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(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                }
            }
        }
        
        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(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                }
            }
        }
        
        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(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                }
            }
        }
        
        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(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                }
            }
        }
        
        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(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                }
            }
        } 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(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                }
            }
        } {
            for(int j = 0; j <= b; j++){
                for(int k = 0; k <= c; k++){
                    if(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                }
            }
        } for(int j = 0; j <= b; j++){
                for(int k = 0; k <= c; k++){
                    if(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                }
            } int j = 0; int j = 0; j 0 j <= b j b j++ j++ j {
                for(int k = 0; k <= c; k++){
                    if(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                }
            } {
                for(int k = 0; k <= c; k++){
                    if(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                }
            } for(int k = 0; k <= c; k++){
                    if(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                } int k = 0; int k = 0; k 0 k <= c k c k++ k++ k {
                    if(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                } {
                    if(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                } if(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    } i*500 + j*100 + k*50 ==x i*500 + j*100 + k*50 i*500 + j*100 + k*50 i*500 i 500 j*100 j 100 k*50 k 50 x {
                        ans++;
                        break;
                    } ans++ ans break; if(i*500 + j*100 + k*50 > x){
                        break;
                    } i*500 + j*100 + k*50 > x i*500 + j*100 + k*50 i*500 + j*100 + k*50 i*500 i 500 j*100 j 100 k*50 k 50 x {
                        break;
                    } break; 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(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                }
            }
        }
        
        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(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                }
            }
        }
        
        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(i*500 + j*100 + k*50 ==x){
                        ans++;
                        break;
                    }else if(i*500 + j*100 + k*50 > x){
                        break;
                    }
                }
            }
        }
        
        System.out.println(ans);
    }
}
