here is my submission in java, i have tested the code and provides correct results in almost all tests using the help from the discussions below however i failed the timeout, if anyone wants some refrence you can refer below-

import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set;

public class Main { public static void main(String[] args) { int n = 4; int k = 3;

    Set<String> fractions = new HashSet<>();

    for (int numerator = (int) Math.pow(10, n - 1); numerator < Math.pow(10, n); numerator++) {
        for (int denominator = numerator + 1; denominator < Math.pow(10, n); denominator++) {
            String numeratorString = Integer.toString(numerator);
            String denominatorString = Integer.toString(denominator);

            for (int i = 0; i < numeratorString.length(); i++) {
                char numeratorChar = numeratorString.charAt(i);
                for (int j = 0; j < denominatorString.length(); j++) {
                    char denominatorChar = denominatorString.charAt(j);

                    if (numeratorChar == '0' || denominatorChar == '0') {
                        continue;
                    }

                    if (numeratorChar == denominatorChar) {
                        String numeratorReduced = numeratorString.substring(0, i) + numeratorString.substring(i + 1);
                        String denominatorReduced = denominatorString.substring(0, j) + denominatorString.substring(j + 1);

                        if (denominatorReduced.equals("0")) {
                            continue;
                        }

                        double originalFraction = (double) numerator / denominator;
                        double reducedFraction = (double) Integer.parseInt(numeratorReduced) / Integer.parseInt(denominatorReduced);

                        if (originalFraction == reducedFraction) {
                            fractions.add(numerator + "," + denominator);
                        }
                    }
                }
            }
        }
    }

    int numeratorSum = 0;
    int denominatorSum = 0;

    List<String> fractionList = new ArrayList<>(fractions);
    for (int i = 0; i < fractionList.size(); i++) {
        String[] fraction = fractionList.get(i).split(",");
        int numerator = Integer.parseInt(fraction[0]);
        int denominator = Integer.parseInt(fraction[1]);

        numeratorSum += numerator;
        denominatorSum += denominator;
    }

    System.out.println(numeratorSum + " " + denominatorSum);
}

}