Cod sursa(job #1876572)

Utilizator raduzxstefanescu radu raduzx Data 12 februarie 2017 14:36:42
Problema Range minimum query Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.65 kb
#include <fstream>
#include <cmath>
using namespace std;
ifstream f("rmq.in");
ofstream g("rmq.out");
int rmq[40][100003],n;
int main()
{
    int n,q,i,j,x,y,o,k;
    f>>n>>q;
    for(i=1;i<=n;i++)
    {
        f>>rmq[0][i];
    }
    for(i=1;(1<<i)<=n;i++)
    {
        for(j=1;j+(1<<i)-1<=n;j++)
        {
            rmq[i][j]=min(rmq[i-1][j],rmq[i-1][j+(1<<(i-1))]);
        }
    }
  /*  for(i=0;i<=n;i++)
    {
        for(j=1;j<=n;j++)
            g<<rmq[i][j]<<" ";
        g<<'\n';
    }*/
    for(o=1;o<=q;o++)
    {
        f>>x>>y;
        k=log2(y-x);
        g<<min(rmq[k][x],rmq[k][y-(1<<k)+1])<<'\n';
    }
}