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Cod sursa(job #801163)
#include <fstream>
using namespace std;
int ired(int i,int j)
{
int r;
if((i==j)&&(i==1))
r=1;
else
if((i==1)||(j==1))
r=1;
else
if((i%j==0)||(j%i==0))
r=0;
else
r=1;
return r;
}
int main()
{
int n,i,j;
long long r=0;
ifstream f("fractii.in");
ofstream g("fractii.out");
f>>n;
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
{
if(ired(i,j))
r++;
}
}
g<<r;
f.close();
g.close();
}