Can you solve the magical maze riddle? - Alex Rosenthal

609,844 views ・ 2024-02-27

TED-Ed


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譯者: Lilian Chiu 審譯者: Esther Lam
00:07
Today is the annual Sly Wizard Tournament featuring competitors
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今天是一年一度的狡猾巫師錦標賽,
其參賽者來自魔法世界裡 三所最棒的學校,
00:11
from the wizarding world’s three greatest schools,
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00:13
and you’ve been entrusted with an enormous responsibility.
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你被賦予了一個重大的責任。
00:17
You are to administer the tournament.
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你負責主持這場錦標賽。
00:19
First, you and you alone will determine how many events there will be
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首先,你得自己一個人決定 錦標賽中要有多少比賽的場次,
00:23
and their scoring system.
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及其計分方式。
00:25
Then the three wizards will enter your maze
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接著,三名巫師會進入你的迷宮,
00:28
and compete in your chosen events in utmost secrecy;
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在你設定的比賽中競爭,一切保密進行;
00:32
only you and they will see what happens.
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只有你和他們知道發生了什麼事。
00:35
The competition begins and...
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比賽開始,……(八小時後)
00:38
Wow, that was one for the record books.
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哇,這真是創下紀錄的比賽。
00:40
The winner was... wait, you have no idea.
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獲勝的是……等等,你毫無頭緒。
00:45
The last thing you remember was a dark wizard showing up
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你最後的記憶是有個黑暗巫師出現,
00:48
and casting a forgetting curse.
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並施展了遺忘詛咒。
00:51
The competitors seem even more confused— each is convinced they won.
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參賽者似乎比你更混淆——
每個人都相信自己贏了。
00:56
This is bad.
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這很不妙。
00:57
There can be no do-overs,
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不能重新比一次,
00:59
and the last failure to declare a winner set off the first Great Wizarding War.
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而上回沒有宣佈贏家的結果 就是造成第一次魔法世界大戰。
01:05
You’ve got to figure this out— and fast.
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你得設法找出贏家——且要快。
01:07
But for the life of you, you can’t remember a thing.
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但你怎麼想就是什麼都想不起來。
01:10
You know you had to follow a few rules:
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你知道你必須遵循一些規則:
01:13
there had to be three or more events, each with a single winner and loser.
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比賽必須包含三場或更多,
每場都要有一名贏家和一名輸家。
01:17
Every event used the same scoring system,
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所有比賽都要用相同的計分方式,
01:20
where first place received more points than second,
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第一名的得分要比第二多,
01:23
and second more than third.
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第二名要比第三名多。
01:25
All points were positive integers.
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所有得分都是正整數。
01:28
Maybe there’s a record somewhere... oh, of course, your scorecard.
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也許在哪裡會有記錄……
哦,當然,你的計分卡。
01:32
Well, that leaves something to be desired.
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嗯,那還有所不足。
01:34
All that you wrote down was that in Calchemy,
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你寫下的只有,在「煉金術賽」中,
01:37
Newt-niz won, Leib-ton took second,
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紐特尼茲贏了,萊布頓位居第二,
01:40
and that was the only time Magnificent Marigold’s Magical Macademy
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這一整天,華麗金盞花魔法 學院只有在這一場比賽吊車尾。
01:44
got third all day.
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01:46
Oh, and some final scores:
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哦,你還寫下了一些最終得分,
01:48
one school got 22 points, and both of the others got 9.
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有一所學校得到二十二分,
另外兩所學校得到九分。
01:53
Why are you so bad at taking notes?!
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你的筆記怎麼做的這麼糟糕?
01:56
No time for self-recrimination.
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沒時間自責了。
01:58
The wizarding world is waiting.
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魔法世界正在等待結果。
02:00
Who won the tournament?
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誰贏了錦標賽?
02:01
Pause here to figure it out yourself. Answer in 3
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要自行解題,在此暫停。 答案公佈倒數:三。
02:04
Answer in 2
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答案公佈倒數:二。
02:06
Answer in 1
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答案公佈倒數:一。
02:09
At first, it may seem like there are an overwhelming number
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乍看之下,似乎有 非常多可能的計分方式。
02:12
