Help me please! What's wrong with my program??




#include <iostream>
using namespace std;

#define ll unsigned long long


ll f(ll* a)
{
    swap(a[4], a[5]);

    for (int i=1; i<=3; i++)
        if (a[2*i-1]>a[2*i])
            swap(a[2*i-1], a[2*i]);

    for (int c=1; c<=3; c++)
        for (int i=1; i<3; i++)
            if (a[2*i-1]>a[2*i+1])
            {
                swap(a[2*i-1], a[2*i+1]);
                swap(a[2*i], a[2*i+2]);
            }

    return a[6]+10*a[5]+100*a[4]+1000*a[3]+10000*a[2]+100000*a[1];
}


ll a[100001][7], sol[800][100010], sum;

int main()
{
    ll n, k=0, sum;
    cin>>n;

    for (ll i=1; i<=n; i++)
    {
        for (int j=1; j<=6; j++)
            cin>>a[i][j];

        sum=f(a[i]);
        //cout<<"i="<<i<<" "<<sum<<endl;

        bool f=true;
        for (ll cnt=1; cnt<=k; cnt++)
            if (sol[cnt][100009]==sum)
            {
                f=false;
                ll tmp=++sol[cnt][0];
                sol[cnt][tmp]=i;
                break;
            }

        if (f)
        {
            ++k;
            sol[k][0]=1;
            sol[k][1]=i;
            sol[k][100009]=sum;
        }
    }


    cout<<k<<endl;
    for (ll i=1; i<=k; i++)
    {
        for (ll j=1; j<=sol[i][0]; j++)
            cout<<sol[i][j]<<" ";
        cout<<endl;
    }

}