import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		// 処理対象個数の入力
		Scanner sc = new Scanner(System.in);
		int input_500 = sc.nextInt();
		int input_100 = sc.nextInt();
		int input_50 = sc.nextInt();
		int input_pay = sc.nextInt();
		int result = 0;
		sc.close();

		for(int i=0;i<=input_500;i++) {
			for(int j=0;j<=input_100;j++) {
				for(int k=0;k<=input_50;k++) {
					if(i*500+j*100+k*50 == input_pay) {
						result++;
					}
				}
			}
		}

		// 出力
		System.out.println(result);

	}

}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz