import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int numberOfFiveHundredYen = sc.nextInt();
		int numberOfOneHundredYen = sc.nextInt();
		int numberOfFiftyYen = sc.nextInt();
		int fee = sc.nextInt();
		int count = 0;
		
		for(int i = 0; i <= numberOfFiveHundredYen; i++) {
			for(int j=0; j<= numberOfOneHundredYen; j++) {
				for(int k=0; k <= numberOfFiftyYen; k++){
					int amountOfPay = 500 * i + 100 * j + 50 * k;
					if(amountOfPay == fee) {
						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