QOJ.ac
QOJ
			Time Limit:
			8.0 s		
				Memory Limit:
			1024 MB		
				Total points:
			100		
						
			Difficulty: 
			[show]
			
		
		
								
		Hackable ✓
	
#11109. Omniscient Artist / 全知艺术家
统计
			This problem is prepared by 
nzhtl1477			.