/*
Main.cpp
LINK : fatal error LNK1104: cannot open file 'lnk8FD.tmp'
*/
#include<cstdio>
#include<cstring>
char str[10],a[110][77]={"http://www.acm.org/"};
int i,l;
int main(){
	//freopen("poj1028.in","r",stdin);
	i=l=0;
	while(1){
		scanf("%s",str);
		if(strcmp(str,"VISIT")==0){
			l=i++;
			scanf("%s",a[i]);
			printf("%s\n",a[i]); 
		}
		if(strcmp(str,"BACK")==0){
			i--;
			if(i>=0)printf("%s\n",a[i]);
			else{printf("Ignored\n"); i++;}
		}
		if(strcmp(str,"FORWARD")==0){
			i++;
			if(i-1<=l)printf("%s\n",a[i]);
			else{printf("Ignored\n"); i--;}
		}
		if(strcmp(str,"QUIT")==0)return 0;
	}
	return 0;
}