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 ans = 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)
                        ans++;
                }
            }
        }
        System.out.println(ans);
    }
} 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 ans = 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)
                        ans++;
                }
            }
        }
        System.out.println(ans);
    }
} 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 ans = 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)
                        ans++;
                }
            }
        }
        System.out.println(ans);
    } 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 ans = 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)
                        ans++;
                }
            }
        }
        System.out.println(ans);
    } 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 ans = 0; ans 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)
                        ans++;
                }
            }
        } 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)
                        ans++;
                }
            }
        } {
            for (int j = 0; j <= B; j++) {
                for (int k = 0; k <= C; k++) {
                    if (X == 500 * i + 100 * j + 50 * k)
                        ans++;
                }
            }
        } for (int j = 0; j <= B; j++) {
                for (int k = 0; k <= C; k++) {
                    if (X == 500 * i + 100 * j + 50 * k)
                        ans++;
                }
            } 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)
                        ans++;
                }
            } {
                for (int k = 0; k <= C; k++) {
                    if (X == 500 * i + 100 * j + 50 * k)
                        ans++;
                }
            } for (int k = 0; k <= C; k++) {
                    if (X == 500 * i + 100 * j + 50 * k)
                        ans++;
                } int k = 0; int k = 0; k 0 k <= C k C k++ k++ k {
                    if (X == 500 * i + 100 * j + 50 * k)
                        ans++;
                } {
                    if (X == 500 * i + 100 * j + 50 * k)
                        ans++;
                } if (X == 500 * i + 100 * j + 50 * k)
                        ans++; 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 ans++ ans System.out.println(ans) System.out.println System.out System System.out ans 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 ans = 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)
                        ans++;
                }
            }
        }
        System.out.println(ans);
    }
} 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 ans = 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)
                        ans++;
                }
            }
        }
        System.out.println(ans);
    }
} 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 ans = 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)
                        ans++;
                }
            }
        }
        System.out.println(ans);
    }
}