#include<cstdio>
#include<string.h>
using namespace std;
int main(){
    int N;
    int A,B,C,D;
    char R[4];
    int array[10];
    int i,j;
    for(i=0;i<10;i++) array[i] = 1;
    scanf("%d",&N);

    for(i=0;i<N;i++){
        scanf("%d %d %d %d",&A,&B,&C,&D);
        scanf("%s",&R);
        if(strcmp(R,"YES")==0){
            for(j=0;j<10;j++){
                if(j != A && j != B && j != C && j != D) array[j] = 0;
            }
        }else{
            for(j=0;j<10;j++){
                if(j == A || j == B || j == C || j == D) array[j] = 0;
            }
        }
    }
    for(i=0;i<10;i++){
        if(array[i]==1) printf("%d\n",i);
    }
    return 0;
}