
import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int C = sc.nextInt();
		int X = sc.nextInt();
		int res = 0;
		for (int i = 0; i <= A; i++) {
			for (int j = 0; j <= B; j++) {
				for (int j2 = 0; j2 <= C; j2++) {
					if (X == (500 * i + 100 * j + 50 * j2)) {
						res++;
					}
				}
			}

		}
		System.out.println(res);
	}
}
/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