Cod sursa(job #2036317)

Utilizator segal_ftw3Luncanu Sergiu segal_ftw3 Data 10 octombrie 2017 16:33:35
Problema Secventa Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.94 kb
#include <fstream>
#include <deque>
#define Nmax 500001
using namespace std;
ifstream f("secventa.in"); ofstream g("secventa.out");
int n,k,v[Nmax];
deque <int> D;
char s[Nmax*7];
int main()
{   f>>n>>k;
    f.get();
    f.getline(s, sizeof(s));
    int i=0;
    for(int l=1; l<=n; l++)
    {   int semn=1;
        while(s[i]!=' ' && s[i])
        {
            if(s[i]=='-')
            {
                semn=-1;
                i++;
            }
            v[l]=v[l]*10+s[i]-'0';
            i++;
        }
        i++;
        v[l]*=semn;
    }
    int st,dr,rez=-Nmax;
    D.push_back(1);
    for(int i=2; i<=n; i++)
    {   while(!D.empty() && v[i]<=v[D.back()]) D.pop_back();
        D.push_back(i);
        while(!D.empty() && i-D.front()>=k) D.pop_front();
        if(!D.empty() && i>=k && v[D.front()]>rez)
        {   rez=v[D.front()]; st=i-k+1; dr=i; }
    }
    g<<st<<' '<<dr<<' '<<rez; g.close(); return 0;
}