import java.util.*;

class Main{
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        int A=Integer.parseInt(sc.next());
        int B=Integer.parseInt(sc.next());
        int C=Integer.parseInt(sc.next());
        int X=Integer.parseInt(sc.next());
        int ans=0;
        for (int a=0;a<=A;a++){
            for (int b=0;b<=B;b++){
                for (int c=0;c<=C;c++){
                    if (a*500+b*100+c*50==X){
                        ans++;
                    }
                }
            }
        }
        System.out.println(ans);
    }
}
/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