没什么好说的,树套树应该随便搞我在128MB空间下大胆的写了主席树当然要把原树和修改树分开来建没有然后了 type node=record l,r,s:longint; end; ..] of node; c:..] of int64; h,ph,a,b,d1,d2:..] of longint; dd1,dd2:..,..] of longint; d,t1,t2,i,x,y,n,m,t:longint; ans:int64; function lowbit(x:longint):longin…