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();
                sc.close();
                int yono = 0;
                for(int i = 0 ; i <= a ; i++){
                        for(int j = 0 ; j <= b ; j++){
                                for(int k = 0 ; k <= c ; k++){
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                }
                        }
                }
                System.out.println(yono);
        }
}//0=48
//鶏になれ import java.util.*; util.* java 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();
                sc.close();
                int yono = 0;
                for(int i = 0 ; i <= a ; i++){
                        for(int j = 0 ; j <= b ; j++){
                                for(int k = 0 ; k <= c ; k++){
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                }
                        }
                }
                System.out.println(yono);
        }
}//0=48 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();
                sc.close();
                int yono = 0;
                for(int i = 0 ; i <= a ; i++){
                        for(int j = 0 ; j <= b ; j++){
                                for(int k = 0 ; k <= c ; k++){
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                }
                        }
                }
                System.out.println(yono);
        } main {
                Scanner sc = new Scanner(System.in);
                int a = sc.nextInt();
                int b = sc.nextInt();
                int c = sc.nextInt();
                int x = sc.nextInt();
                sc.close();
                int yono = 0;
                for(int i = 0 ; i <= a ; i++){
                        for(int j = 0 ; j <= b ; j++){
                                for(int k = 0 ; k <= c ; k++){
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                }
                        }
                }
                System.out.println(yono);
        } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int c = sc.nextInt(); c sc.nextInt() sc.nextInt sc int x = sc.nextInt(); x sc.nextInt() sc.nextInt sc sc.close() sc.close sc int yono = 0; yono 0 for(int i = 0 ; i <= a ; i++){
                        for(int j = 0 ; j <= b ; j++){
                                for(int k = 0 ; k <= c ; k++){
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                }
                        }
                } int i = 0 ; int i = 0 ; i 0 i <= a i a i++ i++ i {
                        for(int j = 0 ; j <= b ; j++){
                                for(int k = 0 ; k <= c ; k++){
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                }
                        }
                } {
                        for(int j = 0 ; j <= b ; j++){
                                for(int k = 0 ; k <= c ; k++){
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                }
                        }
                } for(int j = 0 ; j <= b ; j++){
                                for(int k = 0 ; k <= c ; k++){
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                }
                        } int j = 0 ; int j = 0 ; j 0 j <= b j b j++ j++ j {
                                for(int k = 0 ; k <= c ; k++){
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                }
                        } {
                                for(int k = 0 ; k <= c ; k++){
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                }
                        } for(int k = 0 ; k <= c ; k++){
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                } int k = 0 ; int k = 0 ; k 0 k <= c k c k++ k++ k {
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                } {
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                } if(x == 500 * i + 100 * j + 50 * k) yono++; x == 500 * i + 100 * j + 50 * k x 500 * i + 100 * j + 50 * k 500 * i + 100 * j + 50 * k 500 * i 500 i 100 * j 100 j 50 * k 50 k yono++ yono System.out.println(yono) System.out.println System.out System System.out yono String[] args args 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();
                sc.close();
                int yono = 0;
                for(int i = 0 ; i <= a ; i++){
                        for(int j = 0 ; j <= b ; j++){
                                for(int k = 0 ; k <= c ; k++){
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                }
                        }
                }
                System.out.println(yono);
        }
}//0=48 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();
                sc.close();
                int yono = 0;
                for(int i = 0 ; i <= a ; i++){
                        for(int j = 0 ; j <= b ; j++){
                                for(int k = 0 ; k <= c ; k++){
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                }
                        }
                }
                System.out.println(yono);
        }
}//0=48 Main
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();
                sc.close();
                int yono = 0;
                for(int i = 0 ; i <= a ; i++){
                        for(int j = 0 ; j <= b ; j++){
                                for(int k = 0 ; k <= c ; k++){
                                        if(x == 500 * i + 100 * j + 50 * k) yono++;
                                }
                        }
                }
                System.out.println(yono);
        }
}//0=48
//鶏になれ