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Cod sursa(job #51508)
#include<fstream.h>
int i,j;
long n,l;
float a[100000];
int main()
{ ifstream f("fractii.in");
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
{ l++;
a[l]=(float)i/j;
}
for(i=1;i<l;i++)
{ j=i+1;
while(j<=l)
{ if(a[i]==a[j])
{ for(int p=j;p<l;p++)
a[p]=a[p+1];
l--;
j--;
}
j++;
}
}
ofstream g("fractii.out");
g<<l;
f.close();
g.close();
return 0;
}