SPOJ Volume IV

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203 - Potholers POTHOLE  Graph theory, maximum flow 204 - Sleepwalker SLEEP 205 - Icerink ICERINK 206 - Bitmap BITMAP  BFS  2 207 - Three-coloring of binary trees THREECOL  Dynamic Programming 208 - Store-keeper STORE 209 - The Map MAP 210 - The Altars ALTARS 211 - Primitivus recurencis PRIMIT  GRAPH THEORY 212 - Water among Cubes WATER  SORT-BFS-DFS  6 215 - Panic in the Plazas PANIC 217 - Soldiers on Parade SOPARADE 220 - Relevant Phrases of Annihilation PHRASES 224 - Vonny and her dominos VONNY 226 - Jewelry and Fashion JEWELS 227 - Ordering the Soldiers ORDERS 228 - Shamans SHAMAN 229 - Sorting is easy SORTING 231 - The Zebra Crossing ZEBRA 234 - Getting Rid of the Holidays (Act I) HOLIDAY1 235 - Very Fast Multiplication VFMUL 236 - Converting number formats ROMAN 237 - Sums in a Triangle SUMITR  Dynamic programing and Source size  3 238 - Getting Rid of the Holidays (Act II) HOLIDAY2 239 - Tour de Byteland BTOUR 241 - Arranging the Blocks BLOCKS 243 - Stable Marriage Problem STABLEMP 244 - Internally Stable Sets INTSS 245 - Square Root SQRROOT 247 - Chocolate CHOCOLA 260 - Containers CTAIN 261 - Triangle Partitioning TRIPART 262 - Connections CONNECT 263 - Period PERIOD 264 - Corporative Network CORNET 272 - Cave Exploration CAVE 274 - Johnny and the Watermelon Plantation WMELON 275 - The Water Ringroad WATERWAY 277 - City Game CTGAME 278 - Bicycle BICYCLE 279 - Interesting number INUMBER 280 - Lifts LIFTS 282 - Muddy Fields MUDDY 283 - Naptime NAPTIME 286 - Selfish Cities SCITIES 287 - Smart Network Administrator NETADMIN 288 - Prime or Not PON  Primality test 290 - Polynomial Equations POLYEQ 291 - Cube Root CUBERT 292 - Alibaba ALIBB