import java.util.Scanner;

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

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        int c = Integer.parseInt(sc.next());
        int x = Integer.parseInt(sc.next());
        int count = 0;
        for(int i = 0; i <= a; i++) {
            if(500 * i > x) {
                break;
            }
            for(int j = 0; j <= b; j++) {
                if(500 * i + 100 * j > x) {
                    break;
                }
                for(int k = 0; k <= c; k++) {
                    if(500 * i + 100 * j + 50 * k > x) {
                        break;
                    }
                    int sum = 500 * i + 100 * j + 50 * k;
                    if(sum == x) {
                        count++;
                    }
                }
            }
        }
        System.out.println(count);
    }
}