import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int count = 0;
		int[] coin = new int[3];
		for(int i = 0; i < 3; i++) {
			coin[i] = sc.nextInt();
		}
		int x = sc.nextInt();
		for(int t = 0; t <= coin[0]; t++) {
			for(int j = 0; j <= coin[1]; j++) {
				for(int k = 0; k <= coin[2]; k++) {
					int sum = 500 * t + 100 * j + 50 * k;
					if(sum == x) {
						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