Cod sursa(job #355355)

Utilizator andraiandra ionescu andrai Data 10 octombrie 2009 20:12:27
Problema Fractii Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.23 kb
Raporteaza aceasta sursa 
#include<fstream.h>
int main()
{
  long long n,i,j,s;
  ifstream f("fractii.in");
  ofstream g("fractii.out");
  f>>n;
  s=2*n-1;
  for(i=2;i<=n-1;i++)
      s+=2*(n+1-i-n/i);
  g<<s;
  f.close();
  g.close();
  return 0;
}