Cod sursa(job #2439590)

Utilizator StanCatalinStanCatalin StanCatalin Data 16 iulie 2019 14:31:33
Problema Secventa Scor 0
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.18 kb
#include <iostream>
#include <fstream>

using namespace std;

ifstream in("secventa.in");
ofstream out("secventa.out");

const int dim = 5000005;

int n,m,rmq[31][dim],dif,log2,st,dr,pu,rasp,mij;

int cauta(int x)
{
    long long rez = 0, pas = 32;
    while (pas > 0) {
        if ( (1LL<<(rez + pas) <= x)) {
            rez += pas;
        }
        pas/=2;
    }
    return rez;
}

int rezolva(int x,int y)
{
    dif = y-x+1;
  /// log2 = lg[dif];
  log2 = cauta(x);
    return min(rmq[log2][x] , rmq[log2][y - (1<<log2) + 1]);
}

int main()
{
    in >> n >> m;
    int a,i,j;
    for (i=1; i<=n; i++)
    {
        in >> a;
        rmq[0][i] = a;
    }
    for (j=1;  (1<<j) <= n; j++)
    {
        for (i=1; i + (1<<j) - 1 <=n; i++)
        {
            rmq[j][i] = min(rmq[j-1][i] , rmq[j-1][ i + (1<<(j-1))]);
        }
    }
    long long int maxi = -30006,rez,stmax,drmax,s = 0;
    for (i=1; i+m-1<=n; i++)
    {
        rez = rezolva(i,i+m-1);
        if (rez > maxi)
        {
            maxi = rez;
            stmax = i;
            drmax = i+m-1;
        }
    }
    out << stmax << " " << drmax << " " << maxi;
    return 0;
}