import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        @SuppressWarnings("resource")
        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 k = 0 ; k <= c ; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        }
        System.out.println(count);

    }

} import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String[] args) {
        @SuppressWarnings("resource")
        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 k = 0 ; k <= c ; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        }
        System.out.println(count);

    }

} Main public static void main(String[] args) {
        @SuppressWarnings("resource")
        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 k = 0 ; k <= c ; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        }
        System.out.println(count);

    } main {
        @SuppressWarnings("resource")
        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 k = 0 ; k <= c ; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        }
        System.out.println(count);

    } @SuppressWarnings("resource")
        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 int count = 0; count 0 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) {
                        count++;
                    }
                }
            }
        } 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) {
                        count++;
                    }
                }
            }
        } {
            for (int j = 0 ; j <= b ; j++) {
                for (int k = 0 ; k <= c ; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        } for (int j = 0 ; j <= b ; j++) {
                for (int k = 0 ; k <= c ; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            } 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) {
                        count++;
                    }
                }
            } {
                for (int k = 0 ; k <= c ; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            } for (int k = 0 ; k <= c ; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                } int k = 0 ; int k = 0 ; k 0 k <= c k c k++ k++ k {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                } {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                } if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    } 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 {
                        count++;
                    } count++ count System.out.println(count) System.out.println System.out System System.out count String[] args args public class Main {

    public static void main(String[] args) {
        @SuppressWarnings("resource")
        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 k = 0 ; k <= c ; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        }
        System.out.println(count);

    }

} public class Main {

    public static void main(String[] args) {
        @SuppressWarnings("resource")
        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 k = 0 ; k <= c ; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        }
        System.out.println(count);

    }

} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        @SuppressWarnings("resource")
        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 k = 0 ; k <= c ; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        }
        System.out.println(count);

    }

}