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