#include<stdio.h>
#define MAX 100

char nowadd[50];

typedef struct
{
	char cw[MAX][50];
	int top;
}cug;


void push(cug *h)
{
h->top+=1;
	strcpy(h->cw[h->top],nowadd);
}


void pop(cug *v)
{
	if(v->top>=0) {
		strcpy(nowadd,v->cw[v->top]);
	v->top-=1;}
}



int judge(cug *r)
{
	if(r->top<0) return 0;
	return 1;
}


void main()
{
	int i;
	char oradd[50],ord[10];
	cug bs,fs;
	bs.top=-1;
	fs.top=-1;
	strcpy(nowadd,"http://www.acm.org/");
		
	
	scanf("%s",ord);		
	while(strcmp(ord,"QUIT")&&(!strcmp(ord,"BACK")||!strcmp(ord,"VISIT")||!strcmp(ord,"FORWARD")))
		{
			if(!strcmp(ord,"BACK"))
			{
			
				i=judge(&bs);
				if(i) 
				{   
					push(&fs);
                    pop(&bs);
					puts(nowadd);
					
	
				}
				else printf("Ignored\n");
			}

			if(!strcmp(ord,"VISIT"))
			{   
		
				
				push(&bs);
				fs.top=-1;
	
				scanf("%s",oradd);
				strcpy(nowadd,oradd);
				puts(nowadd);
				
	
			}

			if(!strcmp(ord,"FORWARD"))
			{   
		
				i=judge(&fs);
				if(i) 
				{
					push(&bs);
					pop(&fs);

					puts(nowadd);
						
	
				}
				else printf("Ignored\n");
			}
			scanf("%s",ord);
	}
}