Cod sursa(job #2031909)

Utilizator TudoseSanzianaTudose Sanziana TudoseSanziana Data 3 octombrie 2017 23:36:13
Problema Secventa Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.12 kb
#include <bits/stdc++.h>
using namespace std;

ifstream in("secventa.in");
ofstream out("secventa.out");

int n,k;
int st,dr,ans;
int v[500005],dq[500005];

string str;
void parsare();

int main()
{
    in>>n>>k; in.ignore();
    getline(in,str);

    parsare();

    dq[1]=1;

    ans=-2e9;
    int front=1,back=1;
    for(int i=2; i<=n; i++)
    {
        while(front<=back && i-dq[front]+1>k) front++;

        while(front<=back && v[dq[back]]>=v[i]) back--;

        dq[++back]=i;

        if(i>=k && v[dq[front]]>ans)
        {
            ans=v[dq[front]];
            st=i-k+1;
            dr=i;
        }
    }

    out<<st<<' '<<dr<<' '<<ans<<'\n';

    return 0;
}

void parsare()
{
    int nr=0,len=0;
    char semn='+';

    for(int i=0; i<str.size(); i++)
    {
        if(str[i]==' ')
        {
            if(semn=='-') nr=-nr;
            v[++len]=nr;
            nr=0; semn='+';
            continue;
        }

        if(str[i]=='-')
        {
            semn=str[i];
            continue;
        }

        nr=nr*10+str[i]-'0';
    }
    v[++len]=nr;
}