[置頂]①scoreboard objectives add w dummy

②execute @e【type=minecraft:snowball】 ~ ~ ~ scoreboard players add @p【r=6】?w 1

execute @e【type=minecraft:snowball】 ~ ~ ~ give @p snowball 1

execute @e【type=minecraft:snowball】 ~ ~ ~ kill @s

③execute @a【scores={w=3..}】 ~ ~ ~ scoreboard players set @s w 1

scoreboard players set @a【rxm=88】 w 0