import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        
        Scanner sc = new Scanner (System.in);
        int tem = 0;
        
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int x = sc.nextInt();
        
        for(int i=0;i<=a;i++){
            for(int j=0;j<=b;j++){
                for(int k=0;k<=c;k++){
                    if (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                }
            }
        }
        
        System.out.printf("%d\n",tem);
        tem=0;
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        
        Scanner sc = new Scanner (System.in);
        int tem = 0;
        
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int x = sc.nextInt();
        
        for(int i=0;i<=a;i++){
            for(int j=0;j<=b;j++){
                for(int k=0;k<=c;k++){
                    if (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                }
            }
        }
        
        System.out.printf("%d\n",tem);
        tem=0;
    }
} Main public static void main(String[] args) {
        
        Scanner sc = new Scanner (System.in);
        int tem = 0;
        
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int x = sc.nextInt();
        
        for(int i=0;i<=a;i++){
            for(int j=0;j<=b;j++){
                for(int k=0;k<=c;k++){
                    if (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                }
            }
        }
        
        System.out.printf("%d\n",tem);
        tem=0;
    } main {
        
        Scanner sc = new Scanner (System.in);
        int tem = 0;
        
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int x = sc.nextInt();
        
        for(int i=0;i<=a;i++){
            for(int j=0;j<=b;j++){
                for(int k=0;k<=c;k++){
                    if (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                }
            }
        }
        
        System.out.printf("%d\n",tem);
        tem=0;
    } Scanner sc = new Scanner (System.in); sc new Scanner (System.in) int tem = 0; tem 0 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 for(int i=0;i<=a;i++){
            for(int j=0;j<=b;j++){
                for(int k=0;k<=c;k++){
                    if (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                }
            }
        } 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 (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                }
            }
        } {
            for(int j=0;j<=b;j++){
                for(int k=0;k<=c;k++){
                    if (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                }
            }
        } for(int j=0;j<=b;j++){
                for(int k=0;k<=c;k++){
                    if (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                }
            } int j=0; int j=0; j 0 j<=b j b j++ j++ j {
                for(int k=0;k<=c;k++){
                    if (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                }
            } {
                for(int k=0;k<=c;k++){
                    if (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                }
            } for(int k=0;k<=c;k++){
                    if (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                } int k=0; int k=0; k 0 k<=c k c k++ k++ k {
                    if (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                } {
                    if (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                } if (500*i+100*j+50*k == x){
                        tem += 1;
                    } 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 x {
                        tem += 1;
                    } tem += 1 tem 1 System.out.printf("%d\n",tem) System.out.printf System.out System System.out "%d\n" tem tem=0 tem 0 String[] args args public class Main {
    public static void main(String[] args) {
        
        Scanner sc = new Scanner (System.in);
        int tem = 0;
        
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int x = sc.nextInt();
        
        for(int i=0;i<=a;i++){
            for(int j=0;j<=b;j++){
                for(int k=0;k<=c;k++){
                    if (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                }
            }
        }
        
        System.out.printf("%d\n",tem);
        tem=0;
    }
} public class Main {
    public static void main(String[] args) {
        
        Scanner sc = new Scanner (System.in);
        int tem = 0;
        
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int x = sc.nextInt();
        
        for(int i=0;i<=a;i++){
            for(int j=0;j<=b;j++){
                for(int k=0;k<=c;k++){
                    if (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                }
            }
        }
        
        System.out.printf("%d\n",tem);
        tem=0;
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        
        Scanner sc = new Scanner (System.in);
        int tem = 0;
        
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int x = sc.nextInt();
        
        for(int i=0;i<=a;i++){
            for(int j=0;j<=b;j++){
                for(int k=0;k<=c;k++){
                    if (500*i+100*j+50*k == x){
                        tem += 1;
                    }
                }
            }
        }
        
        System.out.printf("%d\n",tem);
        tem=0;
    }
}
