mirror of
https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
b39288d6ef
5400-5504(END by now)
193 lines
4.2 KiB
C++
193 lines
4.2 KiB
C++
#include <cstdio>
|
|
#include <cmath>
|
|
#include <cstring>
|
|
#include <string>
|
|
#include <cstdlib>
|
|
#include <climits>
|
|
#include <ctype.h>
|
|
#include <queue>
|
|
#include <stack>
|
|
#include <vector>
|
|
#include <utility>
|
|
#include <deque>
|
|
#include <set>
|
|
#include <map>
|
|
#include <iostream>
|
|
#include <algorithm>
|
|
using namespace std;
|
|
const double eps = 1e-9;
|
|
const double PI = acos(-1.00);
|
|
const double e = exp(1.0);
|
|
#define INF 0x3f3f3f3f
|
|
#define N 600010
|
|
#define M 100010
|
|
struct treap
|
|
{
|
|
int key,wht,count,sz,ch[2];
|
|
} tp[N*15];
|
|
int tree[N<<1];
|
|
int nodecount,root;
|
|
int IDX(int l,int r)
|
|
{
|
|
return l+r | l!=r;
|
|
}
|
|
void init()
|
|
{
|
|
tp[0].sz=0;
|
|
tp[0].wht=-INF;
|
|
nodecount=0;
|
|
root=0;
|
|
}
|
|
void update(int x)
|
|
{
|
|
tp[x].sz=tp[tp[x].ch[0]].sz+tp[x].count+tp[tp[x].ch[1]].sz;
|
|
}
|
|
void rotate(int &x,int t)
|
|
{
|
|
int y=tp[x].ch[t];
|
|
tp[x].ch[t]=tp[y].ch[!t];
|
|
tp[y].ch[!t]=x;
|
|
update(x);
|
|
update(y);
|
|
x=y;
|
|
}
|
|
void insert(int &x,int t)
|
|
{
|
|
if(! x)
|
|
{
|
|
x=++nodecount;
|
|
tp[x].key=t;
|
|
tp[x].wht=rand();
|
|
tp[x].count=1;
|
|
tp[x].ch[0]=tp[x].ch[1]=0;
|
|
}
|
|
else if(tp[x].key==t) tp[x].count++;
|
|
else
|
|
{
|
|
int k=tp[x].key<t;
|
|
insert(tp[x].ch[k],t);
|
|
if(tp[x].wht<tp[tp[x].ch[k]].wht) rotate(x,k);
|
|
}
|
|
update(x);
|
|
}
|
|
void erase(int &x,int t)
|
|
{
|
|
if(tp[x].key==t)
|
|
{
|
|
if(tp[x].count==1)
|
|
{
|
|
if(! tp[x].ch[0] && ! tp[x].ch[1])
|
|
{
|
|
x=0;
|
|
return;
|
|
}
|
|
rotate(x,tp[tp[x].ch[0]].wht<tp[tp[x].ch[1]].wht);
|
|
erase(x,t);
|
|
}
|
|
else tp[x].count--;
|
|
}
|
|
else erase(tp[x].ch[tp[x].key<t],t);
|
|
update(x);
|
|
}
|
|
int select(int x,int t)
|
|
{
|
|
if(! x) return 0;
|
|
if(tp[x].key>t) return select(tp[x].ch[0],t);
|
|
return tp[x].count+tp[tp[x].ch[0]].sz+select(tp[x].ch[1],t);
|
|
}
|
|
int a[N],b[N],ord[M][5],lb;
|
|
int n,m,tt;
|
|
int search(int x)
|
|
{
|
|
int l=1,r=b[0],mid;
|
|
while (l<=r)
|
|
{
|
|
mid=(l+r)>>1;
|
|
if(b[mid]==x) return mid;
|
|
if(b[mid]<x) l=mid+1;
|
|
else r=mid-1;
|
|
}
|
|
}
|
|
void treeinsert(int l,int r,int i,int x)
|
|
{
|
|
insert(tree[IDX(l,r)],x);
|
|
if(l==r) return;
|
|
int m=(l+r)>>1;
|
|
if(i<=m) treeinsert(l,m,i,x);
|
|
else treeinsert(m+1,r,i,x);
|
|
}
|
|
void treedel(int l,int r,int i,int x)
|
|
{
|
|
erase(tree[IDX(l,r)],x);
|
|
if(l==r) return;
|
|
int m=(l+r)>>1;
|
|
if(i<=m) treedel(l,m,i,x);
|
|
else treedel(m+1,r,i,x);
|
|
}
|
|
int query(int l,int r,int x,int y,int k)
|
|
{
|
|
if(l==r) return l;
|
|
int m=(l+r)>>1;
|
|
int ans=select(tree[IDX(l,m)],y)-select(tree[IDX(l,m)],x);
|
|
if(ans>=k) return query(l,m,x,y,k);
|
|
return query(m+1,r,x,y,k-ans);
|
|
}
|
|
int main ()
|
|
{
|
|
while (~scanf("%d",&n))
|
|
{
|
|
b[0]=1;
|
|
lb=0;
|
|
memset(tree,0,sizeof(tree));
|
|
init();
|
|
for(int i=1; i<=n; i++)
|
|
{
|
|
scanf("%d",&a[i]);
|
|
b[++lb]=a[i];
|
|
}
|
|
scanf("%d",&m);
|
|
for(int i=1; i<=m; i++)
|
|
{
|
|
int op;
|
|
int x,y,c;
|
|
scanf("%d",&op);
|
|
if(op == 2)
|
|
{
|
|
scanf("%d %d %d",&x,&y,&c);
|
|
ord[i][1]=1;
|
|
ord[i][2]=x;
|
|
ord[i][3]=y;
|
|
ord[i][4]=c;
|
|
}
|
|
else
|
|
{
|
|
scanf("%d %d",&x,&y);
|
|
ord[i][1]=2;
|
|
ord[i][2]=x;
|
|
ord[i][3]=y;
|
|
b[++lb]=y;
|
|
}
|
|
}
|
|
sort(b+1,b+1+lb);
|
|
for(int i=1; i<=lb; i++)
|
|
if(b[i]!=b[b[0]]) b[++b[0]]=b[i];
|
|
for(int i=1; i<=n; i++)
|
|
{
|
|
a[i]=search(a[i]);
|
|
treeinsert(1,b[0],a[i],i);
|
|
}
|
|
for(int i=1; i<=m; i++)
|
|
{
|
|
if(ord[i][1]==1)
|
|
printf("%d\n",b[query(1,b[0],ord[i][2]-1,ord[i][3],ord[i][4])]);
|
|
else
|
|
{
|
|
treedel(1,b[0],a[ord[i][2]],ord[i][2]);
|
|
a[ord[i][2]]=search(ord[i][3]);
|
|
treeinsert(1,b[0],a[ord[i][2]],ord[i][2]);
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|