Can you solve the magical maze riddle? - Alex Rosenthal

590,172 views ・ 2024-02-27

TED-Ed


请双击下面的英文字幕来播放视频。

翻译人员: Sammi Wang 校对人员: Lexi Ding
00:07
Today is the annual Sly Wizard Tournament featuring competitors
0
7211
4004
今天是一年一度的狡猾巫师锦标赛,
00:11
from the wizarding world’s three greatest schools,
1
11215
2711
参赛选手来自巫师界的 三大魔法学校,
00:13
and you’ve been entrusted with an enormous responsibility.
2
13926
3045
而你被赋予了巨大的责任。
00:17
You are to administer the tournament.
3
17221
2294
你负责组织这场比赛。
00:19
First, you and you alone will determine how many events there will be
4
19515
4421
首先,你一个人要决定举办多少赛项
00:23
and their scoring system.
5
23936
1752
及其对应的计分系统。
00:25
Then the three wizards will enter your maze
6
25855
2711
然后,三位巫师将进入你的迷宫
00:28
and compete in your chosen events in utmost secrecy;
7
28566
3962
极秘密地参与你设定的赛项;
00:32
only you and they will see what happens.
8
32653
2878
只有你和他们自己知道发生的一切。
00:35
The competition begins and...
9
35615
2419
比赛开始了……
00:38
Wow, that was one for the record books.
10
38242
2586
哇,这真是创纪录的一次比赛。
00:40
The winner was... wait, you have no idea.
11
40953
3921
赢家是……等等,你并不知道是谁。
00:45
The last thing you remember was a dark wizard showing up
12
45041
3462
你记得的最后一件事 是一个黑巫师出现
00:48
and casting a forgetting curse.
13
48503
2586
并施了个遗忘诅咒。
00:51
The competitors seem even more confused— each is convinced they won.
14
51339
5088
三位参赛选手似乎更加困惑—— 他们每个人都确信是自己赢了。
00:56
This is bad.
15
56552
1043
太糟糕了。
00:57
There can be no do-overs,
16
57637
1877
比赛没法重来,
00:59
and the last failure to declare a winner set off the first Great Wizarding War.
17
59514
5505
上一场没有成功判定输赢的比赛 可是引发了第一次巫师大战。
01:05
You’ve got to figure this out— and fast.
18
65186
2586
你必须搞定这件事——还得尽快。
01:07
But for the life of you, you can’t remember a thing.
19
67814
2961
但你却怎么都记不起来。
01:10
You know you had to follow a few rules:
20
70900
2502
你知道一些比赛规则:
01:13
there had to be three or more events, each with a single winner and loser.
21
73444
4421
当时有三个以上的赛项, 每项只有一个赢家和一个输家。
01:17
Every event used the same scoring system,
22
77949
2794
所有赛项的计分系统都一样,
01:20
where first place received more points than second,
23
80868
2962
第一名获得的分数比第二名多,
01:23
and second more than third.
24
83830
1710
第二名获得的分数比第三名多。
01:25
All points were positive integers.
25
85581
2753
所有分数均为正整数。
01:28
Maybe there’s a record somewhere... oh, of course, your scorecard.
26
88417
3963
也许某个地方有分数记录…… 哦,对了,你手里的记分卡。
01:32
Well, that leaves something to be desired.
27
92505
2252
嗯,这还不够。
01:34
All that you wrote down was that in Calchemy,
28
94841
2836
你只写下了在炼金术比赛中,
01:37
Newt-niz won, Leib-ton took second,
29
97677
2627
纽特·尼兹获胜, 里伯·顿获得第二名,
01:40
and that was the only time Magnificent Marigold’s Magical Macademy
30
100304
4004
而这也是华丽万寿菊魔法学院
01:44
got third all day.
31
104308
1919
全天唯一一次获得第三名。
01:46
Oh, and some final scores:
32
106519
2210
哦,还有总分:
01:48
one school got 22 points, and both of the others got 9.
33
108938
4463
一所学校获得了 22 分, 其他两所各获得了 9 分。
01:53
Why are you so bad at taking notes?!
34
113734
2336
你怎么这么不擅长记分呢?!
01:56
No time for self-recrimination.
35
116237
2127
没时间自责了。
01:58
The wizarding world is waiting.
36
118364
1835
整个巫师界都在等待。
02:00
Who won the tournament?
37
120616
1335
到底是谁赢了比赛?
02:01
Pause here to figure it out yourself. Answer in 3
38
121993
2502
暂停三秒,尝试自己算清楚。
02:04
Answer in 2
39
124495
2461
还有两秒
02:06
Answer in 1
40
126956
2336
最后一秒
02:09
At first, it may seem like there are an overwhelming number
41
129417
2878
一开始,比赛分数似乎有很多种
02:12
of possible scoring systems,
42
132295
1793
可能的组成形式,
02:14
so let's see if we can narrow our options.
43
134130
2627
所以我们先看看能不能缩小范围。
02:16
We can start by looking for clues in the total scores.
