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神牛啊……威武!In Reply To:splay竟然超时了。这题有什么特别需要注意的吗? Posted by:AllwaysLoser at 2009-04-25 14:37:17 > 我不明白了
> /*
> 5
> 1
> 2
> 3
> 4
> 5
> 2
> ADD 2 4 1
> MIN 4 5
> */
> // 5
> #include <cstdio>
> using namespace std;
> #define NODEEXIT 1
> #define NODEREVERSE 2
> #define BigNum 1100000000
> struct Tnode{
> int mark;
> int v,m,sz,delta;
> Tnode *fa,*lc,*rc;
> int type();
> }_no,*no;
> Tnode tpool[200000];
> int tpc;
> Tnode *root;
> int Tnode::type(){
> if (fa==no)return 0;
> if (fa->lc==this)return -1;
> return 1;
> }
> inline Tnode* getNew(){Tnode *r;
> r=&(tpool[tpc++]);
> r->sz=1;r->mark=NODEEXIT;r->delta=0;
> return r;
> }
> void NoMark(Tnode *p){if (p==no)return;
> Tnode *t;
> if (p->mark&NODEREVERSE){
> t=p->lc;p->lc=p->rc;p->rc=t;
> if (p->lc!=no)p->lc->mark^=NODEREVERSE;
> if (p->rc!=no)p->rc->mark^=NODEREVERSE;
> p->mark&=~NODEREVERSE;
> }
> if (p->delta){
> if (p->lc!=no){
> p->lc->delta+=p->delta;
> p->lc->v+=p->delta;
> p->lc->m+=p->delta;
> }
> if (p->rc!=no){
> p->rc->delta+=p->delta;
> p->rc->v+=p->delta;
> p->rc->m+=p->delta;
> }
> p->delta=0;
> }
> }
> void Correct(Tnode *p){
> p->sz=p->lc->sz+p->rc->sz+((p->mark&NODEEXIT)&&1);
> p->m=BigNum;
> if (p->mark&NODEEXIT)p->m=p->v;
> if (p->lc->m+p->delta<p->m)p->m=p->lc->m+p->delta;
> if (p->rc->m+p->delta<p->m)p->m=p->rc->m+p->delta;
> }
> void zig(Tnode *p){
> if (root==p->fa)root=p;
> NoMark(p);
> p->fa->lc=p->rc;
> if (p->rc!=no)p->rc->fa=p->fa;
> p->rc=p->fa;
> p->fa=p->fa->fa;
> if (p->fa!=no){
> if (p->rc->type()==1)p->fa->rc=p;
> else p->fa->lc=p;
> }
> p->rc->fa=p;
> Correct(p->rc);
> Correct(p);
> }
> void zag(Tnode *p){
> if (root==p->fa){
> root=p;
> }
> NoMark(p);
> p->fa->rc=p->lc;
> if (p->lc!=no)p->lc->fa=p->fa;
> p->lc=p->fa;
> p->fa=p->fa->fa;
> if (p->fa!=no){
> if (p->lc->type()==1){
> p->fa->rc=p;
> }
> else {
> p->fa->lc=p;
> }
> }
> p->lc->fa=p;
> Correct(p->lc);
> Correct(p);
> }
> void Splay(Tnode *p){
> while (p!=root){
> if (p->fa==root){
> if (p->type()==-1)zig(p);
> else zag(p);
> }else if (p->fa->type()==-1){
> if (p->type()==-1){
> zig(p->fa);
> zig(p);
> }else{
> zag(p);
> zig(p);
> }
> }else{
> if (p->type()==-1){
> zig(p);
> zag(p);
> }else{
> zag(p->fa);
> zag(p);
> }
> }
> }
> }
> void showTree(Tnode *x,int delta=0,int rev=0){
> if (x==no)return;
> rev^=((x->mark&NODEREVERSE)&&1);
> if (rev){
> showTree(x->rc,x->delta+delta,rev);
> if (x->mark&NODEEXIT)printf("%d ",x->v+delta);
> showTree(x->lc,x->delta+delta,rev);
> }else{
> showTree(x->lc,x->delta+delta,rev);
> if (x->mark&NODEEXIT)printf("%d ",x->v+delta);
> showTree(x->rc,x->delta+delta,rev);
> }
> }
> void outTree(Tnode *x,int dep=0){
> for (int i=0;i<dep;i++)putchar(' ');
> if (x==no){
> puts("*");
> return;
> }
> if (x->fa!=no && x->fa->rc!=x && x->fa->lc!=x)putchar(2);
> printf("v=%d m=%d sz=%d ma=%d de=%d\n",x->v,x->m,x->sz,int(x->mark),x->delta);
> outTree(x->lc,dep+1);
> outTree(x->rc,dep+1);
> }
> void Ins(int key,int v){
> Tnode *p,*q;
> if (root==no){
> root=getNew();
> root->v=root->m=v;
> root->fa=root->lc=root->rc=no;
