Cod sursa(job #1901949)

Utilizator GeanaVladGeana Vlad GeanaVlad Data 4 martie 2017 12:10:55
Problema Secventa 2 Scor 60
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.08 kb
#include <iostream>
#include<fstream>
#define N 500010
using namespace std;
ifstream f("secv2.in");
ofstream g("secv2.out");
int n,k,pmax,mx=-150000000,v[N],s[N],i;
int Deque[N],Front,Back;
int main()
{
    f>>n>>k;
    for(i=1; i<=n; i++)
    {
        f>>v[i];
        s[i]=s[i-1]+v[i];
    }
    Front=1;
    Back=0;
    for(i=1; i<=n; i++)
    {
        if(Deque[Back]-Deque[Front]+1>=k)
            if(s[Deque[Back]]-s[Deque[Front]-1] > mx)
            {
                mx=s[Deque[Back]]-s[Deque[Front]-1];
                pmax=Deque[Back];
            }
        Deque[++Back]=i;
        if(Deque[Back]-Deque[Front]+1>=k)
            if(s[Deque[Back]]-s[Deque[Front]-1] > mx)
            {
                mx=s[Deque[Back]]-s[Deque[Front]-1];
                pmax=Deque[Back];
            }
        while(s[Deque[Back]]-s[Deque[Front]-1]<0 && Back-Front+1>=k)
            Front++;
    }
    int mx1=mx;
    int cnt=1,j;
    for(i=pmax;i>0;i--,cnt++)
    {
        mx-=v[i];
        if(!mx && cnt>=k)
            j=i;
    }
    g<<j<<' '<<pmax<<' '<<mx1;

}