$execute in colosseum_of_fools:colosseum_of_fools positioned $(x) 0 $(z) run tp @s ~ ~ ~30
$execute unless data storage colosseum_of_fools:yrjjc world.x$(x)_z$(z) in colosseum_of_fools:colosseum_of_fools positioned $(x) 0 $(z) run summon marker ~ ~ ~ {Tags:["jjc","jjc_colosseum_spawn","jjc_yrjjc"]}
$data merge storage colosseum_of_fools:yrjjc {world:{x$(x)_z$(z):1}}