import java.util.*;

class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);    //scanner
        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+1;i++){
            for(int j=0;j<b+1;j++){
                for(int k=0;k<c+1;k++){
                    if(500*i+100*j+50*k==x){
                        ans++;
                    }
                }
            }
        }

        System.out.println(ans);    // output
    }
} import java.util.*; util.* java class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);    //scanner
        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+1;i++){
            for(int j=0;j<b+1;j++){
                for(int k=0;k<c+1;k++){
                    if(500*i+100*j+50*k==x){
                        ans++;
                    }
                }
            }
        }

        System.out.println(ans);    // output
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);    //scanner
        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+1;i++){
            for(int j=0;j<b+1;j++){
                for(int k=0;k<c+1;k++){
                    if(500*i+100*j+50*k==x){
                        ans++;
                    }
                }
            }
        }

        System.out.println(ans);    // output
    } main {
        Scanner sc = new Scanner(System.in);    //scanner
        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+1;i++){
            for(int j=0;j<b+1;j++){
                for(int k=0;k<c+1;k++){
                    if(500*i+100*j+50*k==x){
                        ans++;
                    }
                }
            }
        }

        System.out.println(ans);    // output
    } 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+1;i++){
            for(int j=0;j<b+1;j++){
                for(int k=0;k<c+1;k++){
                    if(500*i+100*j+50*k==x){
                        ans++;
                    }
                }
            }
        } int i=0; int i=0; i 0 i<a+1 i a+1 a 1 i++ i++ i {
            for(int j=0;j<b+1;j++){
                for(int k=0;k<c+1;k++){
                    if(500*i+100*j+50*k==x){
                        ans++;
                    }
                }
            }
        } {
            for(int j=0;j<b+1;j++){
                for(int k=0;k<c+1;k++){
                    if(500*i+100*j+50*k==x){
                        ans++;
                    }
                }
            }
        } for(int j=0;j<b+1;j++){
                for(int k=0;k<c+1;k++){
                    if(500*i+100*j+50*k==x){
                        ans++;
                    }
                }
            } int j=0; int j=0; j 0 j<b+1 j b+1 b 1 j++ j++ j {
                for(int k=0;k<c+1;k++){
                    if(500*i+100*j+50*k==x){
                        ans++;
                    }
                }
            } {
                for(int k=0;k<c+1;k++){
                    if(500*i+100*j+50*k==x){
                        ans++;
                    }
                }
            } for(int k=0;k<c+1;k++){
                    if(500*i+100*j+50*k==x){
                        ans++;
                    }
                } int k=0; int k=0; k 0 k<c+1 k c+1 c 1 k++ k++ k {
                    if(500*i+100*j+50*k==x){
                        ans++;
                    }
                } {
                    if(500*i+100*j+50*k==x){
                        ans++;
                    }
                } if(500*i+100*j+50*k==x){
                        ans++;
                    } 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 {
                        ans++;
                    } ans++ ans System.out.println(ans) System.out.println System.out System System.out ans String[] args args
import java.util.*;

class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);    //scanner
        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+1;i++){
            for(int j=0;j<b+1;j++){
                for(int k=0;k<c+1;k++){
                    if(500*i+100*j+50*k==x){
                        ans++;
                    }
                }
            }
        }

        System.out.println(ans);    // output
    }
}