import java.util.Scanner;

class Main {
    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        int a = Integer.parseInt(scan.nextLine());
        int b = Integer.parseInt(scan.nextLine());
        int c = Integer.parseInt(scan.nextLine());
        int x = Integer.parseInt(scan.nextLine());

        int count = 0;
        for (int i = 0; i < a + 1; i++) {
            for (int j = 0; j < b + 1; j++) {
                for (int k = 0; k < c + 1; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        }
        System.out.println(count);
    }
} import java.util.Scanner; Scanner java.util class Main {
    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        int a = Integer.parseInt(scan.nextLine());
        int b = Integer.parseInt(scan.nextLine());
        int c = Integer.parseInt(scan.nextLine());
        int x = Integer.parseInt(scan.nextLine());

        int count = 0;
        for (int i = 0; i < a + 1; i++) {
            for (int j = 0; j < b + 1; j++) {
                for (int k = 0; k < c + 1; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        }
        System.out.println(count);
    }
} Main public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        int a = Integer.parseInt(scan.nextLine());
        int b = Integer.parseInt(scan.nextLine());
        int c = Integer.parseInt(scan.nextLine());
        int x = Integer.parseInt(scan.nextLine());

        int count = 0;
        for (int i = 0; i < a + 1; i++) {
            for (int j = 0; j < b + 1; j++) {
                for (int k = 0; k < c + 1; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        }
        System.out.println(count);
    } main {

        Scanner scan = new Scanner(System.in);

        int a = Integer.parseInt(scan.nextLine());
        int b = Integer.parseInt(scan.nextLine());
        int c = Integer.parseInt(scan.nextLine());
        int x = Integer.parseInt(scan.nextLine());

        int count = 0;
        for (int i = 0; i < a + 1; i++) {
            for (int j = 0; j < b + 1; j++) {
                for (int k = 0; k < c + 1; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        }
        System.out.println(count);
    } Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int a = Integer.parseInt(scan.nextLine()); a Integer.parseInt(scan.nextLine()) Integer.parseInt Integer scan.nextLine() scan.nextLine scan int b = Integer.parseInt(scan.nextLine()); b Integer.parseInt(scan.nextLine()) Integer.parseInt Integer scan.nextLine() scan.nextLine scan int c = Integer.parseInt(scan.nextLine()); c Integer.parseInt(scan.nextLine()) Integer.parseInt Integer scan.nextLine() scan.nextLine scan int x = Integer.parseInt(scan.nextLine()); x Integer.parseInt(scan.nextLine()) Integer.parseInt Integer scan.nextLine() scan.nextLine scan int count = 0; count 0 for (int i = 0; i < a + 1; i++) {
            for (int j = 0; j < b + 1; j++) {
                for (int k = 0; k < c + 1; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        } int i = 0; int i = 0; i 0 i < a + 1 i a + 1 a 1 i++ i++ i {
            for (int j = 0; j < b + 1; j++) {
                for (int k = 0; k < c + 1; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        } {
            for (int j = 0; j < b + 1; j++) {
                for (int k = 0; k < c + 1; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        } for (int j = 0; j < b + 1; j++) {
                for (int k = 0; k < c + 1; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            } int j = 0; int j = 0; j 0 j < b + 1 j b + 1 b 1 j++ j++ j {
                for (int k = 0; k < c + 1; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            } {
                for (int k = 0; k < c + 1; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            } for (int k = 0; k < c + 1; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                } int k = 0; int k = 0; k 0 k < c + 1 k c + 1 c 1 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
import java.util.Scanner;

class Main {
    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        int a = Integer.parseInt(scan.nextLine());
        int b = Integer.parseInt(scan.nextLine());
        int c = Integer.parseInt(scan.nextLine());
        int x = Integer.parseInt(scan.nextLine());

        int count = 0;
        for (int i = 0; i < a + 1; i++) {
            for (int j = 0; j < b + 1; j++) {
                for (int k = 0; k < c + 1; k++) {
                    if (500 * i + 100 * j + 50 * k == x) {
                        count++;
                    }
                }
            }
        }
        System.out.println(count);
    }
}