import java.util.*;
 
public class Main {
  public static void main(String[] args) {
    int go = 0;
    int hya = 0;
    int gozyu = 0;
    int sum = 0;
    int count = 0;
    Scanner sc = new Scanner(System.in);
    go = sc.nextInt();
    hya = sc.nextInt();
    gozyu = sc.nextInt();
    sum = sc.nextInt();
    
    int i = 0;
    int j = 0;
    int k = 0;
    for(i = 0; i <= go; i++){
        for(j = 0; j <= hya; j++){
            for(k = 0; k <= gozyu; k++){
                if(500*i+100*j+50*k==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