@[ueettttuj](/space/show?uid=55843)
把t==3,upson(xx,zz%p)改为upson(xx,yy%p)。
把build()中tree2[rt].sum=tree3[rt].val;
改为tree2[rt].sum=tree3[l].val;
by wkywkywky @ 2019-07-03 21:22:21
万分感谢@[chenyewei_1234](/space/show?uid=43697) @[wkywkywky](/space/show?uid=133954)
by ueettttuj @ 2019-07-04 08:28:38