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

int main(void){
	int val = 0;
	scanf("%d",&val);
	
	char str1[val];
	for(int i = 0;i < val;i ++){
		scanf("%s",&str1[i]);
		printf("str1：%s\n",&str1[i]);
	}
	char str2[val];
	for(int i = 0;i < val;i ++){
		scanf("%s",&str2[i]);
		printf("str2：%s\n",&str2[i]);
	}
	
	for(int i = 0;i < val;i ++){
		printf("比較1：%s\n",&str1[i]);
		printf("比較2：%s\n",&str2[i]);
		if(strcmp(&str1[i],&str2[i]) != 0){
			printf("%d\n%s\n%s\n",i + 1,&str1[i],&str2[i]);
			return 0;
		}
	}
}