PIN codes

# include <iostream>
using namespace std;
#include <iomanip>
#include <math.h>
#include <cmath>
#include <string>

int main()
{
    int upborderoffirst;
    int upborderofsecond;
    int upborderofthird;
    cin >> upborderoffirst;
    cin >> upborderofsecond;
    cin >> upborderofthird;
    int one = 1;
    int two = 1;
    int three = 1;
    for (int one = 1; one <= upborderoffirst; one++) {
        for (int two = 2; two <= upborderofsecond; two++) {
            bool isprime = true;
            for (int n = 2; n < two; n++) {
                if (two % n == 0) {
                    isprime = false;
                }
            }
            for (int three = 1; three <= upborderofthird; three++) {
                if (one % 2 == 0 && isprime == true && three % 2 == 0) {
                    cout << one << " " << two << " " << three << endl;
                }
            }
        }
    }
    return 0;
}