Cod sursa(job #2033876)

Utilizator maria_sinteaMaria Sintea maria_sintea Data 7 octombrie 2017 11:28:59
Problema Secventa Scor 60
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.22 kb
#include <cstdio>
#include <deque>
#define N 500005
using namespace std;

int n, k, a[N], nr, curs;
int maxi=-930000, psm;
char buff[N];
deque <int> d;

void adv()
{
    curs++;
    if(curs>=N)
    {
        fread(buff, 1, N, stdin);
        curs=0;
    }
}

int getInt()
{
    int nr=0, semn=1;
    while(!(buff[curs]>='0' && buff[curs]<='9'))
    {
        if(buff[curs]=='-')
            semn=-1;
        adv();
    }
    while(buff[curs]>='0' && buff[curs]<='9')
    {
        nr=nr*10+buff[curs]-'0';
        adv();
    }
    return nr*semn;
}

int main()
{
    freopen("secventa.in","r",stdin);
    freopen("secventa.out","w",stdout);

    scanf("%d %d\n",&n, &k);
    fread(buff, 1, N, stdin);
    for(int i=0;i<n;i++)
        a[i]=getInt();

    d.push_back(0);
    for(int i=1;i<n;i++)
    {
        while(!d.empty() && a[d.back()]>=a[i])
            d.pop_back();
        d.push_back(i);
        if(i>=k)
        {
            if(d.front()==i-k)
                d.pop_front();
            if(a[d.front()]>maxi)
            {
                maxi=a[d.front()];
                psm=i+1;
            }
        }
    }

    printf("%d %d %d", psm-k+1, psm, maxi);
    return 0;
}