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            隨筆-19  評(píng)論-1  文章-0  trackbacks-0

            FOJ

            Hotter Colder

            http://acm.fzu.edu.cn/problem.php?pid=1014

            求線段的中位線,線段相交求交點(diǎn),求凸多邊形的面積,

            無歸之室

            http://acm.fzu.edu.cn/problem.php?pid=1016

            本題精度要求非常高,用三角函數(shù)的話,很容易就wa..

            Reflections

            http://acm.fzu.edu.cn/problem.php?pid=1035

            求一條射線遇到圓后的反射光,

            即圓和直線求交點(diǎn),求點(diǎn)關(guān)于交點(diǎn)法線的對(duì)稱點(diǎn)。

            Pipe

            http://acm.fzu.edu.cn/problem.php?pid=1088

            求一條光線從管道口進(jìn)入,最遠(yuǎn)能達(dá)到多遠(yuǎn)。

            判斷線段左右位置關(guān)系,求線段相交交點(diǎn)。

            A Pilot in Danger!

            http://acm.fzu.edu.cn/problem.php?pid=1120

            判斷點(diǎn)在區(qū)域內(nèi)

            Area in Triangle

            http://acm.fzu.edu.cn/problem.php?pid=1195

            在三角形內(nèi)的氣球膨脹,求膨脹后的面積。

            分情況推公式

            Triangle

            http://acm.fzu.edu.cn/problem.php?pid=1302

            在給定的n 1<=n<=50000)個(gè)點(diǎn)中,取3個(gè)點(diǎn)組成三角形,求面積最大。

            顯然這3個(gè)點(diǎn)在凸包上,點(diǎn)集凸包化+凸包上的點(diǎn)k^2(原來要k^3的,利用某些性質(zhì)剪枝,降到k^2).

            Area

            http://acm.fzu.edu.cn/problem.php?pid=1329

            Pick定理

            Center of Gravity

            http://acm.fzu.edu.cn/problem.php?pid=1330

            已知半徑,角度的扇形,求其重心到圓心的距離。

            Stone

            http://acm.fzu.edu.cn/problem.php?pid=1331

            求多邊形的重心

            Surround the Trees

            http://acm.fzu.edu.cn/problem.php?pid=1333

            凸包

            Star not a Tree?

            http://acm.fzu.edu.cn/problem.php?pid=1355

            費(fèi)馬點(diǎn)

            Coplanar Points

            http://acm.fzu.edu.cn/problem.php?pid=1393

            利用差積判斷4點(diǎn)共面。

            長方形的并的面積

            http://acm.fzu.edu.cn/problem.php?pid=1407

            離散化

            Common Area

            http://acm.fzu.edu.cn/problem.php?pid=1472

            三角形和圓的共同面積。

            彈弓

            http://acm.fzu.edu.cn/problem.php?pid=1482

            n(1<=n<=700)個(gè)點(diǎn)中,最多有多少個(gè)點(diǎn)在同一條直線上。

            牧場

            http://acm.fzu.edu.cn/problem.php?pid=1485

            n(2<=n<=100)個(gè)點(diǎn)中,取其中部分點(diǎn)組成的一個(gè)凸多邊形,求這樣的凸多邊形的最大頂點(diǎn)數(shù).

            Oaiei's Trouble

            http://acm.fzu.edu.cn/problem.php?pid=1510

            圖形學(xué)中的直線剪裁算法,可以用計(jì)算幾何中的點(diǎn)和線段的關(guān)系,線段和線段的求交點(diǎn)來求解。

            Defense the country

            http://acm.fzu.edu.cn/problem.php?pid=1338

            Treasure Hunt

            http://acm.fzu.edu.cn/problem.php?pid=1332

            線段相交

            Minkowski Sum

            http://acm.fzu.edu.cn/problem.php?pid=1379

            Area Ratio

            http://acm.fzu.edu.cn/problem.php?pid=1382

            求三角形的內(nèi)切圓,外接圓

            Video Surveillance

            http://acm.fzu.edu.cn/problem.php?pid=1032

            簡單題

            最大可分離值問題

            http://acm.fzu.edu.cn/problem.php?pid=1201

             

            POJ

            http://acm.pku.edu.cn/JudgeOnline/  
            這些題的解題報(bào)告
            http://old.blog.edu.cn/user3/Hailer/archives/2008/2158935.shtml

