
import java.util.ArrayList;
import java.util.List;
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 cnt = 0;
		for (int i = 0; i <= k; i++) {
			for (int j = 0; j <= k; j++) {
				if (s - i - j < 0 || s - i - j > k) {
					continue;
				}
				cnt++;
			}
			
		}
		System.out.println(cnt);
	}
} import java.util.ArrayList; ArrayList java.util import java.util.List; List java.util 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 cnt = 0;
		for (int i = 0; i <= k; i++) {
			for (int j = 0; j <= k; j++) {
				if (s - i - j < 0 || s - i - j > k) {
					continue;
				}
				cnt++;
			}
			
		}
		System.out.println(cnt);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int k = sc.nextInt();
		int s = sc.nextInt();
		int cnt = 0;
		for (int i = 0; i <= k; i++) {
			for (int j = 0; j <= k; j++) {
				if (s - i - j < 0 || s - i - j > k) {
					continue;
				}
				cnt++;
			}
			
		}
		System.out.println(cnt);
	} main {
		Scanner sc = new Scanner(System.in);
		int k = sc.nextInt();
		int s = sc.nextInt();
		int cnt = 0;
		for (int i = 0; i <= k; i++) {
			for (int j = 0; j <= k; j++) {
				if (s - i - j < 0 || s - i - j > k) {
					continue;
				}
				cnt++;
			}
			
		}
		System.out.println(cnt);
	} 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 cnt = 0; cnt 0 for (int i = 0; i <= k; i++) {
			for (int j = 0; j <= k; j++) {
				if (s - i - j < 0 || s - i - j > k) {
					continue;
				}
				cnt++;
			}
			
		} int i = 0; int i = 0; i 0 i <= k i k i++ i++ i {
			for (int j = 0; j <= k; j++) {
				if (s - i - j < 0 || s - i - j > k) {
					continue;
				}
				cnt++;
			}
			
		} {
			for (int j = 0; j <= k; j++) {
				if (s - i - j < 0 || s - i - j > k) {
					continue;
				}
				cnt++;
			}
			
		} for (int j = 0; j <= k; j++) {
				if (s - i - j < 0 || s - i - j > k) {
					continue;
				}
				cnt++;
			} int j = 0; int j = 0; j 0 j <= k j k j++ j++ j {
				if (s - i - j < 0 || s - i - j > k) {
					continue;
				}
				cnt++;
			} {
				if (s - i - j < 0 || s - i - j > k) {
					continue;
				}
				cnt++;
			} if (s - i - j < 0 || s - i - j > k) {
					continue;
				} s - i - j < 0 || s - i - j > k s - i - j < 0 s - i - j s - i - j s i j 0 s - i - j > k s - i - j s - i - j s i j k {
					continue;
				} continue; cnt++ cnt System.out.println(cnt) System.out.println System.out System System.out cnt 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 cnt = 0;
		for (int i = 0; i <= k; i++) {
			for (int j = 0; j <= k; j++) {
				if (s - i - j < 0 || s - i - j > k) {
					continue;
				}
				cnt++;
			}
			
		}
		System.out.println(cnt);
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int k = sc.nextInt();
		int s = sc.nextInt();
		int cnt = 0;
		for (int i = 0; i <= k; i++) {
			for (int j = 0; j <= k; j++) {
				if (s - i - j < 0 || s - i - j > k) {
					continue;
				}
				cnt++;
			}
			
		}
		System.out.println(cnt);
	}
} Main

import java.util.ArrayList;
import java.util.List;
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 cnt = 0;
		for (int i = 0; i <= k; i++) {
			for (int j = 0; j <= k; j++) {
				if (s - i - j < 0 || s - i - j > k) {
					continue;
				}
				cnt++;
			}
			
		}
		System.out.println(cnt);
	}
}
