Cod sursa(job #2701902)

Utilizator tomaionutIDorando tomaionut Data 2 februarie 2021 09:34:11
Problema Secventa Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.17 kb
#include <bits/stdc++.h>
using namespace std;
ifstream fin("secventa.in");
ofstream fout("secventa.out");
int n, k, a[500005];
char s[4000005];
deque <int> d;
int main()
{       
    int i, semn = 0, x, cnt = 0, ma = INT_MIN, p;
    fin >> n >> k;
    fin.get();
    fin.getline(s, 4000000);
    for (i = 0; s[i];)
    {
        if (s[i] == '-')
        {
            semn = 1;
            i++;
        }
        else if (s[i] == ' ')
        {
            i++;
        }
        else if (isdigit(s[i]))
        {
            while (isdigit(s[i]))
            {
                x = x * 10 + s[i] - '0';
                i++;
            }
            if (semn == 1) x *= -1;
            a[++cnt] = x;
            semn = 0;
            x = 0;
        }

    }
    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 (a[d.front()] > ma and i >= k)
        {
            ma = a[d.front()];
            p = i;
        }

    }
    fout << p - k + 1 << " " << p << " " << ma;
    return 0;
}