import java.lang.reflect.Array;
import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt(), s = sc.nextInt(), ret = 0;
        for(int i=0;i<=k;i++)for(int j=0;j<=k;j++){
            if(0<=s-i-j && s-i-j<=k)ret+=1;
        }
        System.out.println(ret);
    }
} import java.lang.reflect.Array; Array java.lang.reflect import java.util.*; util.* java public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt(), s = sc.nextInt(), ret = 0;
        for(int i=0;i<=k;i++)for(int j=0;j<=k;j++){
            if(0<=s-i-j && s-i-j<=k)ret+=1;
        }
        System.out.println(ret);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt(), s = sc.nextInt(), ret = 0;
        for(int i=0;i<=k;i++)for(int j=0;j<=k;j++){
            if(0<=s-i-j && s-i-j<=k)ret+=1;
        }
        System.out.println(ret);
    } main {
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt(), s = sc.nextInt(), ret = 0;
        for(int i=0;i<=k;i++)for(int j=0;j<=k;j++){
            if(0<=s-i-j && s-i-j<=k)ret+=1;
        }
        System.out.println(ret);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int k = sc.nextInt() k sc.nextInt() sc.nextInt sc s = sc.nextInt() s sc.nextInt() sc.nextInt sc ret = 0; ret 0 for(int i=0;i<=k;i++)for(int j=0;j<=k;j++){
            if(0<=s-i-j && s-i-j<=k)ret+=1;
        } int i=0; int i=0; i 0 i<=k i k i++ i++ i for(int j=0;j<=k;j++){
            if(0<=s-i-j && s-i-j<=k)ret+=1;
        } for(int j=0;j<=k;j++){
            if(0<=s-i-j && s-i-j<=k)ret+=1;
        } int j=0; int j=0; j 0 j<=k j k j++ j++ j {
            if(0<=s-i-j && s-i-j<=k)ret+=1;
        } {
            if(0<=s-i-j && s-i-j<=k)ret+=1;
        } if(0<=s-i-j && s-i-j<=k)ret+=1; 0<=s-i-j && s-i-j<=k 0<=s-i-j 0 s-i-j s-i-j s i j s-i-j<=k s-i-j s-i-j s i j k ret+=1 ret 1 System.out.println(ret) System.out.println System.out System System.out ret String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt(), s = sc.nextInt(), ret = 0;
        for(int i=0;i<=k;i++)for(int j=0;j<=k;j++){
            if(0<=s-i-j && s-i-j<=k)ret+=1;
        }
        System.out.println(ret);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt(), s = sc.nextInt(), ret = 0;
        for(int i=0;i<=k;i++)for(int j=0;j<=k;j++){
            if(0<=s-i-j && s-i-j<=k)ret+=1;
        }
        System.out.println(ret);
    }
} Main
import java.lang.reflect.Array;
import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int k = sc.nextInt(), s = sc.nextInt(), ret = 0;
        for(int i=0;i<=k;i++)for(int j=0;j<=k;j++){
            if(0<=s-i-j && s-i-j<=k)ret+=1;
        }
        System.out.println(ret);
    }
}