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Cod sursa(job #412817)
#include<fstream>
using namespace std;
float a[10000];
int P,Q,N,k;
ifstream f ("fractii.in");ofstream g ("fractii.out");
int check(float l)
{
for(int i=0;i<k;i++)
if(a[i]==l)return 0;
return 1;
}
int main()
{
f>>N;
for(P=1;P<=N;P++)
for(Q=1;Q<=N;Q++) if(check((float)P/Q)){a[k]=(float)P/Q;k++;}
g<<k;
f.close();g.close();
return 0;
}