import java.util.*;
public 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 count =0;
    for(int i =0;i<=A;i++){
    	for(int j=0;j<=B;j++){
    		for(int z=0;z<=C;z++){
    		if(X == 500*i + 100*j + 50*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