ChocolateFeast.java

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;

class Result {

    public static int chocolateFeast(int n, int c, int m) {
        int wrapper = n / c;
        int wrapperLeft = 0;
        
        int totalBar = wrapper;
        int additionalBar = Integer.MAX_VALUE;
        
        while (additionalBar > 0) {
            wrapperLeft = wrapper % m;
            additionalBar = (wrapper - wrapperLeft) / m;
            totalBar += additionalBar;
            wrapper = wrapperLeft + additionalBar;
        }
        return totalBar;
    }

}

public class ChocolateFeast {
    public static void main(String[] args) throws IOException {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

        int t = Integer.parseInt(bufferedReader.readLine().trim());

        IntStream.range(0, t).forEach(tItr -> {
            try {
                String[] firstMultipleInput = bufferedReader.readLine().replaceAll("\\s+$", "").split(" ");

                int n = Integer.parseInt(firstMultipleInput[0]);

                int c = Integer.parseInt(firstMultipleInput[1]);

                int m = Integer.parseInt(firstMultipleInput[2]);

                int result = Result.chocolateFeast(n, c, m);

                bufferedWriter.write(String.valueOf(result));
                bufferedWriter.newLine();
            } catch (IOException ex) {
                throw new RuntimeException(ex);
            }
        });

        bufferedReader.close();
        bufferedWriter.close();
    }
}