import java.util.*;
class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt(),b=sc.nextInt(),c=sc.nextInt(),x=sc.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++){
                    if(i*500+j*100+k*50==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