3){
                        printf("O\n");
                    }else{
                        printf("n\n");
                    }
                }
            }
        }else{
            if(q > p){
                r = r*(-1);
                if(r > 4){
                r = (int)(r/4);
            }

            if(r == 1){
                printf("O\n");
            }else{
                if(r == 2){
                    printf("r\n");
                }else{
                    if(r == 3){
                        printf("L\n");
                    }else{
                        printf("n\n");
                    }
                }
              }
            }else{
                printf("n\n");
            }
        }
        r = 0; p = 0; q = 0;
        scanf("%d",&n);
    }

    return 0;
}