#include<stdio.h>

int main(void){
	int a,b,c,d,n,i,j,k[16]={0};
	char s[4];
	scanf("%d",&n);
	for(i = 1;i <= n;i++){
		scanf("%d%d%d%d%s",&a,&b,&c,&d,s);
		for(j = 0;j <= 9;j++){
			if(j == a || j == b || j == c || j == d){
				if(s[0] == 'N'){k[j] = 1;}
			}
			else{
				if(s[0] == 'Y'){k[j] = 1;}
			}
		}
	}
	for(i = 0;i <= 9;i++){
		if(!(k[i])){printf("%d\n",i);}
	}
	return 0;
}