44
136966
3587
我们可以先在总分中寻找线索。
02:20
Every event was scored the same way,
45
140678
2419
每项赛事的计分方式相同,
02:23
so the sum of all points in the entire tournament
46
143097
2669
所以整个比赛中所有积分的总和
02:25
must be a multiple of one event’s total.
47
145808
2961
一定是某项赛事总分的倍数。
02:29
In other words, if there were three events that scored 3, 2, 1,
48
149020
4254
换句话说,如果有三项比赛, 第一到三名得分为 3、2、1,
02:33
which adds up to 6, the total points for the day would be 18,
49
153274
4504
加起来一共 6 分, 那么比赛当天的总分为 18 分,
02:37
which is three events times 6 points.
50
157862
2627
也就是三项赛事乘以 6。
02:40
Our total is 40.
51
160531
1585
已知此次比赛的总分是 40。
02:42
So we can make a table of possibilities: one event totaling 40 points,
52
162241
5047
因此,我们可以列出可能的情况: 只有一项比赛,则该项总分为 40,
02:47
two totaling 20, four totaling 10, and so on.
53
167413
3962
两项则每项比赛总分为 20, 四项则每项 10 分,以此类推。
02:51
We know there were at least three events, which eliminates these options,
54
171751
4296
我们知道至少有三项比赛 因此可以排除这些可能,
02:56
and we can also get rid of events with fewer than 6 points,
55
176172
3253
单项比赛总分小于 6 的也可以排除,
02:59
because the smallest possible total is 3 plus 2 plus 1.
56
179467
3754
因为单项比赛总分 最少为 3 加 2 加 1。
03:03
That leaves two prospects.
57
183387
2044
就剩两个选择了。
03:05
Let’s try to narrow those further by breaking down the possible points
58
185556
4046
我们尝试通过细分 每项赛事中可能的分数组合
03:09
earned in each event:
59
189602
1501
来进一步缩小范围:
03:11
if first place received 7 points,
60
191270
2544
如果第一名得 7 分,
03:13
the teams that had totals of 9 couldn’t have won an event
61
193981
3337
那么总分为 9 的队伍 一项比赛都没赢过,
03:17
because their total score would be 10 or more.
62
197318
2586
否则他们的总分 将达到 10 分以上。
03:20
That means the team with 22 would have to have won all four.
63
200029
4087
这意味着获得 22 分的队伍 赢了全部四场比赛。
03:24
But then their total would be 28, so we can eliminate that option.
64
204200
3587
但这样的话,他们的总分应该是 28, 因此我们可以排除这种可能。
03:28
And with four events, these numbers can't be made to add up to 22.
65
208079
4337
而且如果一共四项比赛, 这些数字加起来都不等于 22。
03:32
Finally, if first place got 5 points,
66
212667
2961
最后,如果第一名得 5 分,
03:35
the highest possible score with four events would be 20,
67
215628
3629
那么四项比赛都赢了 也只能获得 20 分,
03:39
getting rid of these two as well.
68
219298
2127
所以这两种可能也可以排除。
03:41
In fact, five events scoring 4 each could only reach 20 as well.
69
221634
4963
如果有五项比赛,赢一项得 4 分, 那么总分也只有 20 分。
03:46
That leaves us with just one possibility:
70
226722
2586
那么就剩一种可能了:
03:49
five events each scored 5, 2, 1.
71
229350
3712
五项比赛的第一到三名 获得的分数分别为 5、2、1 。
03:53
There’s exactly one way to make those scores add up to 22:
72
233229
3879
只有一种情况下 这些分数加起来为 22 分:
03:57
the winner finished first four times and second once.
73
237275
4337
获胜者获得第一名四次, 获得第二名一次。
04:01
The scores of 9 mean one team won once and lost four times,
74
241862
4755
总分 9 分的一支队伍 赢过一次,输了四次
04:06
and the other lost once and took second four times.
75
246659
3587
另一队输了一次,获得第二名四次。
04:10
That must be Marigold’s Macademy,
76
250329
2461
这支队伍一定是华丽万寿菊,
04:12
whose only third place finish was Calchemy based on your note.
77
252790
4087
根据你的记录,他们唯一一次第三名 是在炼金术比赛中获得的。
04:17
And Leib-ton’s second place finish in Calchemy means they scored 22
78
257044
5089
而里伯·顿在炼金术中获得第二名 意味着他们总分为 22 分,
04:22
and won the Sly Wizard Tournament.
79
262133
2210
赢得了狡猾巫师锦标赛。
04:24
You have just enough evidence to prove it, keep your job, and avert war.
80
264510
4630
你的证据刚好足以证明这一点, 你保住了工作,也避免了一场战争。
04:29
Phew!
81
269348
1001
呼!
关于本网站

这个网站将向你介绍对学习英语有用的YouTube视频。你将看到来自世界各地的一流教师教授的英语课程。双击每个视频页面上显示的英文字幕,即可从那里播放视频。字幕会随着视频的播放而同步滚动。如果你有任何意见或要求,请使用此联系表与我们联系。

https://forms.gle/WvT1wiN1qDtmnspy7