继续过Hard模式的题目吧。

 

	#	Title	Editorial	Acceptance	Difficulty	Frequency
。	65			12.6%	Hard
。	126			13.6%	Hard
。	149			15.6%	Hard
。	146			16.0%	Hard
。	68			18.1%	Hard
。	460			19.0%	Hard
。	44			19.0%	Hard
。	308			19.8%	Hard
。	4			20.8%	Hard
。	420			21.0%	Hard
。	273			21.1%	Hard
。	30			21.7%	Hard
。	440			22.1%	Hard
。	140			22.2%	Hard
。	212			22.2%	Hard
。	269			22.3%	Hard
。	174			22.9%	Hard
。	214			23.0%	Hard
。	446			23.0%	Hard
。	32			23.1%	Hard
。	295			23.3%	Hard
。	132			23.4%	Hard
。	10			23.6%	Hard
。	76			23.8%	Hard
。	188			23.8%	Hard
。	321			23.9%	Hard
。	135			23.9%	Hard
。	335			23.9%	Hard
	97			23.9%	Hard
	391			24.2%	Hard
	158			24.4%	Hard
	466			24.6%	Hard
	336			24.7%	Hard
	41			24.9%	Hard
	124			25.0%	Hard
	224			25.5%	Hard
	218			25.5%	Hard
	84			25.6%	Hard
	23			25.9%	Hard
	45			26.0%	Hard
	85			26.1%	Hard
	57			26.3%	Hard
	138			26.6%	Hard
	233			27.3%	Hard
	381			28.0%	Hard
	37			28.1%	Hard
	432			28.2%	Hard
	87			28.3%	Hard
	123			28.3%	Hard
	56			28.4%	Hard
	282			28.5%	Hard
	316			28.6%	Hard
	164			28.6%	Hard
	99			28.7%	Hard
	327			28.9%	Hard
	51			29.0%	Hard
	25			29.7%	Hard
	472			30.1%	Hard
	465			30.1%	Hard
	248			30.5%	Hard
	72			30.6%	Hard
	115			30.6%	Hard
	403			30.9%	Hard
	411			31.1%	Hard
	239			31.4%	Hard
	330			31.5%	Hard
	297			31.6%	Hard
	354			31.8%	Hard
	358			31.8%	Hard
	33			31.9%	Hard
	363			32.1%	Hard
	410			32.2%	Hard
	480			33.1%	Hard
	317			33.3%	Hard
	117			33.5%	Hard
	315			33.5%	Hard
	301			34.5%	Hard
	42			35.3%	Hard
	128			35.3%	Hard
	329			35.4%	Hard
	407			35.6%	Hard
	154			36.2%	Hard
	265			37.1%	Hard
	272			37.6%	Hard
	291			37.7%	Hard
	305			38.1%	Hard
	380			38.4%	Hard
	145			38.4%	Hard
	340			38.6%	Hard
	352			38.9%	Hard
	159			39.7%	Hard
	312			41.6%	Hard
	287			41.8%	Hard
	425			41.9%	Hard
	52			42.8%	Hard
	302			44.0%	Hard
	471			44.2%	Hard
	296			50.4%	Hard

 

335

23.9%

Hard

挺难的，可以看这里：