cmmdc n perechi 2 vectrori

#include <iostream>
#include <fstream>

using namespace std;
ifstream f("date.in");
ifstream ff("date2.in");
ofstream g("date.out");

int cmmdc (int a, int b)
{
    while (a != b)
    {
        if (a > b)
        {
            a = a - b;
        }
        else
        {
            b = b - a;
        }
    }
    return a;
}

int main()
{
    int v[100],a[100],i,j,n;
    f>>n;
    for (i=1;i<=n;i++)
    f>>v[i];
    for (j=1;j<=n;j++)
    ff>>a[j];

    for (i=1;i<=n;i++)
    for (j=1;j<=n;j++)
    if ( cmmdc (v[i],a[j]) == 1)
    g<<v[i]<<" "<<a[j]<<" ";

}