import java.util.Scanner;

class Main{
	public static void main(String arg[]) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int C = sc.nextInt();
		int X = sc.nextInt();
		sc.close();
		int count = 0;
		
		for(int a = 0; a <= A; a++) {
			for(int b = 0; b <= B; b++) {
				for(int c = 0; c <= C; c++) {
					if(X == a*500 + b*100 + c*50) {
						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