import java.util.*;

public 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 X = scan.nextInt();
        int count = 0;
      
        for(int a = 0 ; a <= A; a ++){
          for(int b = 0 ; b <= B; b++){
            for(int c = 0 ; c <= C; c++){
               int t = a *500 + b * 100 + c * 50;
               if(t == X){
                 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