bzoj 1968: [Ahoi2005]COMMON 约数研究 (思维题)Nov 18, 2016·1 minACM Math 思维1968: [Ahoi2005]COMMON 约数研究 # Time Limit: 1 Sec Memory Limit: 64 MB Submit: 1997 Solved: 1508 [Submit][Status][Discuss]