import java.util.*;
public class Main {
    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 i = 0; i <= k; i++) {
            for (int j = 0; j <= k; j++) {
                int com = s - (i+j);
                if (com >=0 && k >= com) count++;
            }
        }
        System.out.println(count);
    }
} import java.util.*; util.* java public class Main {
    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 i = 0; i <= k; i++) {
            for (int j = 0; j <= k; j++) {
                int com = s - (i+j);
                if (com >=0 && k >= com) count++;
            }
        }
        System.out.println(count);
    }
} Main 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 i = 0; i <= k; i++) {
            for (int j = 0; j <= k; j++) {
                int com = s - (i+j);
                if (com >=0 && k >= com) count++;
            }
        }
        System.out.println(count);
    } main {
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt();
        int s = sc.nextInt();
        int count = 0;
        for (int i = 0; i <= k; i++) {
            for (int j = 0; j <= k; j++) {
                int com = s - (i+j);
                if (com >=0 && k >= com) count++;
            }
        }
        System.out.println(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 i = 0; i <= k; i++) {
            for (int j = 0; j <= k; j++) {
                int com = s - (i+j);
                if (com >=0 && k >= com) count++;
            }
        } int i = 0; int i = 0; i 0 i <= k i k i++ i++ i {
            for (int j = 0; j <= k; j++) {
                int com = s - (i+j);
                if (com >=0 && k >= com) count++;
            }
        } {
            for (int j = 0; j <= k; j++) {
                int com = s - (i+j);
                if (com >=0 && k >= com) count++;
            }
        } for (int j = 0; j <= k; j++) {
                int com = s - (i+j);
                if (com >=0 && k >= com) count++;
            } int j = 0; int j = 0; j 0 j <= k j k j++ j++ j {
                int com = s - (i+j);
                if (com >=0 && k >= com) count++;
            } {
                int com = s - (i+j);
                if (com >=0 && k >= com) count++;
            } int com = s - (i+j); com s - (i+j) s (i+j) i j if (com >=0 && k >= com) count++; com >=0 && k >= com com >=0 com 0 k >= com k com 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 ){
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt();
        int s = sc.nextInt();
        int count = 0;
        for (int i = 0; i <= k; i++) {
            for (int j = 0; j <= k; j++) {
                int com = s - (i+j);
                if (com >=0 && k >= com) count++;
            }
        }
        System.out.println(count);
    }
} public class Main {
    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 i = 0; i <= k; i++) {
            for (int j = 0; j <= k; j++) {
                int com = s - (i+j);
                if (com >=0 && k >= com) count++;
            }
        }
        System.out.println(count);
    }
} Main
import java.util.*;
public class Main {
    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 i = 0; i <= k; i++) {
            for (int j = 0; j <= k; j++) {
                int com = s - (i+j);
                if (com >=0 && k >= com) count++;
            }
        }
        System.out.println(count);
    }
}