SPOJ Volume I

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{| border="1" class="sortable" Problem Link  Category  Difficulty (1-10) 1 - Life, the Universe, and Everything TEST  Simple Iteration  1 2 - Prime Generator PRIME1  Prime Sieve of Eratosthenes 3 - Substring Check (Bug Funny) SBSTR1  Esoteric Languages 4 - Transform the Expression ONP  Simple Iteration, String Parsing  3 5 - The Next Palindrome PALIN  Greedy, Simple Math  3 6 - Simple Arithmetics ARITH  Big Numbers 7 - The Bulk! BULK 8 - Complete the Sequence! CMPLS  Mathematics 9 - Direct Visibility DIRVS 10 - Complicated Expressions CMEXPR  String Parsing, Expression Manipulation 11 - Factorial FCTRL  Simple Iteration, Simple Math  2 12 - The Game of Master-Mind MMIND 13 - Hotline HOTLINE 14 - I-Keyboard IKEYB  Dynamic Programming 15 - The Shortest Path SHPATH  Shortest Path, Optimization 16 - Sphere in a tetrahedron TETRA  Solid Geometry 17 - The Bytelandian Cryptographer (Act I) CRYPTO1  Mathematics 18 - The Bytelandian Cryptographer (Act II) CRYPTO2  Esoteric Languages (Brainfuck) 19 - The Bytelandian Cryptographer (Act III) CRYPTO3  Esoteric Languages 20 - The Bytelandian Cryptographer (Act IV) CRYPTO4 22 - Triangle From Centroid TRICENTR  Planar Geometry  6 23 - Pyramids PIR  Computational Geometry 24 - Small factorials FCTRL2  Big Numbers 25 - Pouring water POUR1  Graph Theory 26 - Build the Fence BSHEEP  Convex Hull 27 - Sorting Bank Accounts SBANK  Sorting 28 - Help the Military Recruitment Office! HMRO  Data Structures 29 - Hash it! HASHIT  Data Structures 30 - Bytelandian Blingors Network BLINNET  Minimal Spanning Tree 31 - Fast Multiplication MUL  Divide and Conquer  8 32 - A Needle in the Haystack NHAY  Strings 33 - Trip TRIP  Dynamic Programming  7 34 - Run Away RUNAWAY  Geometry 35 - Equipment Box EQBOX  Geometry 36 - Secret Code CODE1 37 - The Proper Key PROPKEY 38 - Labyrinth LABYR1  Graph Theory  3 39 - Piggy-Bank PIGBANK  Dynamic Programming 40 - Lifting the Stone STONE  Computational Geometry 41 - Play on Words WORDS1  Eulerian Tour 42 - Adding Reversed Numbers ADDREV  Simple Math  1 43 - Copying Books BOOKS1  Searching 44 - Substitution Cipher SCYPHER  Sorting 45 - Commedia dell Arte COMMEDIA  Adhoc 47 - Skyscraper Floors SCRAPER  Mathematical 48 - Glass Beads BEADS  Strings 49 - Hares and Foxes HAREFOX  Mathematical 50 - Invitation Cards INCARDS  Graph Theory 51 - Fake tournament TOUR  Graph Theory 54 - Julka JULKA  Big Numbers  1