            1031 Fence

            1039 Pipe

            1092 Farmland

            1106 Transmitters

            1113 Wall

            1118 Lining Up

            1133 Stars

            1151 Atlantis

            1225 STRICTLY INSCRIBED SIMILAR TRIANGLES

            1259 The Picnic

            1263 Reflections

            1265 Area

            1266 Cover an Arc.

            1269 Intersecting Lines

            1271 Nice Milk

            1279 Art Gallery

            1294 Not Too Convex Hull

            1319 Pipe Fitters

            1347 Triangle

            1361 JaWs

            1375 Intervals

            1379 Run Away

            1389 Area of Simple Polygons

            1408 Fishnet

            1410 Intersection

            1418 Viva Confetti

            1428 Hermes' Colony

            1434 Fill the Cisterns!

            1444 Parallelepiped walk

            1471 Triangles

            1473 There's Treasure Everywhere!

            1494 Sunrise

            1499 Supercomputer Selection, The Sequel

            1500 Polygonal Puzzle

            1514 Metal Cutting

            1518 Problem Bee

            1536 Trains

            1556 The Doors

            1569 Myacm Triangles

            1584 A Round Peg in a Ground Hole

            1586 Three Sides Make a Triangle

            1605 Horse Shoe Scoring

            1610 Quad Trees

            1623 Squadtrees

            1624 This Takes the Cake

            1645 BSP Trees

            1654 Area

            1660 Princess FroG

            1673 EXOCENTER OF A TRIANGLE

            1685 Color Tunnels

            1687 Buggy Sat

            1688 Dolphin Pool

            1693 Counting Rectangles

            1696 Space Ant

            1727 Advanced Causal Measurements (ACM)

            1758 Frontier

            1765 November Rain

            1774 Fold Paper Strips

            1803 Box Art

            1810 Covering

            1813 Overlapped Shapes

            1819 Disks

            1834 線段處理

            1843 Shire

            1851 Map

            1871 Bullet Hole

            1873 The Fortified Forest

            1875 Robot

            1877 Flooded!

            1881 Sail Race

            1899 Farmer Bill's Problem

            1902 Illumination

            1912 A highway and the seven dwarfs

            1921 Paper Cut

            1927 Area in Triangle

            1931 Biometrics

            1937 Balanced Food

            1939 Diplomatic License

            1940 Polygon Programming with Ease

            1956 Pumps and Pipes

            1971 Parallelogram Counting

            1981 Circle and Points

            1982 Water Tank

            2007 Scrambled Polygon

            2012 Triangle Cuts

            2016 Ink Blots

            2026 As the Crow Flies

            2031 Building a Space Station

            2036 I Conduit!

            2043 Area of Polygons

            2048 Monster Trap

            2053 Square

            2066 Minimax Triangulation

            2069 Super Star

            2074 Line of Sight

            2079 Triangle

            2087 Petanque

            2098 Ellipse

            2130 Jogging

            2149 Inherit the Spheres

            2150 Crossing Prisms

            2164 Find the Border

            2165 Gunman

            2172 Bricks

            2177 Ghost Busters

            2284 That Nice Euler Circuit

            2621 Parallelepiped

            2622 Convex hull

            2686 Traveling by Stagecoach

            2687 Earth Observation with a Mobile Robot Team

            2747 Shy Polygons

            2839 Convex Hull and Triangle

            2932 Coneology

            2954 Triangle

            3011 Secrets in Shadows

            3129 How I Wonder What You Are!

            3130 How I Mathematician Wonder What You Are!

            3135 Polygons on the Grid

            3334 Connected Gheeves

            3335 Rotating Scoreboard

            3347 Kadj Squares

            3384 Feng Shui

            3407 Brookebond s'en va en guerre...

            3410 Split convex polygon

            3608 Bridge Across Islands

             

            ZOJ

            zoj相關(guān)練習(xí)題

             

            1597 1608 1648 1683

            1910 2102 2157 2318

            2335 2347 2352 2361

            2370 2375 2403

             

            2015(中歐1999正賽)

            2107(浙江2004省賽)

            2228(北京2004預(yù)賽題,)

            2234(北京2004預(yù)賽題)

            2214(北京2004正賽題,費(fèi)馬點(diǎn),知道該知識(shí)點(diǎn)=〉易解,否則=〉不可能)

            2394(上海2004正賽題)

             

            主要內(nèi)容(仔細(xì)核對(duì),看看自己哪些未掌握):

             

            判斷線段相交;

            判斷直線相交;

            判斷點(diǎn)是否在多邊形內(nèi);

            求凸包;

            凸多邊形面積計(jì)算;

            矩形的交與并(掃描法);

            已知三點(diǎn)求三角形面積(包括海倫公式)和重心;

            已知三點(diǎn)求外接圓和內(nèi)接圓圓心、半徑、面積 ;

            最近點(diǎn)對(duì)問題;

            最遠(yuǎn)點(diǎn)對(duì)問題;

            點(diǎn)集或圖形集合的最小覆蓋圓;

            點(diǎn)集或圖形集合的最小覆蓋矩形;

            三角剖分;

            費(fèi)爾馬點(diǎn)的計(jì)算;

            posted on 2010-10-12 17:36 孟起 閱讀(692) 評(píng)論(0)  編輯 收藏 引用 所屬分類: 計(jì)算幾何
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