import java.util.Scanner;

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

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

        int count = 0;

        for (int i = 0; i <= A; i++) { // 500
            for (int j = 0; j <= B; j++) { // 100
                for (int k = 0; k <= C; k++) { // 50
                    int candidate = 500*i + 100*j + 50*k;
                    if (candidate == X) 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