import java.util.Scanner;

public class Main
{
    private static void p(Object x) {
        System.out.println(x);
    }

    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt();
        int s = sc.nextInt();
        int count = 0;
        for (int x = 0; x <= k; x++) {
            for (int y = 0; y <= k; y++) {
                int z = s - x - y;
                if (z >= 0 && z <= k) {
                    count++;
                }
            }
        }
        p(count);
    }
} import java.util.Scanner; Scanner java.util public class Main
{
    private static void p(Object x) {
        System.out.println(x);
    }

    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt();
        int s = sc.nextInt();
        int count = 0;
        for (int x = 0; x <= k; x++) {
            for (int y = 0; y <= k; y++) {
                int z = s - x - y;
                if (z >= 0 && z <= k) {
                    count++;
                }
            }
        }
        p(count);
    }
} Main private static void p(Object x) {
        System.out.println(x);
    } p {
        System.out.println(x);
    } System.out.println(x) System.out.println System.out System System.out x Object x x public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt();
        int s = sc.nextInt();
        int count = 0;
        for (int x = 0; x <= k; x++) {
            for (int y = 0; y <= k; y++) {
                int z = s - x - y;
                if (z >= 0 && z <= k) {
                    count++;
                }
            }
        }
        p(count);
    } main {
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt();
        int s = sc.nextInt();
        int count = 0;
        for (int x = 0; x <= k; x++) {
            for (int y = 0; y <= k; y++) {
                int z = s - x - y;
                if (z >= 0 && z <= k) {
                    count++;
                }
            }
        }
        p(count);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int k = sc.nextInt(); k sc.nextInt() sc.nextInt sc int s = sc.nextInt(); s sc.nextInt() sc.nextInt sc int count = 0; count 0 for (int x = 0; x <= k; x++) {
            for (int y = 0; y <= k; y++) {
                int z = s - x - y;
                if (z >= 0 && z <= k) {
                    count++;
                }
            }
        } int x = 0; int x = 0; x 0 x <= k x k x++ x++ x {
            for (int y = 0; y <= k; y++) {
                int z = s - x - y;
                if (z >= 0 && z <= k) {
                    count++;
                }
            }
        } {
            for (int y = 0; y <= k; y++) {
                int z = s - x - y;
                if (z >= 0 && z <= k) {
                    count++;
                }
            }
        } for (int y = 0; y <= k; y++) {
                int z = s - x - y;
                if (z >= 0 && z <= k) {
                    count++;
                }
            } int y = 0; int y = 0; y 0 y <= k y k y++ y++ y {
                int z = s - x - y;
                if (z >= 0 && z <= k) {
                    count++;
                }
            } {
                int z = s - x - y;
                if (z >= 0 && z <= k) {
                    count++;
                }
            } int z = s - x - y; z s - x - y s - x - y s x y if (z >= 0 && z <= k) {
                    count++;
                } z >= 0 && z <= k z >= 0 z 0 z <= k z k {
                    count++;
                } count++ count p(count) p count String[] args args public class Main
{
    private static void p(Object x) {
        System.out.println(x);
    }

    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt();
        int s = sc.nextInt();
        int count = 0;
        for (int x = 0; x <= k; x++) {
            for (int y = 0; y <= k; y++) {
                int z = s - x - y;
                if (z >= 0 && z <= k) {
                    count++;
                }
            }
        }
        p(count);
    }
} public class Main
{
    private static void p(Object x) {
        System.out.println(x);
    }

    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt();
        int s = sc.nextInt();
        int count = 0;
        for (int x = 0; x <= k; x++) {
            for (int y = 0; y <= k; y++) {
                int z = s - x - y;
                if (z >= 0 && z <= k) {
                    count++;
                }
            }
        }
        p(count);
    }
} Main
import java.util.Scanner;

public class Main
{
    private static void p(Object x) {
        System.out.println(x);
    }

    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt();
        int s = sc.nextInt();
        int count = 0;
        for (int x = 0; x <= k; x++) {
            for (int y = 0; y <= k; y++) {
                int z = s - x - y;
                if (z >= 0 && z <= k) {
                    count++;
                }
            }
        }
        p(count);
    }
}
