import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = scanner.nextInt();
        int b = scanner.nextInt();
        int c = scanner.nextInt();
        int x = scanner.nextInt();
        int cnt=0;

        for(int i=0; i<=a; i++){
            for(int j=0; j<=b; j++) {
               for(int k=0; k<=c; k++) {
                   if(((500*i)+(100*j)+(50*k)) == x) {
                       cnt++;
                   }
               }
            }
        }

        System.out.println(cnt);
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = scanner.nextInt();
        int b = scanner.nextInt();
        int c = scanner.nextInt();
        int x = scanner.nextInt();
        int cnt=0;

        for(int i=0; i<=a; i++){
            for(int j=0; j<=b; j++) {
               for(int k=0; k<=c; k++) {
                   if(((500*i)+(100*j)+(50*k)) == x) {
                       cnt++;
                   }
               }
            }
        }

        System.out.println(cnt);
    }
} Main public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = scanner.nextInt();
        int b = scanner.nextInt();
        int c = scanner.nextInt();
        int x = scanner.nextInt();
        int cnt=0;

        for(int i=0; i<=a; i++){
            for(int j=0; j<=b; j++) {
               for(int k=0; k<=c; k++) {
                   if(((500*i)+(100*j)+(50*k)) == x) {
                       cnt++;
                   }
               }
            }
        }

        System.out.println(cnt);
    } main {
        Scanner scanner = new Scanner(System.in);
        int a = scanner.nextInt();
        int b = scanner.nextInt();
        int c = scanner.nextInt();
        int x = scanner.nextInt();
        int cnt=0;

        for(int i=0; i<=a; i++){
            for(int j=0; j<=b; j++) {
               for(int k=0; k<=c; k++) {
                   if(((500*i)+(100*j)+(50*k)) == x) {
                       cnt++;
                   }
               }
            }
        }

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

        for(int i=0; i<=a; i++){
            for(int j=0; j<=b; j++) {
               for(int k=0; k<=c; k++) {
                   if(((500*i)+(100*j)+(50*k)) == x) {
                       cnt++;
                   }
               }
            }
        }

        System.out.println(cnt);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = scanner.nextInt();
        int b = scanner.nextInt();
        int c = scanner.nextInt();
        int x = scanner.nextInt();
        int cnt=0;

        for(int i=0; i<=a; i++){
            for(int j=0; j<=b; j++) {
               for(int k=0; k<=c; k++) {
                   if(((500*i)+(100*j)+(50*k)) == x) {
                       cnt++;
                   }
               }
            }
        }

        System.out.println(cnt);
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = scanner.nextInt();
        int b = scanner.nextInt();
        int c = scanner.nextInt();
        int x = scanner.nextInt();
        int cnt=0;

        for(int i=0; i<=a; i++){
            for(int j=0; j<=b; j++) {
               for(int k=0; k<=c; k++) {
                   if(((500*i)+(100*j)+(50*k)) == x) {
                       cnt++;
                   }
               }
            }
        }

        System.out.println(cnt);
    }
}