素数のやつ（対戦ゲーム）

Both you and your opponent have HP and a cost.
You and your opponent select numbers less than or equal to your cost, and the winner is determined by the combination of numbers.
You consume the cost equal to the number you selected, and if you win, you deal damage equal to the number selected to your opponent.
At the end of turn n, you recover n cost.
▼The winner of a number match is determined as follows:
If both numbers are prime, the smaller number wins.
If the larger number contains the smaller number as a divisor, the larger number wins.
If neither number is prime nor a divisor of the smaller number, it's a tie; that is, if there is a common divisor of 2 or greater.
0 and 1 have special handling.
0 deals instant death damage to 1 and loses to all other numbers.
1 wins against all numbers except 0 (deals 1 damage).
Same numbers result in a tie.

Example:
3 vs 5 → 3 wins
2 vs 4 → 4 wins
1 vs 12 → 1 wins
8 vs 12 → Tie
0 vs 1 → The player who played 1 dies instantly
0 vs 7 → 12 wins