Morris' Blog 我在摸索我存在的意義、生命的意義、內涵及價值。 沒有真正神手般的厲害，套用模式是大部分的情況。 沒那麼厲害的我存在的意義為何，襯托出神的存在？ 有時候不能怪別人不給我機會，我已經開始省思， 為什麼我沒有給別人機會的原因，而是全要靠別人。 有時候我認為我與眾不同，那是因為我做不到很多人能辦到的事情。 我聽不到、玩不起來、說得不夠明瞭、理解得不夠多， 我缺少的語文能力，就是一切一切無能的判定。 為此，我不曉得能做些對別人有幫助的事情。 我知道我自己是個不服輸的性格，但現在我不得不認輸。 我沒有能力，因此我必須認輸。 我到底來這世界作什麼？處處充滿不確定性， 而我總是無法出類拔萃，想當個一般人似乎也回不了頭了。 越強大的挑戰需要越強力的支持，而我的支持是什麼？ 最近嘗試與人談話，但都是失敗的結局，沒人能接受， 不需要言語，不需要溝通，一切所想都表達不出來。

49愛的鼓勵 6訂閱站台

Problem D

Submarines

Input: standard input

Output: standard output

Time Limit: 5 seconds

Memory Limit: 32 MB

The Russian navy has, as you probably know, had some problems with their submarines in Swedish waters. These problems are very embarrassing for the Russian military, who has decided to do something about it.

As a first step in their plan, they want to construct a program for their centre of command to be able to locate their submarines. From GPSes (Global Positioning Systems) they are able to get X and Y coordinates for the front and rear points of all submarines. The Russian intelligence has in addition provided data for all islands in the Swedish waters. With this information, and with a lot of help from simulations using GPS equipped minks, Russian programmers have been able to develop a program that, from the information given, tells the user if a submarine is

1. Still in water

2. Partially on land

3. Entirely on Land

The Input

• First you will get the number of submarines that are present in the area. [1..100]

• After that, for each submarine, you will get the X and Y positions first for the submarines    

  front and then for its rear. [-1000..1000]

• Then you will get the number of islands in the area. [1..50]

  After that, for each island you will get the following:

• The number of points of the polygon that represents the island. [3..20]

• The X and Y positions of the points. [-1000..1000].

Input rules

All input are integers.

No submarine end point will be on an island edge.

No submarine will lie on an island edge.

All islands are simple polygons without crossing edges or touching borders.

The first point of the island is connected to the last point.

All submarines are approximated with a line between the front and rear points.

Two islands never overlap or touch each other.

The Output

Output contains information about every submarine, in order.

If the submarine is all in water, print “Submarine X is still in water.”

If the submarine is all on land, print “Submarine X is completely on land.”

If the submarine is partially in water and partially on land, print “Submarine X is partially on land.”

X is the submarine’s number (1, 2, 3…) according to its order in the input file.

Sample Input (See image)

5

11 11 9 9

0 0 4 0

0 1 10 1

0 6 6 0

0 -10 0 -9

2

4

-5 -5

5 -5

5 5

-5 5

3

-2 -8

-1 -9

-2 -10

Output for Sample Input

Submarine 1 is still in water.

Submarine 2 is completely on land.

Submarine 3 is partially on land.

Submarine 4 is partially on land.

Submarine 5 is still in water.

Swedish National Contest

很容易忘記的情況，如下。

tricky test case

1
1 3 5 3
1
8
0 0
0 4
2 4
2 2
4 2
4 4
6 4
6 0

基本上就沒有什麼好講的了。