type Calendar = {
  month: number;
  day: number;
};

const calendar: Calendar[] = [
  { month: 1, day: 1 },
  { month: 1, day: 2 },
  { month: 1, day: 3 },
  { month: 1, day: 4 },
  { month: 1, day: 5 },
  { month: 1, day: 6 },
  { month: 1, day: 7 },
  { month: 1, day: 8 },
  { month: 1, day: 9 },
  { month: 1, day: 10 },
  { month: 1, day: 11 },
  { month: 1, day: 12 },
  { month: 1, day: 13 },
  { month: 1, day: 14 },
  { month: 1, day: 15 },
  { month: 1, day: 16 },
  { month: 1, day: 17 },
  { month: 1, day: 18 },
  { month: 1, day: 19 },
  { month: 1, day: 20 },
  { month: 1, day: 21 },
  { month: 1, day: 22 },
  { month: 1, day: 23 },
  { month: 1, day: 24 },
  { month: 1, day: 25 },
  { month: 1, day: 26 },
  { month: 1, day: 27 },
  { month: 1, day: 28 },
  { month: 1, day: 29 },
  { month: 1, day: 30 },
  { month: 1, day: 31 },

  { month: 2, day: 1 },
  { month: 2, day: 2 },
  { month: 2, day: 3 },
  { month: 2, day: 4 },
  { month: 2, day: 5 },
  { month: 2, day: 6 },
  { month: 2, day: 7 },
  { month: 2, day: 8 },
  { month: 2, day: 9 },
  { month: 2, day: 10 },
  { month: 2, day: 11 },
  { month: 2, day: 12 },
  { month: 2, day: 13 },
  { month: 2, day: 14 },
  { month: 2, day: 15 },
  { month: 2, day: 16 },
  { month: 2, day: 17 },
  { month: 2, day: 18 },
  { month: 2, day: 19 },
  { month: 2, day: 20 },
  { month: 2, day: 21 },
  { month: 2, day: 22 },
  { month: 2, day: 23 },
  { month: 2, day: 24 },
  { month: 2, day: 25 },
  { month: 2, day: 26 },
  { month: 2, day: 27 },
  { month: 2, day: 28 },

  { month: 3, day: 1 },
  { month: 3, day: 2 },
  { month: 3, day: 3 },
  { month: 3, day: 4 },
  { month: 3, day: 5 },
  { month: 3, day: 6 },
  { month: 3, day: 7 },
  { month: 3, day: 8 },
  { month: 3, day: 9 },
  { month: 3, day: 10 },
  { month: 3, day: 11 },
  { month: 3, day: 12 },
  { month: 3, day: 13 },
  { month: 3, day: 14 },
  { month: 3, day: 15 },
  { month: 3, day: 16 },
  { month: 3, day: 17 },
  { month: 3, day: 18 },
  { month: 3, day: 19 },
  { month: 3, day: 20 },
  { month: 3, day: 21 },
  { month: 3, day: 22 },
  { month: 3, day: 23 },
  { month: 3, day: 24 },
  { month: 3, day: 25 },
  { month: 3, day: 26 },
  { month: 3, day: 27 },
  { month: 3, day: 28 },
  { month: 3, day: 29 },
  { month: 3, day: 30 },
  { month: 3, day: 31 },

  { month: 4, day: 1 },
  { month: 4, day: 2 },
  { month: 4, day: 3 },
  { month: 4, day: 4 },
  { month: 4, day: 5 },
  { month: 4, day: 6 },
  { month: 4, day: 7 },
  { month: 4, day: 8 },
  { month: 4, day: 9 },
  { month: 4, day: 10 },
  { month: 4, day: 11 },
  { month: 4, day: 12 },
  { month: 4, day: 13 },
  { month: 4, day: 14 },
  { month: 4, day: 15 },
  { month: 4, day: 16 },
  { month: 4, day: 17 },
  { month: 4, day: 18 },
  { month: 4, day: 19 },
  { month: 4, day: 20 },
  { month: 4, day: 21 },
  { month: 4, day: 22 },
  { month: 4, day: 23 },
  { month: 4, day: 24 },
  { month: 4, day: 25 },
  { month: 4, day: 26 },
  { month: 4, day: 27 },
  { month: 4, day: 28 },
  { month: 4, day: 29 },
  { month: 4, day: 30 },

