Buggy python submission (verdict: Runtime Error):
h, w = map(int, input().split())
def calculate_t(x, y):
    min_d = 1e12
    for i in range(x):
        s1 = (y//2)*i
        s2 = y*(x-i)
        s3 = (y-y//2)*i
        min_d = min(min_d, max(s1,s2,s3) - min(s1,s2,s3))
    return min_d
def calculate_3(x, y):
    for i in range(x):
        w1 = i
        w2 = (x-i)//2
        x3 = x - w1 -w2
        return min(w1, w2, w3)*y
if (h*w)%3 == 0:
    print(0)
else:
    d1 = calculate_t(h,w)
    d2 = calculate_t(w,h)
    d3 = calculate_3(h,w)
    d4 = calculate_3(w,h)
    print(min(d1,d2,d3,d4))

Fixed submission:
h, w = map(int, input().split())
def calculate_t(x, y):
    min_d = 1e12
    for i in range(x):
        s1 = (y//2)*i
        s2 = y*(x-i)
        s3 = (y-y//2)*i
        min_d = min(min_d, max(s1,s2,s3) - min(s1,s2,s3))
    return min_d
def calculate_3(x, y):
    min_d = 1e12
    for i in range(x):
        w1 = i
        w2 = (x-i)//2
        w3 = x - w1 -w2
        min_d = min(min_d, (max(w1,w2,w3)-min(w1,w2,w3))*y)
    return min_d
if (h*w)%3 == 0:
    print(0)
else:
    d1 = calculate_t(h,w)
    d2 = calculate_t(w,h)
    d3 = calculate_3(h,w)
    d4 = calculate_3(w,h)
    print(min(d1,d2,d3,d4))

Buggy python submission (verdict: Runtime Error):
h, w = map(int, input().split())
if h%3 == 0 or w%3 ==0:
    print(0)
else:
    def calculate_t(x, y):
        d = h*w + 1
        i = x//2
        s1, s2 = 0, d
        rng = range(x) if x < 1000 else range(x//3, x*4//5)
        new_d = h*w
        for i in rng:
            s1 = (y//2)*i
            s2 = y*(x-i)
            s3 = (y-y//2)*i
            new_d = max(s1,s2,s3)- min(s1,s2,s3)
            if d > new_d:
                d = new_d
                continue
            else:
                break
        return d
    def calculate_3(x, y):
        h1 = y//3
        h2 = y//3 + y%3
        return x*(h2-h1)
    
    if h == w:
        print(min(d1,d2))
    else:
        d3 = calculate_t(w, h)
        d4 = calculate_3(w, h)
        print(min(d1,d2,d3,d4))

Fixed submission:
h, w = map(int, input().split())
def calculate_t(x, y):
    min_d = 1e12
    for i in range(x):
        s1 = (y//2)*i
        s2 = y*(x-i)
        s3 = (y-y//2)*i
        min_d = min(min_d, max(s1,s2,s3) - min(s1,s2,s3))
    return min_d
def calculate_3(x, y):
    min_d = 1e12
    for i in range(x):
        w1 = i
        w2 = (x-i)//2
        w3 = x - w1 -w2
        min_d = min(min_d, (max(w1,w2,w3)-min(w1,w2,w3))*y)
    return min_d
if (h*w)%3 == 0:
    print(0)
else:
    d1 = calculate_t(h,w)
    d2 = calculate_t(w,h)
    d3 = calculate_3(h,w)
    d4 = calculate_3(w,h)
    print(min(d1,d2,d3,d4))

Buggy python submission (verdict: Runtime Error):
h, w = map(int, input().split())
if h%3 == 0 or w%3 ==0:
    print(0)
else:
    def calculate_d(x, y):
        d = h*w + 1
        i = x//2
        s1, s2 = 0, d
        for i in range(x):
            s1 = (y//2)*i
            s2 = y*(x-i)
            s3 = (y-y//2)*i
            new_d = max(abs(s1-s2), abs(s1-s3))
            if s1 < s2:
                i = 
            if d > new_d:
                d = new_d
                continue
            else:
                break
        return d
    d1 = calculate_d(h, w)
    d2 = calculate_d(w, h)
    print(min(d1,d2))

Fixed submission:
h, w = map(int, input().split())
def calculate_t(x, y):
    min_d = 1e12
    for i in range(x):
        s1 = (y//2)*i
        s2 = y*(x-i)
        s3 = (y-y//2)*i
        min_d = min(min_d, max(s1,s2,s3) - min(s1,s2,s3))
    return min_d
def calculate_3(x, y):
    min_d = 1e12
    for i in range(x):
        w1 = i
        w2 = (x-i)//2
        w3 = x - w1 -w2
        min_d = min(min_d, (max(w1,w2,w3)-min(w1,w2,w3))*y)
    return min_d
if (h*w)%3 == 0:
    print(0)
else:
    d1 = calculate_t(h,w)
    d2 = calculate_t(w,h)
    d3 = calculate_3(h,w)
    d4 = calculate_3(w,h)
    print(min(d1,d2,d3,d4))