Buggy python submission (verdict: Time Limit Exceeded):
import math
from math import gcd,pi,sqrt
INF = float("inf")

import sys
sys.setrecursionlimit(10**6)
import itertools
from collections import Counter,deque
def i_input(): return int(input())
def i_map(): return map(int, input().split())
def i_list(): return list(i_map())
def i_row(N): return [i_input() for _ in range(N)]
def i_row_list(N): return [i_list() for _ in range(N)]
def s_input(): return input()
def s_map(): return input().split()
def s_list(): return list(s_map())
def s_row(N): return [s_input for _ in range(N)]
def s_row_str(N): return [s_list() for _ in range(N)]
def s_row_list(N): return [list(s_input()) for _ in range(N)]


def main():
    k,s = i_map()
    ans = 0
    l = list(itertools.combinations_with_replacement(list(range(k+1)),3))
    for i in l:
        x = i[0]
        y = i[1]
        z = i[2]
        if x+y+z == s:
            if len(set(i)) == 1:
                ans += 1
            elif len(set(i)) == 2:
                ans += 3
            else:
                ans += 6
    print(ans)

if __name__=="__main__":
    main()


Fixed submission:
import math
from math import gcd,pi,sqrt
INF = float("inf")

import sys
sys.setrecursionlimit(10**6)
import itertools
from collections import Counter,deque
def i_input(): return int(input())
def i_map(): return map(int, input().split())
def i_list(): return list(i_map())
def i_row(N): return [i_input() for _ in range(N)]
def i_row_list(N): return [i_list() for _ in range(N)]
def s_input(): return input()
def s_map(): return input().split()
def s_list(): return list(s_map())
def s_row(N): return [s_input for _ in range(N)]
def s_row_str(N): return [s_list() for _ in range(N)]
def s_row_list(N): return [list(s_input()) for _ in range(N)]


def main():
    k,s = i_map()
    ans = 0
    for x in range(k+1):
        for y in range(k+1):
            z = s-x-y
            if 0<=z <=k:
                ans += 1
    print(ans)

if __name__=="__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
import math
from math import gcd,pi,sqrt
INF = float("inf")

import sys
sys.setrecursionlimit(10**6)
import itertools
from collections import Counter,deque
def i_input(): return int(input())
def i_map(): return map(int, input().split())
def i_list(): return list(i_map())
def i_row(N): return [i_input() for _ in range(N)]
def i_row_list(N): return [i_list() for _ in range(N)]
def s_input(): return input()
def s_map(): return input().split()
def s_list(): return list(s_map())
def s_row(N): return [s_input for _ in range(N)]
def s_row_str(N): return [s_list() for _ in range(N)]
def s_row_list(N): return [list(s_input()) for _ in range(N)]


def main():
    k,s = i_map()
    ans = 0
    for x in range(k+1):
        for y in range(k+1):
            for z in range(k+1):
                if x+y+z == s:
                    ans += 1
    print(ans)


if __name__=="__main__":
    main()


Fixed submission:
import math
from math import gcd,pi,sqrt
INF = float("inf")

import sys
sys.setrecursionlimit(10**6)
import itertools
from collections import Counter,deque
def i_input(): return int(input())
def i_map(): return map(int, input().split())
def i_list(): return list(i_map())
def i_row(N): return [i_input() for _ in range(N)]
def i_row_list(N): return [i_list() for _ in range(N)]
def s_input(): return input()
def s_map(): return input().split()
def s_list(): return list(s_map())
def s_row(N): return [s_input for _ in range(N)]
def s_row_str(N): return [s_list() for _ in range(N)]
def s_row_list(N): return [list(s_input()) for _ in range(N)]


def main():
    k,s = i_map()
    ans = 0
    for x in range(k+1):
        for y in range(k+1):
            z = s-x-y
            if 0<=z <=k:
                ans += 1
    print(ans)

if __name__=="__main__":
    main()