import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		try(Scanner sc = new Scanner(System.in)){
			int fiveHundred = sc.nextInt();
			int hundred = sc.nextInt();
			int five = sc.nextInt();
			int x = sc.nextInt();
			int result = 0;
			for (int i = 0 ; i <= fiveHundred; i++) {
				for (int j = 0 ; j <= hundred ; j++) {
					for (int k=0; k <=five; k++) {
						if(i*500+j*100+50*k == x) {
							result++;
						}
					}
				}
			}
			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