import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


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();

        int count = 0;
        for (int i = 0; i <= a; i++) {
            for (int j = 0; j <= b && i * 500 + j * 100 <= x; j++) {
                int tmp = i * 500 + j * 100;
                int rest = x - tmp;
                if (rest >= 0 && rest % 50 == 0 && rest / 50 <= c) count++;
            }
        }

        System.out.println(count);
    }
} import java.util.HashSet; HashSet java.util import java.util.Scanner; Scanner java.util import java.util.Set; Set 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();

        int count = 0;
        for (int i = 0; i <= a; i++) {
            for (int j = 0; j <= b && i * 500 + j * 100 <= x; j++) {
                int tmp = i * 500 + j * 100;
                int rest = x - tmp;
                if (rest >= 0 && rest % 50 == 0 && rest / 50 <= c) count++;
            }
        }

        System.out.println(count);
    }
} 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();

        int count = 0;
        for (int i = 0; i <= a; i++) {
            for (int j = 0; j <= b && i * 500 + j * 100 <= x; j++) {
                int tmp = i * 500 + j * 100;
                int rest = x - tmp;
                if (rest >= 0 && rest % 50 == 0 && rest / 50 <= c) count++;
            }
        }

        System.out.println(count);
    } main {
        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 && i * 500 + j * 100 <= x; j++) {
                int tmp = i * 500 + j * 100;
                int rest = x - tmp;
                if (rest >= 0 && rest % 50 == 0 && rest / 50 <= c) count++;
            }
        }

        System.out.println(count);
    } 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 && i * 500 + j * 100 <= x; j++) {
                int tmp = i * 500 + j * 100;
                int rest = x - tmp;
                if (rest >= 0 && rest % 50 == 0 && rest / 50 <= c) count++;
            }
        } int i = 0; int i = 0; i 0 i <= a i a i++ i++ i {
            for (int j = 0; j <= b && i * 500 + j * 100 <= x; j++) {
                int tmp = i * 500 + j * 100;
                int rest = x - tmp;
                if (rest >= 0 && rest % 50 == 0 && rest / 50 <= c) count++;
            }
        } {
            for (int j = 0; j <= b && i * 500 + j * 100 <= x; j++) {
                int tmp = i * 500 + j * 100;
                int rest = x - tmp;
                if (rest >= 0 && rest % 50 == 0 && rest / 50 <= c) count++;
            }
        } for (int j = 0; j <= b && i * 500 + j * 100 <= x; j++) {
                int tmp = i * 500 + j * 100;
                int rest = x - tmp;
                if (rest >= 0 && rest % 50 == 0 && rest / 50 <= c) count++;
            } int j = 0; int j = 0; j 0 j <= b && i * 500 + j * 100 <= x j <= b j b i * 500 + j * 100 <= x i * 500 + j * 100 i * 500 i 500 j * 100 j 100 x j++ j++ j {
                int tmp = i * 500 + j * 100;
                int rest = x - tmp;
                if (rest >= 0 && rest % 50 == 0 && rest / 50 <= c) count++;
            } {
                int tmp = i * 500 + j * 100;
                int rest = x - tmp;
                if (rest >= 0 && rest % 50 == 0 && rest / 50 <= c) count++;
            } int tmp = i * 500 + j * 100; tmp i * 500 + j * 100 i * 500 i 500 j * 100 j 100 int rest = x - tmp; rest x - tmp x tmp if (rest >= 0 && rest % 50 == 0 && rest / 50 <= c) count++; rest >= 0 && rest % 50 == 0 && rest / 50 <= c rest >= 0 && rest % 50 == 0 && rest / 50 <= c rest >= 0 rest 0 rest % 50 == 0 rest % 50 rest 50 0 rest / 50 <= c rest / 50 rest 50 c 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) {
        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 && i * 500 + j * 100 <= x; j++) {
                int tmp = i * 500 + j * 100;
                int rest = x - tmp;
                if (rest >= 0 && rest % 50 == 0 && rest / 50 <= c) count++;
            }
        }

        System.out.println(count);
    }
} 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();

        int count = 0;
        for (int i = 0; i <= a; i++) {
            for (int j = 0; j <= b && i * 500 + j * 100 <= x; j++) {
                int tmp = i * 500 + j * 100;
                int rest = x - tmp;
                if (rest >= 0 && rest % 50 == 0 && rest / 50 <= c) count++;
            }
        }

        System.out.println(count);
    }
} Main
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


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();

        int count = 0;
        for (int i = 0; i <= a; i++) {
            for (int j = 0; j <= b && i * 500 + j * 100 <= x; j++) {
                int tmp = i * 500 + j * 100;
                int rest = x - tmp;
                if (rest >= 0 && rest % 50 == 0 && rest / 50 <= c) count++;
            }
        }

        System.out.println(count);
    }
}