Unique PIN Codes

#include <iostream>
#include<string>
#include <cmath>
using namespace std;
int main(){

        int n1;
        int n2;
        int n3;
        cin >> n1;
        cin >> n2;
        cin >> n3;

        for (int i = 1; i <= n1; i++) {

            for (int j = 1; j <= n2; j++) {

                for (int k = 1; k <= n3; k++) {

                    if (i % 2 == 0 && k % 2 == 0) {

                        if (j == 2 || j == 3 || j == 5 || j == 7){
                            cout<< i<<" "<<j<< " " << k;
                             cout<<endl;



                        }

                    }
                }
            }cout<<endl;
        }

    return 0;}