Cod sursa(job #2702012)

Utilizator robertanechita1Roberta Nechita robertanechita1 Data 2 februarie 2021 16:08:42
Problema Secventa Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.09 kb
#include <bits/stdc++.h>

using namespace std;

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

int n, k, a[500005], M;
char s[3800000];
deque<int>q;

int main()
{
    int i, p, j=0, x, semn;
    fin >> n >> k;
    fin.get();
    fin.getline(s, 3800000);
    for(i=0; s[i]!=0;)
    {
        x=0;
        if(s[i]==' ') i++;
        else if(s[i]=='-')
       {
           semn=1;
           i++;
       }
        else
       {
           while('0'<=s[i]&&s[i]<='9')
           {
               x=x*10+s[i]-'0';
               i++;
           }
           if(semn==1)
           {
               semn=0;
               a[++j]=-x;
           }
           else a[++j]=x;
       }
    }
    p=k; M=-3e5;
    for(i=1; i<=n; i++)
    {
        x=a[i];
        while(!q.empty()&&a[q.back()]>=x)
            q.pop_back();
        q.push_back(i);
        if(i-k==q.front()) q.pop_front();
        if(a[q.front()]>M&&i>=k)
        {
            M=a[q.front()];
            p=i;
        }
    }
    fout << p-k+1 << " " << p << " " << M;
    return 0;
}