Cod sursa(job #2517239)

Utilizator tomaionutIDorando tomaionut Data 3 ianuarie 2020 10:55:29
Problema Secventa Scor 0
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.16 kb
#include <bits/stdc++.h>

using namespace std;
ifstream fin("secventa.in");
ofstream fout("secventa.out");
deque <int> d;
char s[5000000];
int a[500005];
int n,k;
int main()
{
    int i,semn=1,x=0,cnt=0,ma=0,p;
    fin >> n >> k;
    fin.get();
    fin.getline(s,5000000);
    for (i=0; s[i]; )
    {
        if (s[i]==' ') i++;
        else if (s[i]=='-') {semn=-1;i++;}
        else if (isdigit(s[i]))
        {
            while (isdigit(s[i]))
            {x=x*10+(s[i]-'0'); i++;}
            x*=semn;
            a[++cnt]=x;
            x=0;
            semn=1;
        }
    }
    for (i=1; i<=k; i++)
    {
         while (!d.empty() and a[d.back()]>=a[i])
            d.pop_back();
        d.push_back(i);
        if (d.front()<=i-k) d.pop_front();
    }
    ma=d.front();
    p=k;
    for (i=1; i<=n; i++)
    {
        while (!d.empty() and a[d.back()]>=a[i])
            d.pop_back();
        d.push_back(i);
        if (d.front()<=i-k) d.pop_front();
        if (ma<a[d.front()] and i>=k)
        {
            ma=a[d.front()];
            p=i;
        }
    }
    fout << p << " " << p-k+1 << " " << ma;

    return 0;
}