import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int A = sc.nextInt();
        int B = sc.nextInt();
        int C = sc.nextInt();
        int X = sc.nextInt();

        System.out.println(solve(A, B, C, X));

        sc.close();
    }

    static int solve(int A, int B, int C, int X) {
        int result = 0;
        for (int i = 0; i <= A; ++i) {
            for (int j = 0; j <= B; ++j) {
                for (int k = 0; k <= C; ++k) {
                    if (i * 500 + j * 100 + k * 50 == X) {
                        ++result;
                    }
                }
            }
        }

        return result;
    }
}
/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