import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A, B, C, X;
		A = sc.nextInt();
		B = sc.nextInt();
		C = sc.nextInt();
		X = sc.nextInt();

		int cnt = 0;
		for (int i = 0; i <= A; i++) {
			for (int j = 0; j <= B; j++) {
				for (int k = 0; k <= C; k++) {
					int sum = 500 * i + 100 * j + 50 * k;
					if(sum == X) cnt++;
				}
			}
		}

		System.out.print(cnt);
	}
}
/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