你不行啊

#include[HTML_REMOVED]
#include[HTML_REMOVED]
#include[HTML_REMOVED]
#include[HTML_REMOVED]
using namespace std;
struct node
{
int data,rev,sum;
node son[2],pre;
bool judge();
bool isroot();
void pushdown();
void update();
void setson(node child,int lr);
}lct[233];
int top,a,b;
node getnew(int x)
{
node now=lct+ ++top;
now->data=x;
now->pre=now->son[1]=now->son[0]=lct;
now->sum=0;
now->rev=0;
return now;
}
bool node::judge(){return pre->son[1]==this;}
bool node::isroot()
{
if(pre==lct)
{
return true;
}
return !(pre->son[1]==this||pre->son[0]==this);
}
void node::pushdown()
{
if(this==lct||!rev)return;
swap(son[0],son[1]);
son[0]->rev^=1;
son[1]->rev^=1;
rev=0;
}
void node::update(){sum=son[1]->sum+son[0]->sum+data;}
void node::setson(node child,int lr)
{
this->pushdown();
child->pre=this;
son[lr]=child;
this->update();
}
void rotate(node now)
{
node father=now->pre,grandfa=father->pre;
if(!father->isroot())
{
grandfa->pushdown();
}
father->pushdown();now->pushdown();
int lr=now->judge();
father->setson(now->son[lr^1],lr);
if(father->isroot())
{
now->pre=grandfa;
}
else
{
grandfa->setson(now,father->judge());
}
now->setson(father,lr^1);
father->update();now->update();
if(grandfa!=lct)
{
grandfa->update();
}
}
void splay(node now)
{
if(now->isroot())
{
return;
}
for(;!now->isroot();rotate(now))
{
if(!now->pre->isroot())
{
now->judge()==now->pre->judge()?rotate(now->pre):rotate(now);
}
}
}
node access(node now)
{
node last=lct;
for(;now!=lct;last=now,now=now->pre)
{
splay(now);
now->setson(last,1);
}
return last;
}
void changeroot(node now)
{
access(now)->rev^=1;
splay(now);
}
void connect(node x,node y)
{
changeroot(x);
x->pre=y;
access(x);
}
void cut(node x,node y)
{
changeroot(x);
access(y);
splay(x);
x->pushdown();
x->son[1]=y->pre=lct;
x->update();
}
int query(node x,node y)
{
changeroot(x);
node now=access(y);
return now->sum;
}
int main()
{
cin>>a>>b;
node A=getnew(a);
node *B=getnew(b);
connect(A,B);
cut(A,B);
connect(A,B);
cout<<query(A,B);
return 0;
}

？好家伙