import java.util.Scanner;

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 x = 0;x <= k && x <= s;x++) {
			for(int y = 0;y <= k && y <= s;y++) {
				int z = s - x - y;
				if(z >= 0 && z <= k) {
					count++;
				}
			}
		}

		System.out.println(count);
    }
} import java.util.Scanner; Scanner 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 x = 0;x <= k && x <= s;x++) {
			for(int y = 0;y <= k && y <= s;y++) {
				int z = s - x - y;
				if(z >= 0 && z <= k) {
					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 x = 0;x <= k && x <= s;x++) {
			for(int y = 0;y <= k && y <= s;y++) {
				int z = s - x - y;
				if(z >= 0 && z <= k) {
					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 x = 0;x <= k && x <= s;x++) {
			for(int y = 0;y <= k && y <= s;y++) {
				int z = s - x - y;
				if(z >= 0 && z <= k) {
					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 x = 0;x <= k && x <= s;x++) {
			for(int y = 0;y <= k && y <= s;y++) {
				int z = s - x - y;
				if(z >= 0 && z <= k) {
					count++;
				}
			}
		} int x = 0; int x = 0; x 0 x <= k && x <= s x <= k x k x <= s x s x++ x++ x {
			for(int y = 0;y <= k && y <= s;y++) {
				int z = s - x - y;
				if(z >= 0 && z <= k) {
					count++;
				}
			}
		} {
			for(int y = 0;y <= k && y <= s;y++) {
				int z = s - x - y;
				if(z >= 0 && z <= k) {
					count++;
				}
			}
		} for(int y = 0;y <= k && y <= s;y++) {
				int z = s - x - y;
				if(z >= 0 && z <= k) {
					count++;
				}
			} int y = 0; int y = 0; y 0 y <= k && y <= s y <= k y k y <= s y s 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 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 x = 0;x <= k && x <= s;x++) {
			for(int y = 0;y <= k && y <= s;y++) {
				int z = s - x - y;
				if(z >= 0 && z <= k) {
					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 x = 0;x <= k && x <= s;x++) {
			for(int y = 0;y <= k && y <= s;y++) {
				int z = s - x - y;
				if(z >= 0 && z <= k) {
					count++;
				}
			}
		}

		System.out.println(count);
    }
} Main
import java.util.Scanner;

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 x = 0;x <= k && x <= s;x++) {
			for(int y = 0;y <= k && y <= s;y++) {
				int z = s - x - y;
				if(z >= 0 && z <= k) {
					count++;
				}
			}
		}

		System.out.println(count);
    }
}