Cod sursa(job #1766120)
| Utilizator |  Cristea Ciprian - Raul cyprc |
Data | 27 septembrie 2016 15:57:06 |
|---|---|---|---|
| Problema | Fractii | Scor | 0 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.32 kb |
#include<fstream>
int main()
{
std::ifstream f("fractii.in");
std::ofstream g("fractii.out");
int n;
f >> n;
f.close();
long nr = 2 * n-1;
for (int i = 2; i < n; i++)
{
for (int j = i+1; j <= n; j++)
{
if (i%j == 0 || j%i == 0) continue;
nr+=2;
}
}
g << nr;
g.close();
return 1;
}