import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A= sc.nextInt();
		int B = sc.nextInt();
		int C= sc.nextInt();
		int X= sc.nextInt();
		int count =0;
		for (int i=0;i*500<=X&&i<=A;i++) {
			int total = i*500;
			for (int j=0;j*100<=X-total&&j<=B;j++) {
				if ((X-total-j*100)/50<=C) {
					count ++;
				}
			}
		}
		System.out.println(count);
	}
}
/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