import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int num1 = sc.nextInt();
        int num2 = sc.nextInt();
        int num3 = sc.nextInt();
        int total = sc.nextInt();
        int result = 0;

        for(int i = 0; i <= num1; i++) {
            for(int j = 0; j <= num2; j++) {
                for(int k = 0; k <= num3; k++) {
                	if (500 * i + 100 * j + 50 * k == total) {
                		result++;
                	}
                }
            }
        }
        System.out.println(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