Cod sursa(job #1806842)

Utilizator B_RazvanBaboiu Razvan B_Razvan Data 15 noiembrie 2016 18:45:00
Problema Secventa Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.45 kb
#include <iostream>
#include <cstdio>
#include <deque>
#include <cstring>
#include <fstream>
#define INF 0x3f3f3f
#define NR 500005

using namespace std;

ifstream f("secventa.in");

int k, n, maxim=-1*INF, poz, a[NR];
deque <int> q;
char vec[NR*7];

void parsare()
{
    gets(vec);
    int lungime=strlen(vec);
    int poz=1;
    vec[lungime]=' ';
    for(int i=0; i<lungime; )
    {
        int semn=1;
        if(vec[i]=='-')
        {
            semn=-1;
            i++;
        }
        int j;
        for(j=i; vec[j]!=' '; ++j)
            a[poz]=a[poz*10]+(vec[j]-'0');
        a[poz]*=semn;
        poz++;
        i=j+1;
    }
}

void citire()
{
    scanf("%d%d\n", &n, &k);
    parsare();
}

void stergereElemente(int x)
{
    while(!q.empty() && a[x]<a[q.back()])
        q.pop_back();
}

void rezolvare()
{
    for(int i=1; i<=k-1; ++i)
    {
        stergereElemente(i);
        q.push_back(i);
    }
    for(int i=k; i<=n; ++i)
    {
        stergereElemente(i);
        q.push_back(i);
        if(q.back()-q.front()>k-1)
            {
                q.pop_front();
            }
        if(a[q.front()]>maxim)
        {
            maxim=a[q.front()];
            poz=q.back();
        }
    }
}

int main()
{
    freopen("secventa.in", "r", stdin);
    freopen("secventa.out", "w", stdout);
    citire();
    rezolvare();
    printf("%d %d %d", poz-k+1, poz, maxim);
    return 0;
}