Solution.java

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;

public class Solution {

  // Complete the howManyGames function below.
  static int howManyGames(int p, int d, int m, int s) {
    int counter = 0;
    int current = p;
    while (s >= current) {
      counter++;
      s -= current;
      if (current - d < m) {
        current = m;
      } else {
        current -= d;
      }
    }

    return counter;
  }

  private static final Scanner scanner = new Scanner(System.in);

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

    String[] pdms = scanner.nextLine().split(" ");

    int p = Integer.parseInt(pdms[0]);

    int d = Integer.parseInt(pdms[1]);

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

    int s = Integer.parseInt(pdms[3]);

    int answer = howManyGames(p, d, m, s);

    bufferedWriter.write(String.valueOf(answer));
    bufferedWriter.newLine();

    bufferedWriter.close();

    scanner.close();
  }
}