import java.util.Scanner;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int count = 0;
    int en500 = sc.nextInt();
    int en100 = sc.nextInt();
    int en50  = sc.nextInt();
    int sum   = sc.nextInt();
    
    for(int i=0; i<=en500; i++){
      for(int j=0; j<=en100; j++){
        for(int k=0; k<=en50; k++){
          if((i*500 + j*100 + k*50) == 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