import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner cin = new Scanner(System.in);
        int A = cin.nextInt();
        int B = cin.nextInt();
        int C = cin.nextInt();
        int X = cin.nextInt();
        int cnt = 0;
        for (int a = 0; a <= A; a++) {
            for (int b = 0; b <= B; b++) {
                for (int c = 0; c <= C; c++) {
                    int x = (a * 500) + (b * 100) + (c * 50);
                    if (x == X) cnt++;
                }
            }
        }
        System.out.println(cnt);
    }
}
/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