#include<stdio.h>
int main(){char ch;FILE *fp;char std[114514];scanf("%s", std);fp = fopen("source.txt","r");int index;index = 0;while(1){ch = fgetc(fp);if(ch != std[index]){printf("%d\n\"%c\"\n\"%c\"", index, ch, std[index]);break;}index = index + 1;}fclose(fp);return 0;}