#include<stdio.h>
#include<string.h>
char w[101][71];
char s[10];
int c;
int ftop;
void main()
{
	c=0;
	ftop=0;
	strcpy(w[0],"http://www.acm.org/");
	while(scanf("%s",s)!=EOF&&strcmp(s,"QUIT")!=0)
	{
		if(strcmp(s,"VISIT")==0)
		{
			c++;
			scanf("%s",w[c]);
			printf("%s\n",w[c]);
			ftop=c;
		}
	    else if(strcmp(s,"BACK")==0)
		{
			if(c>0)
			{
				c--;
				printf("%s\n",w[c]);
			}
			else
				printf("Ignored\n");
		}
		else if(strcmp(s,"FORWARD")==0)
		{
			if(c<ftop)
			{
				c++;
				printf("%s\n",w[c]);
			}
			else
				printf("Ignored\n");
		}
		else
		{
			printf("wrong\n");
		}

	}
		
}