import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int a,b,c,d;
		a = sc.nextInt();
		b = sc.nextInt();
		c = sc.nextInt();
		d = 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++) {
					if(500*i+100*j+50*k == d) {
						cnt++;
					}
				}
			}
		}
		System.out.println(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