import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int A = Integer.parseInt(sc.next());
        int B = Integer.parseInt(sc.next());
        int C = Integer.parseInt(sc.next());
        int X = Integer.parseInt(sc.next());

        int res = 0;
        for (int a = 0; a <= A; a++) {
            for (int b = 0; b <= B; b++) {
                int c = (X - a * 500 - b * 100) / 50;
                if (c >= 0 && c <= C)
                    res++;
            }
        }

        System.out.println(res);
    }
}
/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