import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Deque;

public class Main {

	public static void main(String args[]) throws IOException {

		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		// String str[] = br.readLine().split(" ");
		int a = Integer.parseInt(br.readLine());
		int b = Integer.parseInt(br.readLine());
		int c = Integer.parseInt(br.readLine());
		int x = Integer.parseInt(br.readLine());

		int count = 0;

		for (int i = 0; i <= a; i++) {
			for (int j = 0; j <= b; j++) {
				for (int k = 0; k <= c; k++) {
					if (x == (i * 500 + j * 100 + k * 50)) {
						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