USACO 2017 December Contest, Platinum Problem 3. Greedy Gift Takers
USACO 2017年首轮月赛白金级题3 Greedy Gift Takers Farmer John's nemesis, Farmer Nhoj, has N cows (1≤ N ≤ 105), conveniently numbered 1... N. They have unexpectedly turned up at Farmer John's farm, s...