import 'dart:convert';
import 'dart:io';

main() {
  /// No. of Different Characters in the two Strings;
  int diff = 0;

  /// No. of Identical Characters in the two Strings;
  int correct = 0;

  /// Print Msg for User;
  print("hi enter string 1");

  /// Input Code
  var line = stdin.readLineSync(encoding: Encoding.getByName('utf-8'));

  /// Print Msg for User;
  print("hi enter string 2");

  /// Input Code
  var line2 = stdin.readLineSync(encoding: Encoding.getByName('utf-8'));

  /// Calculating the largest Length of the two strings to be Loop Length;
  int loopLength = line.length > line2.length ? line.length : line2.length;

  /// Looping on -
  for (int i = 0; i < loopLength; i++) {
    /// If string length <= i, then there is no string to check so counting++
    if (line.length <= i || line2.length <= i) {
      print("length <= $i");
      diff++;

      /// Stop executing the checks, we already know what we want;
      continue;
    }

    /// Normal equal between characters if not equal counting++
    if (line[i] != line2[i]) {
      print("diff at $i [${line[i]},${line2[i]}]");
      diff++;

      /// Stop executing the checks, we already know what we want;
      continue;
    }

    /// If all the checks are invalid then it's Identical Characters;
    print("correct ${line[i]}");
    correct++;
  }

  /// Printing Result;
  print("diff $diff , correct $correct");
}