> return;
> }
> p=root;
> while (1){
> NoMark(p);
> if (p->lc->sz==key && !(p->mark&NODEEXIT)){
> p->mark|=NODEEXIT;
> p->v=v;
> break;
> }
> if (p->lc->sz>=key){
> if (p->lc==no){
> p->lc=getNew();
> p->lc->v=p->lc->m=v;
> p->lc->fa=p;p->lc->lc=p->lc->rc=no;
> p=p->lc;
> break;
> }
> p=p->lc;
> }else{
> key-=p->lc->sz+((p->mark&NODEEXIT)&&1);
> if (p->rc==no){
> p->rc=getNew();
> p->rc->v=p->rc->m=v;
> p->rc->fa=p;p->rc->lc=p->rc->rc=no;
> p=p->rc;
> break;
> }
> p=p->rc;
> }
> }
> for (q=p;q!=no;q=q->fa)Correct(q);
> Splay(p);
> }
> Tnode* Find(int key){
> Tnode *p;
> p=root;
> while (1){
> NoMark(p);
> if (p->lc->sz==key && (p->mark&NODEEXIT))break;
> if (p->lc->sz>key)p=p->lc;
> else{
> key-=p->lc->sz+((p->mark&NODEEXIT)&&1);
> p=p->rc;
> }
> }
> return p;
> }
> void Del(int key){
> Tnode *p,*q;
> p=Find(key);
> p->mark&=~NODEEXIT;
> q=p;
> while (q!=no){
> Correct(q);
> q=q->fa;
> }
> Splay(p);
> }
> Tnode* cutTree(int x,int y){
> Tnode *px,*py;
> if (x && y<root->sz-1){
> py=Find(y+1);Splay(py);
> px=Find(x-1);Splay(px);
> root=px->rc;
> Splay(py);
> root=px;
> return py->lc;
> }else if (x==0 && y<root->sz-1){
> py=Find(y+1);
> Splay(py);
> return py->lc;
> }else if (x){
> px=Find(x-1);
> Splay(px);
> return px->rc;
> }else return root;
> }
> void Add(int x,int y,int v){
> if (x>y)return;
> Tnode *p,*q;
> if (x==y){
> p=Find(x);Splay(p);
> p->v+=v;Correct(p);
> return;
> }
> p=cutTree(x,y);
> p->v+=v;p->delta+=v;
> for (q=p;q!=no;q=q->fa)Correct(q);
> }
> void Reverse(int x,int y){
> Tnode *p;
> if (x>=y)return;
> p=cutTree(x,y);
> p->mark^=NODEREVERSE;
> Splay(p);
> }
> void Revolve(int x,int y,int d){
> if (x>=y)return;
> d%=(y-x+1);
> if (!d)return;
> Tnode *p,*oldroot,*t,*l;
> p=cutTree(x,y);
> oldroot=root;
> root=p;
> t=Find(0);Splay(t);
> if (y==x+d){
> l=t->lc;t->lc=t->rc;t->rc=l;
> root=oldroot;
> return;
> }
> l=Find(y-x-d);
> root=t->rc;
> Splay(l);
> t->lc=l->rc;
> l->rc->fa=t;
> l->rc=no;
> Correct(l);
> Correct(t);
> root=oldroot;
> }
> int getMin(int x,int y){
> Tnode *p;
> if (x>y)return BigNum;
> if (x==y){
> p=Find(x);Splay(p);
> return p->v;
> }
> p=cutTree(x,y);
> return p->m;
> }
> int res[100000],rc;
> int main()
> {
> no=&_no;no->mark=0;no->m=no->v=BigNum;no->sz=no->delta=0;no->fa=no->lc=no->rc=no;
> tpc=0;
> int N,x,y,d,M;
> char cmd[20];
> scanf("%d",&N);
> root=no;
> for (int i=0;i<N;i++){
> scanf("%d",&x);
> Ins(i,x);
> }
> scanf("%d",&M);
> rc=0;
> for (int i=0;i<M;i++){
> scanf("%s",cmd);
> switch (cmd[0]){
> case 'A':
> scanf("%d %d %d",&x,&y,&d);
> Add(x-1,y-1,d);
> break;
> case 'I':
> scanf("%d %d",&x,&d);
> Ins(x,d);
> break;
> case 'D':
> scanf("%d",&x);
> Del(x-1);
> break;
> case 'M':
> scanf("%d %d",&x,&y);
> res[rc++]=getMin(x-1,y-1);
> break;
> case 'R':
> if (cmd[3]=='E'){
> scanf("%d %d",&x,&y);
> Reverse(x-1,y-1);
> }else if (cmd[3]=='O'){
> scanf("%d %d %d",&x,&y,&d);
> Revolve(x-1,y-1,d);
> }
> break;
> }
> }
> for (int i=0;i<rc;i++)printf("%d\n",res[i]);
> getchar();getchar();
> return 0;
> }
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