QOJ.ac
QOJ
			Time Limit:
			1 s		
				Memory Limit:
			1500 MB		
				Total points:
			100		
							Interactive
					
#2786. Scales
统计
			此題目在以下比賽中使用過:
					
		
		The problem is available in the following languages:
		C++11, C++14, C++17, C++20