#include<bits/stdc++.h>
using namespace std;
int main(){
  string filename = __FILE__;
  ifstream ifs(filename);
  vector<string> original;
  string s;
  while(getline(ifs,s)){original.push_back(s);}
  vector<string> modified;
  for(int i=0; i<(int)original.size(); ++i){getline(cin, s);modified.push_back(s);}
  int x = 0;
  for(int i=0; i<(int)original.size(); ++i){
    if(original[i] == modified[i]){
      x += original[i].size()+2;
    }else{
      
      for(int j=0; j<(int)original[i].size(); ++j){
	if(original[i][j] != modified[i][j]){
	  printf("%d\n\"%c\"\n\"%c\"\n", x+j, original[i][j], modified[i][j]);
	}
      }

      break;
    }
  }

  return 0;
}