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Cod sursa(job #799281)
#include <fstream>
using namespace std;
ifstream f("fractii.in");
ofstream g("fractii.out");
int n,nf;
float a,b[1000];
int exist(float x)
{int i;
for(i=0;i<nf;i++)
if(x==b[i])return 0;
return 1;
}
int main()
{int i,j;
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
{a=i/(float)j;;
if(exist(a))b[nf++]=a;
}
g<<nf;
return 0;
}