Buggy python submission (verdict: Time Limit Exceeded):
N, K = map(int, input().split())
x = []
for i in range(N):
    x.append(list(map(int, input().split())))
ans = []
for i in range(N):
    for j in range(N):
        for l in range(N):
            for m in range(N):
                count = 0
                x1 = min(x[i][0], x[j][0])
                x2 = max(x[i][0], x[j][0])
                y1 = min(x[l][1], x[m][1])
                y2 = max(x[l][1], x[m][1])

                for k in range(N):
                    if x1 <= x[k][0] and x[k][0] <= x2 and y1 <= x[k][1] and x[k][1] <= y2:
                        count += 1
                if count >= K:
                    ans.append((x2 - x1) * (y2 - y1))
print(min(ans))


Fixed submission:
N, K = map(int, input().split())
x = []
for i in range(N):
    x.append(list(map(int, input().split())))
ans = []
for i in range(N):
    for j in range(i+1, N):
        for l in range(N):
            for m in range(l+1, N):
                count = 0
                x1 = min(x[i][0], x[j][0])
                x2 = max(x[i][0], x[j][0])
                y1 = min(x[l][1], x[m][1])
                y2 = max(x[l][1], x[m][1])

                for k in range(N):
                    if x1 <= x[k][0] and x[k][0] <= x2 and y1 <= x[k][1] and x[k][1] <= y2:
                        count += 1
                if count >= K:
                    ans.append((x2 - x1) * (y2 - y1))
print(min(ans))

Buggy python submission (verdict: Time Limit Exceeded):
N, K = map(int, input().split())
x = []
for i in range(N):
    x.append(list(map(int, input().split())))
ans = []
for i in range(N):
    for j in range(N):
        for l in range(N):
            for m in range(N):
                count = 0
                x1 = min(x[i][0], x[j][0])
                x2 = max(x[i][0], x[j][0])
                y1 = min(x[l][1], x[m][1])
                y2 = max(x[l][1], x[m][1])

                for k in range(N):
                    if x1 <= x[k][0] and x[k][0] <= x2 and y1 <= x[k][1] and x[k][1] <= y2:
                        count += 1
                if count >= K:
                    ans.append((x2 - x1) * (y2 - y1))
print(min(ans))


Fixed submission:
N, K = map(int, input().split())
x = []
for i in range(N):
    x.append(list(map(int, input().split())))
ans = []
for i in range(N):
    for j in range(i+1, N):
        for l in range(N):
            for m in range(l+1, N):
                count = 0
                x1 = min(x[i][0], x[j][0])
                x2 = max(x[i][0], x[j][0])
                y1 = min(x[l][1], x[m][1])
                y2 = max(x[l][1], x[m][1])

                for k in range(N):
                    if x1 <= x[k][0] and x[k][0] <= x2 and y1 <= x[k][1] and x[k][1] <= y2:
                        count += 1
                if count >= K:
                    ans.append((x2 - x1) * (y2 - y1))
print(min(ans))

Buggy python submission (verdict: Runtime Error):
N, K = map(int, input().split())
x = []
for i in range(N):
    x.append(list(map(int, input().split())))
ans = []
for i in range(N):
    for j in range(i+1, N):
        count = 0
        x1 = min(x[i][0], x[j][0])
        x2 = max(x[i][0], x[j][0])
        y1 = min(x[i][1], x[j][1])
        y2 = max(x[i][1], x[j][1])

        for k in range(N):
            if x1 <= x[k][0] and x[k][0] <= x2 and y1 <= x[k][1] and x[k][1] <= y2:
                count += 1
        if count >= K:
            ans.append((x2 - x1) * (y2 - y1))
print(min(ans))


Fixed submission:
N, K = map(int, input().split())
x = []
for i in range(N):
    x.append(list(map(int, input().split())))
ans = []
for i in range(N):
    for j in range(i+1, N):
        for l in range(N):
            for m in range(l+1, N):
                count = 0
                x1 = min(x[i][0], x[j][0])
                x2 = max(x[i][0], x[j][0])
                y1 = min(x[l][1], x[m][1])
                y2 = max(x[l][1], x[m][1])

                for k in range(N):
                    if x1 <= x[k][0] and x[k][0] <= x2 and y1 <= x[k][1] and x[k][1] <= y2:
                        count += 1
                if count >= K:
                    ans.append((x2 - x1) * (y2 - y1))
print(min(ans))

Buggy python submission (verdict: Runtime Error):
N, K = map(int, input().split())
x = []
for i in range(N):
    x.append(list(map(int, input().split())))
ans = []
for i in range(N):
    for j in range(i+1, N):
        count = 0
        x1 = min(x[i][0], x[j][0])
        x2 = max(x[i][0], x[j][0])
        y1 = min(x[i][1], x[j][1])
        y2 = max(x[i][1], x[j][1])
        print([x1, x2, y1, y2])

        for k in range(N):
            if x1 <= x[k][0] and x[k][0] <= x2 and y1 <= x[k][1] and x[k][1] <= y2:
                count += 1
        if count >= K:
            ans.append((x2 - x1) * (y2 - y1))
print(min(ans))


Fixed submission:
N, K = map(int, input().split())
x = []
for i in range(N):
    x.append(list(map(int, input().split())))
ans = []
for i in range(N):
    for j in range(i+1, N):
        for l in range(N):
            for m in range(l+1, N):
                count = 0
                x1 = min(x[i][0], x[j][0])
                x2 = max(x[i][0], x[j][0])
                y1 = min(x[l][1], x[m][1])
                y2 = max(x[l][1], x[m][1])

                for k in range(N):
                    if x1 <= x[k][0] and x[k][0] <= x2 and y1 <= x[k][1] and x[k][1] <= y2:
                        count += 1
                if count >= K:
                    ans.append((x2 - x1) * (y2 - y1))
print(min(ans))

Buggy python submission (verdict: Runtime Error):
N, K = map(int, input().split())
x = []
for i in range(N):
    x.append(list(map(int, input().split())))
ans = []
for i in range(N):
    for j in range(i+1, N):
        count = 0
        x1 = min(x[i][0], x[j][0])
        x2 = max(x[i][0], x[j][0])
        y1 = min(x[i][1], x[j][1])
        y2 = max(x[i][1], x[j][1])
        print([x1, x2, y1, y2])

        for k in range(N):
            if x1 <= x[k][0] and x[k][0] <= x2 and y1 <= x[k][1] and x[k][1] <= y2:
                count += 1
        print(count)
        if count >= K:
            ans.append((x2 - x1) * (y2 - y1))
print(min(ans))


Fixed submission:
N, K = map(int, input().split())
x = []
for i in range(N):
    x.append(list(map(int, input().split())))
ans = []
for i in range(N):
    for j in range(i+1, N):
        for l in range(N):
            for m in range(l+1, N):
                count = 0
                x1 = min(x[i][0], x[j][0])
                x2 = max(x[i][0], x[j][0])
                y1 = min(x[l][1], x[m][1])
                y2 = max(x[l][1], x[m][1])

                for k in range(N):
                    if x1 <= x[k][0] and x[k][0] <= x2 and y1 <= x[k][1] and x[k][1] <= y2:
                        count += 1
                if count >= K:
                    ans.append((x2 - x1) * (y2 - y1))
print(min(ans))