 
 
import java.util.Scanner;

  class Main {
    public static void main(String[]args){
        Scanner scan = new Scanner(System.in);
        int a = scan.nextInt();
        int b  =scan.nextInt();
        int c = scan.nextInt();
        int z = scan.nextInt();
        int count = 0 ;
        for(int i = 0 ; i <=a ; i++){
            for(int j = 0 ; j<=b ; j++){
                 
                for(int k = 0 ; k<=c ; k++){
                    int sum = 500*i+100*j+50*k ;
                    if(sum == z){
                        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