#include <stdio.h>
#include <string.h>

#define MAXN 50
#define MAXNUM 100

int sadrzi(char reci[][MAXN], int n, char rec[MAXN]){
	int i=0;
	for(i=0; i<n; i++)
		if(strcmp(reci[i], rec)==0)
			return 1;
	return 0;
}

int main(){
	char naziv[MAXN];
	char reci[MAXNUM][MAXN];
	char rec[MAXN];
	FILE *fulaz=NULL, *fizlaz=NULL;
	int i, n, k=0;

	scanf("%s", naziv);
	fulaz = fopen(naziv, "r");
	fizlaz = fopen("rez.txt", "w");
	if(fulaz==NULL || fizlaz == NULL){
		printf("-1\n");
		return 1;
	}

	fscanf(fulaz, "%d", &n); 

	for(i=0; i<n; i++){
		fscanf(fulaz, "%s", rec);
		printf("%s\n", rec);
		if(!sadrzi(reci, k, rec)){
			strcpy(reci[k], rec);
			k++;
		}	
	}

	for(i=0; i<k; i++)
		fprintf(fizlaz, "%s\n", reci[i]);

	fclose(fulaz);
	fclose(fizlaz);
	return 0;
}