of possible scoring systems,
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02:14
so let's see if we can narrow our options.
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咱們來看看能否減少可能的選項。
02:16
We can start by looking for clues in the total scores.
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我們可以從總分中的線索著手。
02:20
Every event was scored the same way,
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每場比賽的計分方式都相同,
02:23
so the sum of all points in the entire tournament
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因此整個錦標賽的總得分
02:25
must be a multiple of one event’s total.
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一定是單場比賽總得分的倍數。
02:29
In other words, if there were three events that scored 3, 2, 1,
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換言之,
如果有三場比賽, 得分分別為三、二、一,
02:33
which adds up to 6, the total points for the day would be 18,
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加起來等於六,
那天的錦標賽總得分就會是十八,
02:37
which is three events times 6 points.
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因為三場比賽乘以六分等於十八。
02:40
Our total is 40.
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我們的總得分是四十。
02:42
So we can make a table of possibilities: one event totaling 40 points,
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因此,我們可以把 所有可能性製成表格:
總共一場比賽,總分四十分,
02:47
two totaling 20, four totaling 10, and so on.
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二場比賽,總分各二十分; 四場比賽,總分各十分等等。
02:51
We know there were at least three events, which eliminates these options,
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我們知道至少要有三場比賽, 所以可以刪除這些選項,
02:56
and we can also get rid of events with fewer than 6 points,
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我們也可以刪掉比賽總分 少於六分的組合,
02:59
because the smallest possible total is 3 plus 2 plus 1.
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因為比賽總分最少要是三加二加一。
03:03
That leaves two prospects.
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可能性就只剩下兩個。
03:05
Let’s try to narrow those further by breaking down the possible points
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咱們來分解每場比賽中取得的 分數,來進一步刪減可能的選項:
03:09
earned in each event:
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03:11
if first place received 7 points,
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如果第一名得到七分,
03:13
the teams that had totals of 9 couldn’t have won an event
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總分得到九分的隊伍不可能 有在任何一場比賽獲勝,
03:17
because their total score would be 10 or more.
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要不然它們的總分就會是十分以上。
03:20
That means the team with 22 would have to have won all four.
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那就表示得分二十二分的隊伍 在四場比賽中都獲勝。
03:24
But then their total would be 28, so we can eliminate that option.
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但該隊的總分就會是二十八分, 所以這個選項可以刪除了。
03:28
And with four events, these numbers can't be made to add up to 22.
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如果是四場比賽,這些數字 不可能加總為二十二。
03:32
Finally, if first place got 5 points,
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最後,如果第一名得到五分,
03:35
the highest possible score with four events would be 20,
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四場比賽能得到的分數, 最多是二十分,
03:39
getting rid of these two as well.
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這兩個選項也可以刪除了。
03:41
In fact, five events scoring 4 each could only reach 20 as well.
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事實上,在五場比賽都取得 四分,總分也只有二十分。
03:46
That leaves us with just one possibility:
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剩下的可能性就只有一個:
03:49
five events each scored 5, 2, 1.
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五場比賽,各名次的得分 為五分、二分、一分。
03:53
There’s exactly one way to make those scores add up to 22:
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要讓這些得分加起來等於 二十二分,只有一種組合:
03:57
the winner finished first four times and second once.
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贏家在四場比賽得到 第一名,一場比賽得到第二名。
04:01
The scores of 9 mean one team won once and lost four times,
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總分九分意味著有一隊 贏了一場比賽,輸了四場比賽;
04:06
and the other lost once and took second four times.
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另一隊輸了一場, 另外四場拿到第二名。
04:10
That must be Marigold’s Macademy,
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那一定是金盞花學院,
04:12
whose only third place finish was Calchemy based on your note.
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根據你的筆記,該隊只有 在煉金術比賽中得到第三名。
04:17
And Leib-ton’s second place finish in Calchemy means they scored 22
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萊布頓在煉金術比賽中得到第二名
表示該隊的總分是二十二分,
04:22
and won the Sly Wizard Tournament.
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贏得了狡猾巫師錦標賽。
04:24
You have just enough evidence to prove it, keep your job, and avert war.
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你有足夠的證據來證明該隊獲勝,
保住了你的飯碗,還避免了戰爭。
04:29
Phew!
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呼!
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