Cod sursa(job #2909773)

Utilizator STEFANBUSOIStefan Busoi STEFANBUSOI Data 15 iunie 2022 17:44:51
Problema Secventa Scor 40
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.94 kb
#include <iostream>
#include <fstream>
#include <math.h>
using namespace std;
ifstream f("secventa.in");
ofstream g("secventa.out");
int mprec[500005][23];
 int n,k,v[500000];
 int l2k;
void precalc(int *v,int n)
{
    int p2=2,logp2=1;
    for(int i=0;i<n;i++)
        mprec[i][0]=v[i];
    while(p2<=n){
        for(int i=0;i<n-p2+1;i++)
            {
                mprec[i][logp2]=min(mprec[i][logp2-1],mprec[i+p2/2][logp2-1]);
            }
        logp2++;
        p2=p2*2;
    }
}
int vmin(int a,int b)
{
  return min(mprec[a][l2k],mprec[b-(1<<l2k)+1][l2k]);
}
int main()
{

  f>>n>>k;
  for(int i=0;i<n;i++)
    f>>v[i];
  precalc(v,n);

  l2k=log2(k);
    int mx=vmin(0,k-1);
    int imax=0;
    for(int i=1;i<n-k+1;i++)
    {
        int minim=vmin(i,i+k-1);
        if(minim>mx)
            {
                mx=minim;
                imax=i;
            }

    }
    g<<imax+1<<" "<<imax+k<<" "<<mx;

}