  { month: 5, day: 1 },
  { month: 5, day: 2 },
  { month: 5, day: 3 },
  { month: 5, day: 4 },
  { month: 5, day: 5 },
  { month: 5, day: 6 },
  { month: 5, day: 7 },
  { month: 5, day: 8 },
  { month: 5, day: 9 },
  { month: 5, day: 10 },
  { month: 5, day: 11 },
  { month: 5, day: 12 },
  { month: 5, day: 13 },
  { month: 5, day: 14 },
  { month: 5, day: 15 },
  { month: 5, day: 16 },
  { month: 5, day: 17 },
  { month: 5, day: 18 },
  { month: 5, day: 19 },
  { month: 5, day: 20 },
  { month: 5, day: 21 },
  { month: 5, day: 22 },
  { month: 5, day: 23 },
  { month: 5, day: 24 },
  { month: 5, day: 25 },
  { month: 5, day: 26 },
  { month: 5, day: 27 },
  { month: 5, day: 28 },
  { month: 5, day: 29 },
  { month: 5, day: 30 },
  { month: 5, day: 31 },

  { month: 6, day: 1 },
  { month: 6, day: 2 },
  { month: 6, day: 3 },
  { month: 6, day: 4 },
  { month: 6, day: 5 },
  { month: 6, day: 6 },
  { month: 6, day: 7 },
  { month: 6, day: 8 },
  { month: 6, day: 9 },
  { month: 6, day: 10 },
  { month: 6, day: 11 },
  { month: 6, day: 12 },
  { month: 6, day: 13 },
  { month: 6, day: 14 },
  { month: 6, day: 15 },
  { month: 6, day: 16 },
  { month: 6, day: 17 },
  { month: 6, day: 18 },
  { month: 6, day: 19 },
  { month: 6, day: 20 },
  { month: 6, day: 21 },
  { month: 6, day: 22 },
  { month: 6, day: 23 },
  { month: 6, day: 24 },
  { month: 6, day: 25 },
  { month: 6, day: 26 },
  { month: 6, day: 27 },
  { month: 6, day: 28 },
  { month: 6, day: 29 },
  { month: 6, day: 30 },

  { month: 7, day: 1 },
  { month: 7, day: 2 },
  { month: 7, day: 3 },
  { month: 7, day: 4 },
  { month: 7, day: 5 },
  { month: 7, day: 6 },
  { month: 7, day: 7 },
  { month: 7, day: 8 },
  { month: 7, day: 9 },
  { month: 7, day: 10 },
  { month: 7, day: 11 },
  { month: 7, day: 12 },
  { month: 7, day: 13 },
  { month: 7, day: 14 },
  { month: 7, day: 15 },
  { month: 7, day: 16 },
  { month: 7, day: 17 },
  { month: 7, day: 18 },
  { month: 7, day: 19 },
  { month: 7, day: 20 },
  { month: 7, day: 21 },
  { month: 7, day: 22 },
  { month: 7, day: 23 },
  { month: 7, day: 24 },
  { month: 7, day: 25 },
  { month: 7, day: 26 },
  { month: 7, day: 27 },
  { month: 7, day: 28 },
  { month: 7, day: 29 },
  { month: 7, day: 30 },
  { month: 7, day: 31 },

  { month: 8, day: 1 },
  { month: 8, day: 2 },
  { month: 8, day: 3 },
  { month: 8, day: 4 },
  { month: 8, day: 5 },
  { month: 8, day: 6 },
  { month: 8, day: 7 },
  { month: 8, day: 8 },
  { month: 8, day: 9 },
  { month: 8, day: 10 },
  { month: 8, day: 11 },
  { month: 8, day: 12 },
  { month: 8, day: 13 },
  { month: 8, day: 14 },
  { month: 8, day: 15 },
  { month: 8, day: 16 },
  { month: 8, day: 17 },
  { month: 8, day: 18 },
  { month: 8, day: 19 },
  { month: 8, day: 20 },
  { month: 8, day: 21 },
  { month: 8, day: 22 },
  { month: 8, day: 23 },
  { month: 8, day: 24 },
  { month: 8, day: 25 },
  { month: 8, day: 26 },
  { month: 8, day: 27 },
  { month: 8, day: 28 },
  { month: 8, day: 29 },
  { month: 8, day: 30 },
  { month: 8, day: 31 },

