import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc=new Scanner(System.in);
        
        int k=sc.nextInt();
        int s=sc.nextInt();
        int z;
        int count=0;
        for(int x=0; x<=k; x++){
            for(int y=0; y<=k; y++){
                z=s-x-y;
                if(0<=z && z<=k){
                    count+=1;
                }
            }
        }
        System.out.println(count);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc=new Scanner(System.in);
        
        int k=sc.nextInt();
        int s=sc.nextInt();
        int z;
        int count=0;
        for(int x=0; x<=k; x++){
            for(int y=0; y<=k; y++){
                z=s-x-y;
                if(0<=z && z<=k){
                    count+=1;
                }
            }
        }
        System.out.println(count);
    }
} Main public static void main(String[] args) throws Exception {
        Scanner sc=new Scanner(System.in);
        
        int k=sc.nextInt();
        int s=sc.nextInt();
        int z;
        int count=0;
        for(int x=0; x<=k; x++){
            for(int y=0; y<=k; y++){
                z=s-x-y;
                if(0<=z && z<=k){
                    count+=1;
                }
            }
        }
        System.out.println(count);
    } main {
        Scanner sc=new Scanner(System.in);
        
        int k=sc.nextInt();
        int s=sc.nextInt();
        int z;
        int count=0;
        for(int x=0; x<=k; x++){
            for(int y=0; y<=k; y++){
                z=s-x-y;
                if(0<=z && z<=k){
                    count+=1;
                }
            }
        }
        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 z; z int count=0; count 0 for(int x=0; x<=k; x++){
            for(int y=0; y<=k; y++){
                z=s-x-y;
                if(0<=z && z<=k){
                    count+=1;
                }
            }
        } int x=0; int x=0; x 0 x<=k x k x++ x++ x {
            for(int y=0; y<=k; y++){
                z=s-x-y;
                if(0<=z && z<=k){
                    count+=1;
                }
            }
        } {
            for(int y=0; y<=k; y++){
                z=s-x-y;
                if(0<=z && z<=k){
                    count+=1;
                }
            }
        } for(int y=0; y<=k; y++){
                z=s-x-y;
                if(0<=z && z<=k){
                    count+=1;
                }
            } int y=0; int y=0; y 0 y<=k y k y++ y++ y {
                z=s-x-y;
                if(0<=z && z<=k){
                    count+=1;
                }
            } {
                z=s-x-y;
                if(0<=z && z<=k){
                    count+=1;
                }
            } z=s-x-y z s-x-y s-x-y s x y if(0<=z && z<=k){
                    count+=1;
                } 0<=z && z<=k 0<=z 0 z z<=k z k {
                    count+=1;
                } count+=1 count 1 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) throws Exception {
        Scanner sc=new Scanner(System.in);
        
        int k=sc.nextInt();
        int s=sc.nextInt();
        int z;
        int count=0;
        for(int x=0; x<=k; x++){
            for(int y=0; y<=k; y++){
                z=s-x-y;
                if(0<=z && z<=k){
                    count+=1;
                }
            }
        }
        System.out.println(count);
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc=new Scanner(System.in);
        
        int k=sc.nextInt();
        int s=sc.nextInt();
        int z;
        int count=0;
        for(int x=0; x<=k; x++){
            for(int y=0; y<=k; y++){
                z=s-x-y;
                if(0<=z && z<=k){
                    count+=1;
                }
            }
        }
        System.out.println(count);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc=new Scanner(System.in);
        
        int k=sc.nextInt();
        int s=sc.nextInt();
        int z;
        int count=0;
        for(int x=0; x<=k; x++){
            for(int y=0; y<=k; y++){
                z=s-x-y;
                if(0<=z && z<=k){
                    count+=1;
                }
            }
        }
        System.out.println(count);
    }
}
