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 targetPrice = sc.nextInt();

        int res = 0;// targetPriceになるパターン数
        for (int i = 0; i <= a; i++) {
            for (int j = 0; j <= b; j++) {
                for (int k = 0; k <= c; k++) {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                }
            }
        }

        System.out.println(res);
    }
} 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 targetPrice = sc.nextInt();

        int res = 0;// targetPriceになるパターン数
        for (int i = 0; i <= a; i++) {
            for (int j = 0; j <= b; j++) {
                for (int k = 0; k <= c; k++) {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                }
            }
        }

        System.out.println(res);
    }
} 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 targetPrice = sc.nextInt();

        int res = 0;// targetPriceになるパターン数
        for (int i = 0; i <= a; i++) {
            for (int j = 0; j <= b; j++) {
                for (int k = 0; k <= c; k++) {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                }
            }
        }

        System.out.println(res);
    } main {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int targetPrice = sc.nextInt();

        int res = 0;// targetPriceになるパターン数
        for (int i = 0; i <= a; i++) {
            for (int j = 0; j <= b; j++) {
                for (int k = 0; k <= c; k++) {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                }
            }
        }

        System.out.println(res);
    } 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 targetPrice = sc.nextInt(); targetPrice sc.nextInt() sc.nextInt sc int res = 0; res 0 for (int i = 0; i <= a; i++) {
            for (int j = 0; j <= b; j++) {
                for (int k = 0; k <= c; k++) {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                }
            }
        } 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++) {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                }
            }
        } {
            for (int j = 0; j <= b; j++) {
                for (int k = 0; k <= c; k++) {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                }
            }
        } for (int j = 0; j <= b; j++) {
                for (int k = 0; k <= c; k++) {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                }
            } int j = 0; int j = 0; j 0 j <= b j b j++ j++ j {
                for (int k = 0; k <= c; k++) {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                }
            } {
                for (int k = 0; k <= c; k++) {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                }
            } for (int k = 0; k <= c; k++) {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                } int k = 0; int k = 0; k 0 k <= c k c k++ k++ k {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                } {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                } int sum = (500*i) + (100*j) + (50*k); sum (500*i) + (100*j) + (50*k) (500*i) + (100*j) + (50*k) (500*i) 500 i (100*j) 100 j (50*k) 50 k if (targetPrice == sum) res++; targetPrice == sum targetPrice sum res++ res System.out.println(res) System.out.println System.out System System.out res 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 targetPrice = sc.nextInt();

        int res = 0;// targetPriceになるパターン数
        for (int i = 0; i <= a; i++) {
            for (int j = 0; j <= b; j++) {
                for (int k = 0; k <= c; k++) {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                }
            }
        }

        System.out.println(res);
    }
} 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 targetPrice = sc.nextInt();

        int res = 0;// targetPriceになるパターン数
        for (int i = 0; i <= a; i++) {
            for (int j = 0; j <= b; j++) {
                for (int k = 0; k <= c; k++) {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                }
            }
        }

        System.out.println(res);
    }
} 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 targetPrice = sc.nextInt();

        int res = 0;// targetPriceになるパターン数
        for (int i = 0; i <= a; i++) {
            for (int j = 0; j <= b; j++) {
                for (int k = 0; k <= c; k++) {
                    int sum = (500*i) + (100*j) + (50*k);
                    if (targetPrice == sum) res++;
                }
            }
        }

        System.out.println(res);
    }
}
