[leetcode] 1503. Last Moment Before All Ants Fall Out of a Plank
DescriptionWehaveawoodenplankofthelengthnunits.Someantsarewalkingontheplank,eachantmoveswithspeed1unitpersecond.Someoftheantsmovetotheleft,theothermovetotheright.Whentwoantsmovingintwodifferentdirecti