import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int m500 = sc.nextInt();
        int m100 = sc.nextInt();
        int m50 = sc.nextInt();
      	int sum = sc.nextInt();
      	sc.close();
      	int count = 0;
      	for (int a=0; a<=m500; a++) {
        	for (int b=0; b<=m100; b++) {
              for (int c=0; c<=m50; c++) {
                if (500*a+100*b+50*c==sum) {
                  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