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Cod sursa(job #187488)
#include<fstream.h>
ifstream fin ("fractii.in");
ofstream fout ("fractii.out");
int main ()
{
long long a,n,m,k,nr,i,w;
fin>>k;
nr=0;
nr=1;
for(i=1;i<=k;i++)
for(w=k;w>=1;w--)
{
n=i;
m=w;
// if(i%2!=0 && w%2==0 || i%2==0 && w%2!=0 || i%2!=0 && w%2!=0)
// {
/* while(n%m!=0)
{
a=n%m;
n=m;
m=a;
}*/
// if(m==1)
// nr++;}
// fout<<i<<"/"<<w<<"\n";
}
fout<<nr;
return 0;
}