QOJ.ac
QOJ
			Time Limit:
			5.0 s		
				Memory Limit:
			512 MB		
				Total points:
			100		
									
		Hackable ✓
	
#7125. Bipartite graph coloring
Statistics
			The problem was used in the following contests:
					
			
			This problem is prepared by 
ftiasch			.