day21 part2 get losing game with highest cost
day21 part2 get losing game with highest cost

Calculate the losing game with the highest buying cost.

Signed-off-by: Harshvardhan Pandit <2768ea26ad993ffc67af6284aed35799db2a3f75@gmail.com>

coolharsh55/advent-of-code,coolharsh55/advent-of-code