import java.util.*;

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

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner scan = new Scanner(System.in);
        int a = scan.nextInt();
        int b = scan.nextInt();
        int c = scan.nextInt();
        int x = scan.nextInt();
        int count = 0;
        if(x%50!=0)
        {
            System.out.println(0);
            return;
        }
        
        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)
                    {
                        count++;
                    }
                }
            }
        }
        System.out.println(count);
    }
}