import java.util.Scanner;

public class Main {
    public static void main(String args[]) throws Exception {
        Scanner s = new Scanner(System.in);
        int a = s.nextInt();
        int b = s.nextInt();
        int c = s.nextInt();
        int sum = s.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++) {
                    if (500 * i + 100 * j + 50 * k == sum) {
                        ans++;
                    }
                }
            }
        }
        System.out.println(ans);
    }
}
/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