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Cod sursa(job #497669)
#include <fstream>
using namespace std;
ifstream fin("fractii.in");
ofstream fout("fractii.out");
int main()
{
long long n,i,j,k = 0,k2,a[101];
fin >> n;
fin.close();
float s[10200];
for(i = 1; i <= n; i++)
a[i] = i;
for(i = 1; i <=n; i++)
for(j = 1; j <= n; j++)
{
s[k] = (float)a[i]/a[j];
k++;
}
k2 = k;
for(i = 0; i < k; i++)
for(j = i+1; j < k; j++)
{
if(s[i] == s[j])
{
s[j] = -k2;
k2--;
}
}
fout << k2;
fout.close();
return 0;
}