Cod sursa(job #2033846)

Utilizator dragomirmanuelDragomir Manuel dragomirmanuel Data 7 octombrie 2017 11:14:13
Problema Secventa Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.45 kb
#include <iostream>
#include <cstdio>
#include <deque>

#define DIM 1000000

using namespace std;

const int NMax = 500005;
int N, K;
deque < int > dq;
int v[NMax];
/*
push_front
pop_front
push_back
pop_back
*/

char buff[NMax * 8];
int curs;

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

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

void Read()
{
    scanf("%d %d", &N, &K);
    fread(buff, 1, DIM, stdin);

    for(int i=1; i<=N; ++i)
    {
        v[i]=getInt();
    }
}

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

    Read();

    dq.push_back(1);
    int maxi = -30005;
    int ind_min = 0;

    for(int i=2; i<=N; ++i)
    {
        if(dq.front() == i-K)
            dq.pop_front();

        while(!dq.empty() && v[dq.back()] > v[i])
        {
            dq.pop_back();
        }

        dq.push_back(i);

        if(i>=K)
        {
             int val = v[dq.front()];
             if(val > maxi)
                {maxi = val;
                 ind_min=i;
                }
        }
    }

    cout << ind_min - K +1 << " " << ind_min << " " << maxi;

    return 0;
}