  { month: 9, day: 1 },
  { month: 9, day: 2 },
  { month: 9, day: 3 },
  { month: 9, day: 4 },
  { month: 9, day: 5 },
  { month: 9, day: 6 },
  { month: 9, day: 7 },
  { month: 9, day: 8 },
  { month: 9, day: 9 },
  { month: 9, day: 10 },
  { month: 9, day: 11 },
  { month: 9, day: 12 },
  { month: 9, day: 13 },
  { month: 9, day: 14 },
  { month: 9, day: 15 },
  { month: 9, day: 16 },
  { month: 9, day: 17 },
  { month: 9, day: 18 },
  { month: 9, day: 19 },
  { month: 9, day: 20 },
  { month: 9, day: 21 },
  { month: 9, day: 22 },
  { month: 9, day: 23 },
  { month: 9, day: 24 },
  { month: 9, day: 25 },
  { month: 9, day: 26 },
  { month: 9, day: 27 },
  { month: 9, day: 28 },
  { month: 9, day: 29 },
  { month: 9, day: 30 },

  { month: 10, day: 1 },
  { month: 10, day: 2 },
  { month: 10, day: 3 },
  { month: 10, day: 4 },
  { month: 10, day: 5 },
  { month: 10, day: 6 },
  { month: 10, day: 7 },
  { month: 10, day: 8 },
  { month: 10, day: 9 },
  { month: 10, day: 10 },
  { month: 10, day: 11 },
  { month: 10, day: 12 },
  { month: 10, day: 13 },
  { month: 10, day: 14 },
  { month: 10, day: 15 },
  { month: 10, day: 16 },
  { month: 10, day: 17 },
  { month: 10, day: 18 },
  { month: 10, day: 19 },
  { month: 10, day: 20 },
  { month: 10, day: 21 },
  { month: 10, day: 22 },
  { month: 10, day: 23 },
  { month: 10, day: 24 },
  { month: 10, day: 25 },
  { month: 10, day: 26 },
  { month: 10, day: 27 },
  { month: 10, day: 28 },
  { month: 10, day: 29 },
  { month: 10, day: 30 },
  { month: 10, day: 31 },

  { month: 11, day: 1 },
  { month: 11, day: 2 },
  { month: 11, day: 3 },
  { month: 11, day: 4 },
  { month: 11, day: 5 },
  { month: 11, day: 6 },
  { month: 11, day: 7 },
  { month: 11, day: 8 },
  { month: 11, day: 9 },
  { month: 11, day: 10 },
  { month: 11, day: 11 },
  { month: 11, day: 12 },
  { month: 11, day: 13 },
  { month: 11, day: 14 },
  { month: 11, day: 15 },
  { month: 11, day: 16 },
  { month: 11, day: 17 },
  { month: 11, day: 18 },
  { month: 11, day: 19 },
  { month: 11, day: 20 },
  { month: 11, day: 21 },
  { month: 11, day: 22 },
  { month: 11, day: 23 },
  { month: 11, day: 24 },
  { month: 11, day: 25 },
  { month: 11, day: 26 },
  { month: 11, day: 27 },
  { month: 11, day: 28 },
  { month: 11, day: 29 },
  { month: 11, day: 30 },

  { month: 12, day: 1 },
  { month: 12, day: 2 },
  { month: 12, day: 3 },
  { month: 12, day: 4 },
  { month: 12, day: 5 },
  { month: 12, day: 6 },
  { month: 12, day: 7 },
  { month: 12, day: 8 },
  { month: 12, day: 9 },
  { month: 12, day: 10 },
  { month: 12, day: 11 },
  { month: 12, day: 12 },
  { month: 12, day: 13 },
  { month: 12, day: 14 },
  { month: 12, day: 15 },
  { month: 12, day: 16 },
  { month: 12, day: 17 },
  { month: 12, day: 18 },
  { month: 12, day: 19 },
  { month: 12, day: 20 },
  { month: 12, day: 21 },
  { month: 12, day: 22 },
  { month: 12, day: 23 },
  { month: 12, day: 24 },
  { month: 12, day: 25 },
  { month: 12, day: 26 },
  { month: 12, day: 27 },
  { month: 12, day: 28 },
  { month: 12, day: 29 },
  { month: 12, day: 30 },
  { month: 12, day: 31 },
];

let count = 0;
for (let i = 0; i < calendar.length; i++) {
  const { month, day } = calendar[i];

  const isHappyDay = month === Math.floor((day / 10) % 10) + (day % 10);

  // process.stdout.write(`${month}/${day}: `);
  // process.stdout.write(`ten:  ${Math.floor((day / 10) % 10)} `);
  // process.stdout.write(`one: ${day % 10} `);
  // process.stdout.write(String(isHappyDay));
  // console.log();

  if (isHappyDay) {
    count++;
  }
}

console.log(count);