you give array event eventsi startdayi enddayi every event start startdayi end enddayiyou attend event day d startTimei d endTimei you attend event time dReturn maximum number event attend Example 1input event 122334output 3explanation you attend eventsone way attend shownattend event day 1attend second event day 2attend event day 3example 2input event 12233412output 4 Constraints1 eventslength 105eventsilength 21 startdayi enddayi 105