Alice Bob travel Rome separate business meetingsyou give 4 string arrivealice leaveAlice arriveBob leaveBob Alice city date arriveAlice leaveAlice inclusive Bob city date arriveBob leaveBob inclusive each 5character string format MMDD corresponding month day datereturn total number day Alice Bob Rome togetheryou assume date occur calendar year leap year note number day month represent 31 28 31 30 31 30 31 31 30 31 30 31 Example 1input arrivealice 0815 leaveAlice 0818 arriveBob 0816 leaveBob 0819output 3explanation Alice Rome August 15 August 18 Bob Rome August 16 August 19 they Rome August 16th 17th 18th answer 3example 2input arriveAlice 1001 leaveAlice 1031 arriveBob 1101 leaveBob 1231output 0explanation there day Alice Bob Rome return 0 ConstraintsAll date provide format MMDDAlice Bobs arrival date early equal leaving datesthe give date valid date nonleap year