import java.util.*;
// warm-up
// Same pattern multiple times. I think its a sign
public class Main {

	static void solve() {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt(), B = sc.nextInt(), C = sc.nextInt(), X = sc.nextInt(), t=0;
		for (int i=0; i<=A; i++) {
			for (int j=0; j<=B; j++) {
				if ((X-(500*i)-(100*j))%50!=0) continue;
				int k = (X-(500*i)-(100*j))/50;
				if (k>=0 && k<=C) t++;
			}
		}
		System.out.println(t);
		sc.close();		
	}

	public static void main(String args[]) {
		solve();
	}

}
/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