import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {

        Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        int C = sc.nextInt();
        int X = sc.nextInt();

        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) == 0){
                        ans++;
                    }    
                }
            }
        }

        System.out.println(ans);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {

        Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        int C = sc.nextInt();
        int X = sc.nextInt();

        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) == 0){
                        ans++;
                    }    
                }
            }
        }

        System.out.println(ans);
    }
} Main public static void main(String[] args) throws Exception {

        Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        int C = sc.nextInt();
        int X = sc.nextInt();

        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) == 0){
                        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();

        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) == 0){
                        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 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) == 0){
                        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) == 0){
                        ans++;
                    }    
                }
            }
        } {
            for(int j = 0;j <= B;j++){
                for(int k=0;k <= C;k++){
                    if((X - 500*i - 100*j - 50*k) == 0){
                        ans++;
                    }    
                }
            }
        } for(int j = 0;j <= B;j++){
                for(int k=0;k <= C;k++){
                    if((X - 500*i - 100*j - 50*k) == 0){
                        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) == 0){
                        ans++;
                    }    
                }
            } {
                for(int k=0;k <= C;k++){
                    if((X - 500*i - 100*j - 50*k) == 0){
                        ans++;
                    }    
                }
            } for(int k=0;k <= C;k++){
                    if((X - 500*i - 100*j - 50*k) == 0){
                        ans++;
                    }    
                } int k=0; int k=0; k 0 k <= C k C k++ k++ k {
                    if((X - 500*i - 100*j - 50*k) == 0){
                        ans++;
                    }    
                } {
                    if((X - 500*i - 100*j - 50*k) == 0){
                        ans++;
                    }    
                } if((X - 500*i - 100*j - 50*k) == 0){
                        ans++;
                    } (X - 500*i - 100*j - 50*k) == 0 (X - 500*i - 100*j - 50*k) 100*j X - 500*i - 100*j - 50*k X 500*i 500 i 100*j 100 j 50*k 50 k 0 {
                        ans++;
                    } 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) throws Exception {

        Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        int C = sc.nextInt();
        int X = sc.nextInt();

        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) == 0){
                        ans++;
                    }    
                }
            }
        }

        System.out.println(ans);
    }
} public class Main {
    public static void main(String[] args) throws Exception {

        Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        int C = sc.nextInt();
        int X = sc.nextInt();

        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) == 0){
                        ans++;
                    }    
                }
            }
        }

        System.out.println(ans);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {

        Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        int C = sc.nextInt();
        int X = sc.nextInt();

        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) == 0){
                        ans++;
                    }    
                }
            }
        }

        System.out.println(ans);
    }
}
