import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author mikit
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        ABC087BCoins solver = new ABC087BCoins();
        solver.solve(1, in, out);
        out.close();
    }

    static class ABC087BCoins {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int a = in.nextInt(), b = in.nextInt(), c = in.nextInt(), x = in.nextInt();
            int ans = 0;
            for (int a0 = 0; a0 <= a; a0++) {
                for (int b0 = 0; b0 <= b; b0++) {
                    for (int c0 = 0; c0 <= c; c0++) {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    }
                }
            }
            out.println(ans);
        }

    }
}
 import java.io.OutputStream; OutputStream java.io import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io import java.io.PrintWriter; PrintWriter java.io import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        ABC087BCoins solver = new ABC087BCoins();
        solver.solve(1, in, out);
        out.close();
    }

    static class ABC087BCoins {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int a = in.nextInt(), b = in.nextInt(), c = in.nextInt(), x = in.nextInt();
            int ans = 0;
            for (int a0 = 0; a0 <= a; a0++) {
                for (int b0 = 0; b0 <= b; b0++) {
                    for (int c0 = 0; c0 <= c; c0++) {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    }
                }
            }
            out.println(ans);
        }

    }
} Main public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        ABC087BCoins solver = new ABC087BCoins();
        solver.solve(1, in, out);
        out.close();
    } main {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        ABC087BCoins solver = new ABC087BCoins();
        solver.solve(1, in, out);
        out.close();
    } InputStream inputStream = System.in; inputStream System.in System System.in OutputStream outputStream = System.out; outputStream System.out System System.out Scanner in = new Scanner(inputStream); in new Scanner(inputStream) PrintWriter out = new PrintWriter(outputStream); out new PrintWriter(outputStream) ABC087BCoins solver = new ABC087BCoins(); solver new ABC087BCoins() solver.solve(1, in, out) solver.solve solver 1 in out out.close() out.close out String[] args args static class ABC087BCoins {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int a = in.nextInt(), b = in.nextInt(), c = in.nextInt(), x = in.nextInt();
            int ans = 0;
            for (int a0 = 0; a0 <= a; a0++) {
                for (int b0 = 0; b0 <= b; b0++) {
                    for (int c0 = 0; c0 <= c; c0++) {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    }
                }
            }
            out.println(ans);
        }

    } ABC087BCoins public void solve(int testNumber, Scanner in, PrintWriter out) {
            int a = in.nextInt(), b = in.nextInt(), c = in.nextInt(), x = in.nextInt();
            int ans = 0;
            for (int a0 = 0; a0 <= a; a0++) {
                for (int b0 = 0; b0 <= b; b0++) {
                    for (int c0 = 0; c0 <= c; c0++) {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    }
                }
            }
            out.println(ans);
        } solve {
            int a = in.nextInt(), b = in.nextInt(), c = in.nextInt(), x = in.nextInt();
            int ans = 0;
            for (int a0 = 0; a0 <= a; a0++) {
                for (int b0 = 0; b0 <= b; b0++) {
                    for (int c0 = 0; c0 <= c; c0++) {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    }
                }
            }
            out.println(ans);
        } int a = in.nextInt() a in.nextInt() in.nextInt in b = in.nextInt() b in.nextInt() in.nextInt in c = in.nextInt() c in.nextInt() in.nextInt in x = in.nextInt(); x in.nextInt() in.nextInt in int ans = 0; ans 0 for (int a0 = 0; a0 <= a; a0++) {
                for (int b0 = 0; b0 <= b; b0++) {
                    for (int c0 = 0; c0 <= c; c0++) {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    }
                }
            } int a0 = 0; int a0 = 0; a0 0 a0 <= a a0 a a0++ a0++ a0 {
                for (int b0 = 0; b0 <= b; b0++) {
                    for (int c0 = 0; c0 <= c; c0++) {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    }
                }
            } {
                for (int b0 = 0; b0 <= b; b0++) {
                    for (int c0 = 0; c0 <= c; c0++) {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    }
                }
            } for (int b0 = 0; b0 <= b; b0++) {
                    for (int c0 = 0; c0 <= c; c0++) {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    }
                } int b0 = 0; int b0 = 0; b0 0 b0 <= b b0 b b0++ b0++ b0 {
                    for (int c0 = 0; c0 <= c; c0++) {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    }
                } {
                    for (int c0 = 0; c0 <= c; c0++) {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    }
                } for (int c0 = 0; c0 <= c; c0++) {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    } int c0 = 0; int c0 = 0; c0 0 c0 <= c c0 c c0++ c0++ c0 {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    } {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    } if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        } 500 * a0 + 100 * b0 + 50 * c0 == x 500 * a0 + 100 * b0 + 50 * c0 500 * a0 + 100 * b0 + 50 * c0 500 * a0 500 a0 100 * b0 100 b0 50 * c0 50 c0 x {
                            ans++;
                        } ans++ ans out.println(ans) out.println out ans int testNumber testNumber Scanner in in PrintWriter out out public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        ABC087BCoins solver = new ABC087BCoins();
        solver.solve(1, in, out);
        out.close();
    }

    static class ABC087BCoins {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int a = in.nextInt(), b = in.nextInt(), c = in.nextInt(), x = in.nextInt();
            int ans = 0;
            for (int a0 = 0; a0 <= a; a0++) {
                for (int b0 = 0; b0 <= b; b0++) {
                    for (int c0 = 0; c0 <= c; c0++) {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    }
                }
            }
            out.println(ans);
        }

    }
} public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        ABC087BCoins solver = new ABC087BCoins();
        solver.solve(1, in, out);
        out.close();
    }

    static class ABC087BCoins {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int a = in.nextInt(), b = in.nextInt(), c = in.nextInt(), x = in.nextInt();
            int ans = 0;
            for (int a0 = 0; a0 <= a; a0++) {
                for (int b0 = 0; b0 <= b; b0++) {
                    for (int c0 = 0; c0 <= c; c0++) {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    }
                }
            }
            out.println(ans);
        }

    }
} Main
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author mikit
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        ABC087BCoins solver = new ABC087BCoins();
        solver.solve(1, in, out);
        out.close();
    }

    static class ABC087BCoins {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int a = in.nextInt(), b = in.nextInt(), c = in.nextInt(), x = in.nextInt();
            int ans = 0;
            for (int a0 = 0; a0 <= a; a0++) {
                for (int b0 = 0; b0 <= b; b0++) {
                    for (int c0 = 0; c0 <= c; c0++) {
                        if (500 * a0 + 100 * b0 + 50 * c0 == x) {
                            ans++;
                        }
                    }
                }
            }
            out.println(ans);
        }

    }
}

