Submission #205902

#	Time	Username	Problem	Language	Result	Execution time	Memory
205902		GioChkhaidze	Bubble Sort 2 (JOI18_bubblesort2)	C++14	0 / 100	10 ms	1336 KiB

bubblesort2

#include <bits/stdc++.h>
#include "bubblesort2.h"
#define Tree int h,int l,int r
#define Left (h<<1),l,(l+r)>>1
#define Right ((h<<1)|1),((l+r)>>1)+1,r
#define F first
#define S second
using namespace std;
const int N=10003;
int n,q,S,L,R,dl,idx,val,Xx,Yy,a[N],pos[N],x[N],G[2*N],inf=-1e9;
vector < int > answer;  
vector < pair < pair < int , int > , bool > > s;
typedef struct { int x; int add; } res;
res v[8*N];

inline void Shift(Tree) {
	if (!v[h].add) return ;
	v[h].x+=v[h].add;
	if (l!=r) {
		v[(h<<1)].add+=v[h].add;
		v[((h<<1)|1)].add+=v[h].add;
	}
	v[h].add=0;
}

void Updlr(Tree) {
	Shift(h,l,r);
	if (R<l || r<L) return ;
	if (L<=l && r<=R) { v[h].add+=dl; Shift(h,l,r); return ; }
	Updlr(Left),Updlr(Right);
	v[h].x=max(v[(h<<1)].x,v[((h<<1)|1)].x);
}

void Upd(Tree) {
	Shift(h,l,r);
	if (r<idx || idx<l) return ;
	if (l==idx && r==idx) { v[h].x=val; return ; }
	Upd(Left),Upd(Right);
	v[h].x=max(v[(h<<1)].x,v[((h<<1)|1)].x);
}

void Up(int x,int dl) { while (x<=S) { G[x]+=dl; x+=(x & -x); } }
int Ge(int x) { int res=0; while (x>0) { res+=G[x]; x-=(x & -x); } return res; }

std::vector<int> countScans(std::vector<int> A,std::vector<int> X,std::vector<int> V){
	n=A.size(),q=X.size();
	
	for (int i=1; i<=n; i++) 
		a[i]=A[i-1],s.push_back({{a[i],n-i},0});
	for (int i=1; i<=q; i++) 
		pos[i]=X[i-1]+1,x[i]=V[i-1],s.push_back({{x[i],n-pos[i]},1});
	
	sort(s.begin(),s.end()),S=s.size();
	
	for (int i=0; i<s.size(); i++) 
		if (!s[i].S) 
			a[-(s[i].F.S-n)]=i+1;
				else
			x[-(s[i].F.S-n)]=i+1;
		
	for (int i=1; i<=n; i++) Up(a[i],1);
	for (int i=1; i<=4*S; i++) v[i].x=inf;
	for (int i=1; i<=n; i++) 
		idx=a[i],val=i-Ge(a[i]),Upd(1,1,S);

	for (int i=1; i<=q; i++) {
		Xx=a[pos[i]],Yy=x[i];
		Up(a[pos[i]],-1),Up(x[i],1);
		
		for (int i=1; i<=q; i++)
		answer.push_back(1);
		return answer;
		
		if (Xx<=Yy) {
			idx=Xx,val=inf,Upd(1,1,S);
			L=Xx+1,R=Yy-1,dl=1;
			if (L<=R) Updlr(1,1,S);
			idx=Yy,val=pos[i]-Ge(x[i]),Upd(1,1,S);
		}
			else {
			idx=Xx,val=inf,Upd(1,1,S);
			L=Yy+1,R=Xx-1,dl=-1;
			if (L<=R) Updlr(1,1,S);
			idx=Yy,val=pos[i]-Ge(x[i]),Upd(1,1,S);
		}
		
		a[pos[i]]=x[i];
		answer.push_back(v[1].x);
	}

	return answer;
}

Compilation message (stderr)

bubblesort2.cpp: In function 'std::vector<int> countScans(std::vector<int>, std::vector<int>, std::vector<int>)':
bubblesort2.cpp:55:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<s.size(); i++) 
                ~^~~~~~~~~

• Subtask 1: 0 / 17
• Subtask 2: 0 / 21
• Subtask 3: 0 / 22
• Subtask 4: 0 / 40