Cod sursa(job #2618883)

Utilizator iulianarsenoiuArsenoiu Iulian iulianarsenoiu Data 26 mai 2020 14:51:40
Problema Secventa Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.42 kb
#include <iostream>
#include <cstdio>
#include <climits>
#include <queue>

using namespace std;
priority_queue <int,vector<int>,greater<int>> h;
int n,k,v[500005];
int sel[300005];
const int bsize = (1<<16)+1;
char buffer[bsize];
int p;
int ReadInt()
{
    int nr=0;
    while(!isdigit(buffer[p]))
    {
        if(p==bsize-1)
        {
            p=0;
            fread(buffer,1,bsize,stdin);
        }
        else
            p++;
    }
    int rev=1;
    if(buffer[p-1]=='-')
        rev=-1;
    while(isdigit(buffer[p]))
    {
        nr=nr*10+buffer[p]-'0';
        if(p==bsize-1)
        {
            p=0;
            fread(buffer,1,bsize,stdin);
        }
        else
            p++;
    }
    return nr*rev;
}
int main()
{
    freopen("secventa.in","r",stdin);
    freopen("secventa.out","w",stdout);
    n=ReadInt();
    k=ReadInt();
    for(int i=1;i<=n;i++)
    {
        v[i]=ReadInt();
    }
    for(int i=1;i<k;i++)
    {
        h.push(v[i]);
        sel[v[i]+30000]++;
    }
    int poz=0,Max=-INT_MAX;
    for(int i=k;i<=n;i++)
    {
        h.push(v[i]);
        sel[v[i]+30000]++;
        while(!sel[h.top()+30000])
        {
            h.pop();
        }
        int nr=h.top();
        if(nr>Max)
        {
            Max=nr;
            poz=i;
        }
        sel[v[i-k+1]+30000]--;
    }
    cout<<poz-k+1<<' '<<poz<<' '<<Max<<'\n';
    return 0;
}