#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 *p1 = str1;
	
	char str2[val];
	for(int i = 0;i < val;i ++){
		scanf("%s",&str2[i]);
		printf("str2：%s\n",&str2[i]);
	}
	char *p2 = str2;
	
	int i = 1;
	while(*p1 != val){
		printf("比較1：%s\n",p1);
		printf("比較2：%s\n",p2);
		if(strcmp(p1,p2) != 0){
			printf("%d\n%s\n%s\n",i,p1,p2);
			return 0;
			*p1++;
			*p2++;
			i++;
		}
		
	}
}