Logic is incorrect for the program in loop
10:24 10 Oct 2013

So I'm trying to find the lowest year in pat.txt and highest year in don.txt:

Pat.txt

Androf O kidney 24 2012
Blaren B kidney 35 2010
Cosmer A kidney 35 2000
Eralod O heart 53 2009
Forend B kidney 31 2003

Don.txt

Zerk B kidney 20 2009
Rampe A kidney 31 2005
Darech B kidney 34 2008
Seo A kidney 26 2010
Yuio B kidney 26 2013

Code is as follows:

    struct Person {
    
    string surname;
    string BType;
    string organ;
    int age;
    int year, ID, IDp;
} Patient[50], Donor[50];

Then code of interest:

int Date = 5000;
        int Datel = 1000;
            for (i = 0; i < 6; i ++){
                    for (i1 = 0; i1 < 6; i1++){

                            if ((Patient[i].BType == Donor[i1].BType) && (Patient[i].organ == Donor[i1].organ)){

                                    if (Patient[i].year < Date){
                                        Date = Patient[i].year;

                                    //}
                                        if ((Patient[i].year == Date ) && (Donor[i1].year > Datel)){
                                            Date = Patient[i].year;
                                            Datel = Donor[i1].year;
                                            cout << Date << "   " << Datel << "\n";

                                        }

                                    }
                            }
                        }
                }

I feel like the logic is incorrect in one of the if statements that is doing the equality. At the moment it is finding the highest patient and lowest doner. I have to flip them. Spent hours trying to figure this out, i would really appreciate it if someone can see my mistake. I'm sure its a silly little mistake, but for the life of me I just cant find it.

c++ loops if-statement struct equality