#include<bits/stdc++.h>
#define FOR(v, a, b) for(int v = (a); v < (b); ++v)
#define FORE(v, a, b) for(int v = (a); v <= (b); ++v)
#define REP(v, n) FOR(v, 0, n)
#define REPE(v, n) FORE(v, 0, n)
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;
  REP(i,(int)original.size()){
    cin >> s;
    modified.push_back(s);
  }

  int x = 0;
  REP(i,(int)original.size()){
    if(original[i] == modified[i]){
      x += original[i].size();
    }else{
      
      REP(j,(int)original[i].size()){
	if(original[i][j] != modified[i][j]){
	  cout << x+j << endl;
	  cout << "\"" << original[i][j] << "\"" << endl;
	  cout << "\"" << modified[i][j] << "\"" << endl;
	}
      }

      break;
    }
  }

  return 0;
}