import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final int K = sc.nextInt();
        final int S = sc.nextInt();

        int ans = 0;
        for (int x = 0; x <= K; x++) {
            for (int y = 0; y <= K; y++) {
                int z = S - (x + y);
                if (0 <= z && z <= K) ans++;
            }
        }
        System.out.println(ans);
    }
} import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final int K = sc.nextInt();
        final int S = sc.nextInt();

        int ans = 0;
        for (int x = 0; x <= K; x++) {
            for (int y = 0; y <= K; y++) {
                int z = S - (x + y);
                if (0 <= z && z <= K) ans++;
            }
        }
        System.out.println(ans);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final int K = sc.nextInt();
        final int S = sc.nextInt();

        int ans = 0;
        for (int x = 0; x <= K; x++) {
            for (int y = 0; y <= K; y++) {
                int z = S - (x + y);
                if (0 <= z && z <= K) ans++;
            }
        }
        System.out.println(ans);
    } main {
        Scanner sc = new Scanner(System.in);

        final int K = sc.nextInt();
        final int S = sc.nextInt();

        int ans = 0;
        for (int x = 0; x <= K; x++) {
            for (int y = 0; y <= K; y++) {
                int z = S - (x + y);
                if (0 <= z && z <= K) ans++;
            }
        }
        System.out.println(ans);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) final int K = sc.nextInt(); K sc.nextInt() sc.nextInt sc final int S = sc.nextInt(); S sc.nextInt() sc.nextInt sc int ans = 0; ans 0 for (int x = 0; x <= K; x++) {
            for (int y = 0; y <= K; y++) {
                int z = S - (x + y);
                if (0 <= z && z <= K) ans++;
            }
        } 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 (0 <= z && z <= K) ans++;
            }
        } {
            for (int y = 0; y <= K; y++) {
                int z = S - (x + y);
                if (0 <= z && z <= K) ans++;
            }
        } for (int y = 0; y <= K; y++) {
                int z = S - (x + y);
                if (0 <= z && z <= K) ans++;
            } int y = 0; int y = 0; y 0 y <= K y K y++ y++ y {
                int z = S - (x + y);
                if (0 <= z && z <= K) ans++;
            } {
                int z = S - (x + y);
                if (0 <= z && z <= K) ans++;
            } int z = S - (x + y); z S - (x + y) S (x + y) x y if (0 <= z && z <= K) ans++; 0 <= z && z <= K 0 <= z 0 z z <= K z K 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) {
        Scanner sc = new Scanner(System.in);

        final int K = sc.nextInt();
        final int S = sc.nextInt();

        int ans = 0;
        for (int x = 0; x <= K; x++) {
            for (int y = 0; y <= K; y++) {
                int z = S - (x + y);
                if (0 <= z && z <= K) ans++;
            }
        }
        System.out.println(ans);
    }
} public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final int K = sc.nextInt();
        final int S = sc.nextInt();

        int ans = 0;
        for (int x = 0; x <= K; x++) {
            for (int y = 0; y <= K; y++) {
                int z = S - (x + y);
                if (0 <= z && z <= K) ans++;
            }
        }
        System.out.println(ans);
    }
} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        final int K = sc.nextInt();
        final int S = sc.nextInt();

        int ans = 0;
        for (int x = 0; x <= K; x++) {
            for (int y = 0; y <= K; y++) {
                int z = S - (x + y);
                if (0 <= z && z <= K) ans++;
            }
        }
        System.out.println(ans);
    }
}
