Submission #469025

#	Time	Username	Problem	Language	Result	Execution time	Memory
469025		stefantaga	Bubble Sort 2 (JOI18_bubblesort2)	C++14	100 / 100	4296 ms	124728 KiB

bubblesort2

#include "bubblesort2.h"
#define INF 10000000000000
#include <cstdio>
#include <cstdlib>
#include <vector>
#include <bits/stdc++.h>

using namespace std;
int nr,n,i,v[500005];
map <pair <int,int> ,int> m;
long long arb[4000005],lazy[4000005];
void propaga(int st,int dr,int nod)
{
    if (st==dr)
    {
        return;
    }
    if (lazy[nod]==0)
    {
        return;
    }
    lazy[2*nod]+=lazy[nod];
    lazy[2*nod+1]+=lazy[nod];
    arb[2*nod]+=lazy[nod];
    arb[2*nod+1]+=lazy[nod];
    lazy[nod]=0;
    return;
}
void update(int st,int dr,int nod,int ua,int ub,long long val)
{
    if (ua<=st&&dr<=ub)
    {
        arb[nod]+=val;
        lazy[nod]+=val;
        return ;
    }
    propaga(st,dr,nod);
    int mij=(st+dr)/2;
    if (ua<=mij)
    {
        update(st,mij,2*nod,ua,ub,val);
    }
    if (mij<ub)
    {
        update(mij+1,dr,2*nod+1,ua,ub,val);
    }
    arb[nod]=max(arb[2*nod],arb[2*nod+1]);
}
std::vector<int> countScans(std::vector<int> A,std::vector<int> X,std::vector<int> val){
	int q=X.size();
	n=A.size();
	for (i=0;i<n;i++)
    {
        v[i+1]=A[i];
    }
    for (i=1;i<=n;i++)
    {
        m[{v[i],i}]=1;
    }
    for (i=0;i<q;i++)
    {
        m[{val[i],X[i]+1}]=1;
    }
    nr=0;
    for (auto ind: m)
    {
        nr++;
        m[ind.first]=nr;
    }
    update(1,nr,1,1,nr,-INF);
    for (i=1;i<=n;i++)
    {
        v[i]=m[{v[i],i}];
        update(1,nr,1,v[i],v[i],INF+i);
        update(1,nr,1,v[i]+1,nr,-1);
    }
    int j;
    vector <int> sol;
    for (i=0;i<q;i++)
    {
        int poz=X[i]+1;
        update(1,nr,1,v[poz],v[poz],-INF-poz);
        update(1,nr,1,v[poz]+1,nr,1);
        v[poz]=m[{val[i],poz}];
        update(1,nr,1,v[poz],v[poz],INF+poz);
        update(1,nr,1,v[poz]+1,nr,-1);
        sol.push_back(arb[1]-1);
    }
    return sol;
}


















/*int readInt(){
	int i;
	if(scanf("%d",&i)!=1){
		fprintf(stderr,"Error while reading input\n");
		exit(1);
	}
	return i;
}

int main(){
	int N,Q;
	N=readInt();
	Q=readInt();

	std::vector<int> A(N);
	for(int i=0;i<N;i++)
		A[i]=readInt();

	std::vector<int> X(Q),V(Q);
	for(int j=0;j<Q;j++){
		X[j]=readInt();
		V[j]=readInt();
	}

	std::vector<int> res=countScans(A,X,V);

	for(int j=0;j<int(res.size());j++)
		printf("%d\n",res[j]);
}*/

Compilation message (stderr)

bubblesort2.cpp: In function 'std::vector<int> countScans(std::vector<int>, std::vector<int>, std::vector<int>)':
bubblesort2.cpp:77:9: warning: unused variable 'j' [-Wunused-variable]
   77 |     int j;
      |         ^

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