techpi info oltenia 2014 v-vi (neterm.)

#include <fstream>
#include <cmath>

using namespace std;

ifstream f("techpi.in");
ofstream g("techpi.out");

int main()
{
    int v[31663],li,ls,mij,k,t,poz
    for (i=0;i<=31662;i++)
 v[i]=i*i+13*i;
 f>>t;
 for (i=1;i<=t;i++)
 {
     f>>k;
     //caut binar pozitia pe care se afla k in v[]
     li=0;
     ls=sqrtl(k);
     while (li<=ls)
     {
         mij=(li+ls)/2;
         if (v[mij]>k && v[mij-1]<=k )
         {
             poz=mij-1;
             break;

         }
         if (v[mij]>k)
         ls=mij-1;
         else
         li=mij+1;
     }
     if (v[poz]==k)
     poz--;
     g<<poz<<'\n';
 }

    return 0;
}