USACO 2017 DECEMBER CONTEST, GOLD PROBLEM 3. HAYBALE FEAST
USACO 2017年首轮月赛金级题3 HAYBALE FEAST Farmer John is preparing a delicious meal for his cows! In his barn, he has N haybales ( 1 ≤ N ≤ 100,000 ). The ith haybale has a certain flavor Fi ( 1 ≤ F...