set intersection
set intersection

MrinmoiHossain/HackerRank,MrinmoiHossain/HackerRank,MrinmoiHossain/HackerRank,MrinmoiHossain/HackerRank,MrinmoiHossain/HackerRank,MrinmoiHossain/HackerRank,MrinmoiHossain/HackerRank,MrinmoiHossain/HackerRank