Buggy python submission (verdict: Runtime Error):
from itertools import combinations

N, K = map(int, input().split())
points = []
for i in range(N):
    points.append(list(map(int, input().split())))

points.sort(key=lambda p:p[0])


min_area = 10**20
for k in range(K, N+1):
    for l in range(0, N-k+1):
        points_tmp = points[l:l+k-1]
        points_tmp.sort(key=lambda p:p[1])
        for m in range(0, N-K+1):
            points_selected = points_tmp[m, m+K-1]
            ymin = points_selected[0][1]
            ymax = points_selected[-1][1]
            points_selected.sort(key=lambda p:p[0])
            xmin = points_selected[0][0]
            xmax = points_selected[-1][0]
            area = (xmax-xmin) * (ymax-ymin)
            min_area = min(area, min_area)

print(min_area)


Fixed submission:
from itertools import combinations

N, K = map(int, input().split())
points = []
for i in range(N):
    points.append(list(map(int, input().split())))

xl = list(map(lambda p: p[0],
              points))
yl = list(map(lambda p: p[1],
              points))

def contained(point, xmin, xmax, ymin, ymax):
    return (xmin <= point[0] <= xmax) and (ymin <= point[1] <= ymax)

def count_contained(xmin, xmax, ymin, ymax):
    count = 0
    for point in points:
        if contained(point, xmin, xmax, ymin, ymax):
            count += 1
    return count

min_area = 10**20
for xs in combinations(xl, 2):
    xmin = min(xs)
    xmax = max(xs)
    for ys in combinations(yl, 2):
        ymin = min(ys)
        ymax = max(ys)
        if count_contained(xmin, xmax, ymin, ymax) >= K:
            area = (xmax-xmin) * (ymax-ymin)
            min_area = min(area, min_area)
print(min_area)

Buggy python submission (verdict: Runtime Error):
from itertools import combinations

N, K = map(int, input().split())
points = []
for i in range(N):
    points.append(list(map(int, input().split())))

points.sort(key=lambda p:p[0])


min_area = 10**20
for k in range(K, N+1):
    for l in range(0, N-k+1):
        points_tmp = points[l:l+k-1]
        points_tmp.sort(key=lambda p:p[1])
        for m in range(0, N-K+1):
            points_selected = points_tmp[m, m+K-1]
            ymin = points_selected[0][1]
            ymax = points_selected[-1][1]
            points_selected.sort(key=lambda p:p[0])
            xmin = points_selected[0][0]
            xmax = points_selected[-1][0]
            area = (xmax-xmin) * (ymax-ymin)
            min_area = min(area, min_area)

print(min_area)


Fixed submission:
from itertools import combinations

N, K = map(int, input().split())
points = []
for i in range(N):
    points.append(list(map(int, input().split())))

xl = list(map(lambda p: p[0],
              points))
yl = list(map(lambda p: p[1],
              points))

def contained(point, xmin, xmax, ymin, ymax):
    return (xmin <= point[0] <= xmax) and (ymin <= point[1] <= ymax)

def count_contained(xmin, xmax, ymin, ymax):
    count = 0
    for point in points:
        if contained(point, xmin, xmax, ymin, ymax):
            count += 1
    return count

min_area = 10**20
for xs in combinations(xl, 2):
    xmin = min(xs)
    xmax = max(xs)
    for ys in combinations(yl, 2):
        ymin = min(ys)
        ymax = max(ys)
        if count_contained(xmin, xmax, ymin, ymax) >= K:
            area = (xmax-xmin) * (ymax-ymin)
            min_area = min(area, min_area)
print(min_area)

Buggy python submission (verdict: Time Limit Exceeded):
from itertools import combinations

N, K = map(int, input().split())
points = []
for i in range(N):
    points.append(list(map(int, input().split())))

xl = list(map(lambda p: p[0],
              points))
yl = list(map(lambda p: p[1],
              points))

def contained(point, xmin, xmax, ymin, ymax):
    return (xmin <= point[0] <= xmax) and (ymin <= point[1] <= ymax)

def count_contained(xmin, xmax, ymin, ymax):
    count = 0
    for point in points:
        if contained(point, xmin, xmax, ymin, ymax):
            count += 1
    return count

min_area = 10**20
for xs in combinations(xl, 2):
    xmin = min(xs)
    xmax = max(xs)
    for ys in combinations(yl, 2):
        ymin = min(ys)
        ymax = max(ys)
        if count_contained(xmin, xmax, ymin, ymax) >= K:
            area = (xmax-xmin) * (ymax-ymin)
            min_area = min(area, min_area)
print(min_area)


Fixed submission:
from itertools import combinations

N, K = map(int, input().split())
points = []
for i in range(N):
    points.append(list(map(int, input().split())))

xl = list(map(lambda p: p[0],
              points))
yl = list(map(lambda p: p[1],
              points))

def contained(point, xmin, xmax, ymin, ymax):
    return (xmin <= point[0] <= xmax) and (ymin <= point[1] <= ymax)

def count_contained(xmin, xmax, ymin, ymax):
    count = 0
    for point in points:
        if contained(point, xmin, xmax, ymin, ymax):
            count += 1
    return count

min_area = 10**20
for xs in combinations(xl, 2):
    xmin = min(xs)
    xmax = max(xs)
    for ys in combinations(yl, 2):
        ymin = min(ys)
        ymax = max(ys)
        if count_contained(xmin, xmax, ymin, ymax) >= K:
            area = (xmax-xmin) * (ymax-ymin)
            min_area = min(area, min_area)
print(min_area)