import java.util.Scanner;

public class Main {

	private static Scanner sc = new Scanner(System.in);

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

	private static Scanner sc = new Scanner(System.in);

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

	private static Scanner sc = new Scanner(System.in);

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

	private static Scanner sc = new Scanner(System.in);

	public static void main(String[] args) {
		int k = sc.nextInt(), s = sc.nextInt();
		int ans = 0;
		for (int i = 0; i <= k; i++) {
			for (int j = 0; j <= k; j++) {
				int tmp = s - (i + j);
				if (0 <= tmp && tmp <= k) {
					ans++;
				}
			}
		}
		System.out.println(ans);
	}
} Main
import java.util.Scanner;

public class Main {

	private static Scanner sc = new Scanner(System.in);

	public static void main(String[] args) {
		int k = sc.nextInt(), s = sc.nextInt();
		int ans = 0;
		for (int i = 0; i <= k; i++) {
			for (int j = 0; j <= k; j++) {
				int tmp = s - (i + j);
				if (0 <= tmp && tmp <= k) {
					ans++;
				}
			}
		}
		System.out.println(ans);
	}
}