import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner reader = new Scanner(System.in);
		int A = reader.nextInt();
		int B = reader.nextInt();
		int C = reader.nextInt();
		int X = reader.nextInt();
		int ans = 0;
		for (int i = 0; i <= A; i++) {
			for (int j = 0; j <= B; j++) {
				for (int k = 0; k <= C; k++) {
					int tmp = i * 500 + j * 100 + k * 50;
					if (tmp == X) {
						ans++;
					}
				}
			}
		}


		System.out.print(ans);
		reader.close();
	}
}




/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