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Cod sursa(job #802454)
#include<iostream>
#include<fstream>
using namespace std;
ifstream g("fractii.in");
ofstream f("fractii.out");
struct fractie{
int x,y;
}v[100];
int main()
{
int n,a=1,b=1,suma;
g>>n;
suma=n*n;
for(int i=1;i<=n;i++)
v[i].x=i;
for(int j=1;j<=n;j++)
v[j].y=j;
/*for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
{cout<<v[i].x<<"/"<<v[j].y<<" ";}*/
for(int i=1;i<=n;i++)
for(int j=1;i<=n;i++)
if((float)v[i].x/v[i].y==(float)v[j].x/v[j].y)
suma--;
f<<suma;
}