China Nanchang National Invitational and International Silk-Road Programming Contest - F.Sequence(打表+线段树
题意:给你一个长度为$n$的数组,定义函数$f(l,r)=a_{l}\oplusa_{l+1}\oplus...\oplusa_{r}$,$F(l,r)=f(l,l)\oplusf(l,l+1)\oplus...\oplusf(l,r)\oplusf(l+1,l+1)\oplus...f(l+1,r)\oplus...\oplusf(r,r)$,有两种操作,第一种将数组中某个元素$a[x]$变为$