pj出这种题如何？(逃)
by 142857cs @ 2018-09-30 16:42:01
时限改到0.1s(逃)
by 142857cs @ 2018-09-30 16:58:23
顾z大佬在洛谷日报中说这题曾经是黄题，后来就蓝了23333
by afowww @ 2018-10-18 21:46:47
最多也就绿色吧
by 白厶冯弓吿氵 @ 2019-11-22 15:37:56