我看看@[星灵王](/space/show?uid=153083)
by 月落落落 @ 2018-12-22 14:49:12
@星灵王，我觉得是二分枚举长度+hash
by 月落落落 @ 2018-12-22 14:50:05
if(sum(t1+s1,t2)!=sum(t1,t2-s1)) 没毛病
by 月落落落 @ 2018-12-22 14:50:18