function memoryGame(input) {
  let sequance = input.shift().split(' ');
  let movesCount = 0;
  let command = input.shift();
  let sequanceLength = sequance.length;

  while (command !== 'end') {
    let indexes = command.split(' ');
    indexes.sort((a, b) => b - a);
    movesCount++;
    let firstIndex = Number(indexes[0]);
    let secondIndex = Number(indexes[1]);

    if (
      firstIndex === secondIndex ||
      firstIndex < 0 ||
      secondIndex < 0 ||
      firstIndex > sequanceLength - 1 ||
      secondIndex > sequanceLength - 1
    ) {
      let startingIndex = sequanceLength / 2 - 1;
      let newElements = `-${movesCount}a`;
      sequance.splice(startingIndex, 0, newElements, newElements);
      console.log(`Invalid input! Adding additional elements to the board`);
    } else if (sequance[firstIndex] === sequance[secondIndex]) {
      let element = sequance.splice(Number(firstIndex), 1);
      sequance.splice(Number(secondIndex), 1);
      console.log(`Congrats! You have found matching elements - ${element}!`);
    } else if (sequance[firstIndex] !== sequance[secondIndex]) {
      console.log(`Try again!`);
    }

    command = input.shift();
    if (sequance.length <= 1) {
      console.log(`You have won in ${movesCount} turns!`);
      break;
    } else if (sequance.length > 0 && command == 'end') {
      console.log(`Sorry you lose :(`);
      console.log(sequance.join(' '));
    }
  }
}