Cod sursa(job #390194)
| Utilizator |  mihai995 mihai995 |
Data | 3 februarie 2010 11:50:10 |
|---|---|---|---|
| Problema | Fractii | Scor | 0 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.2 kb |
#include <fstream.h>
int main()
{
ifstream f("fractii.in");
ofstream o("fractii.out");
long n,i;
unsigned long nr;
f>>n;
nr=n-1;
for (i=2;i<n;i++)
nr+=n-i-n/i+1;
o<<nr*2+1;
return 0;
}