Cod sursa(job #2269875)

Utilizator Roby54151Robert Cojocariu Roby54151 Data 26 octombrie 2018 18:08:13
Problema Secventa Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.22 kb
#include <fstream>
#include <deque>
#include <algorithm>
#include <climits>
#include <cstring>
using namespace std;
ifstream f("secventa.in");
ofstream g("secventa.out");
long long n, k, poz1=-1, poz2=-1, maxim=INT_MIN, a[5000001], j=1;
char s[50000001];
deque <long long> q;
int main()
{
    f>>n>>k;
    f.get();
    f.getline(s, 50000001);
    long lung=strlen(s);
    for(int i=0; i<lung; i++)
    {
        int nr=0;
        if(s[i]=='-')
        {
            i++;
            while(s[i]>='0' && s[i]<='9')
            {
                nr=nr*10-(s[i]-'0');
                i++;
            }
            a[j++]=nr;
        }
        else
        {
            while(s[i]>='0' && s[i]<='9')
            {
                nr=nr*10+(s[i]-'0');
                i++;
            }
            a[j++]=nr;
        }
    }
    for(int i=1; i<=n; i++)
    {
        while(!q.empty() && a[i]<=a[q.back()])
            q.pop_back();
        q.push_back(i);
		if(i-q.front()==k)
            q.pop_front();
        if(i>=k && a[q.front()]>maxim)
        {
            maxim=a[q.front()];
            poz1=i-k+1;
            poz2=i;
        }
    }
    g<<poz1<<" "<<poz2<<" "<<maxim;
    return 0;
}