import java.util.*;
import java.io.*;
import java.math.*;

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(500 * i + 100 * j + 50 * k == X) ans++;
                }
            }
        }
        System.out.println(ans);
    }
} import java.util.*; util.* java import java.io.*; io.* java import java.math.*; math.* 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(500 * i + 100 * j + 50 * k == X) 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(500 * i + 100 * j + 50 * k == X) 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(500 * i + 100 * j + 50 * k == X) 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(500 * i + 100 * j + 50 * k == X) 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(500 * i + 100 * j + 50 * k == X) ans++;
                }
            }
        } {
            for(int j = 0; j <= b; j++){
                for(int k = 0; k <= c; k++){
                    if(500 * i + 100 * j + 50 * k == X) ans++;
                }
            }
        } for(int j = 0; j <= b; j++){
                for(int k = 0; k <= c; k++){
                    if(500 * i + 100 * j + 50 * k == X) ans++;
                }
            } 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) ans++;
                }
            } {
                for(int k = 0; k <= c; k++){
                    if(500 * i + 100 * j + 50 * k == X) ans++;
                }
            } for(int k = 0; k <= c; k++){
                    if(500 * i + 100 * j + 50 * k == X) ans++;
                } int k = 0; int k = 0; k 0 k <= c k c 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 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(500 * i + 100 * j + 50 * k == X) 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(500 * i + 100 * j + 50 * k == X) ans++;
                }
            }
        }
        System.out.println(ans);
    }
} Main
import java.util.*;
import java.io.*;
import java.math.*;

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(500 * i + 100 * j + 50 * k == X) ans++;
                }
            }
        }
        System.out.println(ans);
    }
}
