Cod sursa(job #1769560)

Utilizator Mircea_DonciuDonciu Mircea Mircea_Donciu Data 2 octombrie 2016 19:03:48
Problema Secventa Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.8 kb
#include <cstdio>

using namespace std;
int n,i,v[500005],k,stv[500005],st[500005],dr[500005],m,in,sf,max1;
#define DIM 10000
char buff[DIM];
int poz=0;

void citeste(int &numar)
{
     numar = 0;
     char semn='+';
     while (buff[poz] < '0' || buff[poz] > '9')
     {
          semn = buff[poz];
          if (++poz == DIM)
               fread(buff,1,DIM,stdin),poz=0;
     }
     while ('0'<=buff[poz] && buff[poz]<='9')
     {
          numar = numar*10 + buff[poz] - '0';
          if (++poz == DIM)
               fread(buff,1,DIM,stdin),poz=0;
     }
     if (semn == '-')
          numar = -numar;
}
int main()
{
    freopen("secventa.in","r",stdin);
    freopen("secventa.out","w",stdout);
    citeste(n);
    citeste(k);
    for(i=1;i<=n;i++)
        citeste(v[i]);
    stv[1]=1;
    m=1;
    st[1]=1;
    max1=-999999;
    for(i=2;i<=n;i++)
    {
        if(v[i]>v[stv[m]])
        {
            m++;
            stv[m]=i;
            st[i]=i;
        }
        else
           {

            while(v[i]<=v[stv[m]]&&m>=1)
            m--;
            m++;
            st[i]=st[stv[m]];
            stv[m]=i;
           }
    }
    stv[1]=n;
    m=1;
    dr[n]=n;
    for(i=n-1;i>=1;i--)
    {
         if(v[i]>v[stv[m]])
        {
            m++;
            stv[m]=i;
            dr[i]=i;
        }
         else
        {
                if(v[stv[m]]>=v[i])
                {
                    while(v[stv[m]]>=v[i]&&m>=1)
                    m--;
                    m++;
                }
                  dr[i]=dr[stv[m]];
                  stv[m]=i;
        }
    }
    for(i=1;i<=n;i++)
      if(v[i]>max1&&dr[i]-st[i]+1>=k)
      {
          in=st[i];
          max1=v[i];
      }
       printf("%d %d %d",in,in+k-1,max1);
}