import java.util.*;

class Main {
  public static void main(String[] args) {
    Scanner sc=new Scanner(System.in);
    int A=sc.nextInt();
    int B=sc.nextInt();
    int C=sc.nextInt();
    int X=sc.nextInt();

    int res=0;
    for (int a=0; a<=A; a++) {
      for (int b=0; b<=B; b++) {
        int c=(X-a*500-b*100)/50;
        if (c>=0 && c<=C)
          res++;
      }
    }
    System.out.println(res);
  }
}

/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