import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) {Main instance = new Main();sc = instance.new Scanner();instance.solve();}
    private class Scanner {String[] s = new String[0];String regex = " ";int i = 0;BufferedReader br = new BufferedReader(new InputStreamReader(System.in));public String next() {try {if (i < s.length) { return s[i++];}String st = br.readLine();while ("".equals(st)) { st = br.readLine(); }s = st.split(regex, 0);i = 0;return s[i++];} catch (IOException e) { return null; }}public int nextInt(){return Integer.parseInt(next());}}        
    private static Scanner sc;

    private void solve() {
        int A = sc.nextInt();
        int B = sc.nextInt();
        int C = sc.nextInt();
        int X = sc.nextInt();
        int ans = 0;
        for (int i = 0; i <= A; i++) {
            for (int j = 0; j <= B; j++) {
                for (int k = 0; k <= C; k++) {
                    if (500*i+100*j+50*k == X) {
                        ans++;
                    }
                }
            }
        }
        System.out.println(ans);
    }
}
/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