Welcome to ZOJ
Information
Select Problem
Runs
Ranklist
ZOJ Problem Set Vol 4
Vol 1   Vol 2   Vol 3   Vol 4   Vol 5   Vol 6   Vol 7   Vol 8   Vol 9   Vol 10   Vol 11   Vol 12   Vol 13   Vol 14   Vol 15   Vol 16   Vol 17   Vol 18   Vol 19   Vol 20   Vol 21   Vol 22   Vol 23   Vol 24   Vol 25   Vol 26   Vol 27   Vol 28   Vol 29   Vol 30   Vol 31  
ID Title Ratio (AC/All)
1301 The New Villa 32.27% (607/1881)
1302 Ships 24.56% (57/232)
1303 Jury Compromise 20.70% (281/1357)
1304 Tin Cutter 23.05% (71/308)
1305 FORCAL 27.64% (34/123)
1306 L-system 9.57% (25/261)
1307 Packets 33.58% (1013/3016)
1308 Crosswords 23.50% (55/234)
1309 Intervals 29.04% (70/241)
1310 Robot 27.69% (272/982)
1311 Network 40.09% (1052/2624)
1312 Prime Cuts 32.55% (2283/7012)
1313 Gears on a Board 11.64% (22/189)
1314 Uniform Generator 40.40% (1800/4455)
1315 Excuses, Excuses! 38.33% (835/2178)
1316 Station Balance 22.93% (50/218)
1317 Centipede Collisions 24.00% (18/75)
1318 Table 10.67% (22/206)
1319 Black Box 30.15% (465/1542)
1320 DEL Command 15.95% (30/188)
1321 Parallelepiped Walk 22.98% (77/335)
1322 Random Number 14.47% (11/76)
1323 Moscow Time 24.82% (36/145)
1324 Unix ls 19.55% (264/1350)
1325 Palindromes 36.47% (1007/2761)
1326 M*A*S*H 41.21% (549/1332)
1327 Postscript 26.01% (32/123)
1328 Radar Scopes 3.90% (5/128)
1329 Message Routing 15.49% (11/71)
1330 DNA Translation 19.27% (37/192)
1331 Perfect Cubes 43.11% (3975/9220)
1332 A Puzzling Problem 39.81% (88/221)
1333 Galactic Import 42.24% (218/516)
1334 Basically Speaking 39.80% (2572/6462)
1335 Letter Sequence Analysis 21.87% (42/192)
1336 Mark-up 30.20% (58/192)
1337 Pi 45.92% (3502/7625)
1338 Up and Down Sequences 47.79% (1129/2362)
1339 Machined Surfaces 55.85% (453/811)
1340 Sunrise 28.94% (22/76)
1341 LED Test 41.81% (69/165)
1342 Word Index 61.35% (978/1594)
1343 Molecules 40.24% (33/82)
1344 A Mazing Problem 24.76% (984/3973)
1345 Best Deal 29.11% (46/158)
1346 Comparing Your Heroes 46.48% (317/682)
1347 Determine the Price 17.83% (265/1486)
1348 Enjoy Collisions 11.26% (8/71)
1349 Four Quarters 46.86% (217/463)
1350 The Drunk Jailer 65.16% (5671/8703)
1351 L-I-N-G-O: lingo 21.26% (158/743)
1352 Number Base Conversion 45.02% (380/844)
1353 Unimodal Palindromic Decompositions 43.10% (538/1248)
1354 Extended Lights Out 50.85% (538/1058)
1355 Dehuff 24.74% (24/97)
1356 Picture Puzzle 11.66% (14/120)
1357 Strictly Inscribed Similar Triangles 13.33% (8/60)
1358 Moving Object Recognition 15.23% (76/499)
1359 Random Walk 29.78% (56/188)
1360 Radar Installation 27.57% (1098/3982)
1361 Holedox Moving 23.74% (739/3112)
1362 Game Prediction 49.71% (1295/2605)
1363 Chocolate 37.53% (441/1175)
1364 Machine Schedule 44.89% (923/2056)
1365 Mileage Bank 53.62% (2867/5346)
1366 Cash Machine 36.38% (2298/6315)
1367 Beer Land 32.35% (55/170)
1368 BOAT 14.91% (34/228)
1369 Art Gallery 45.61% (104/228)
1370 Game 21.23% (24/113)
1371 MANAGER 32.30% (115/356)
1372 Networking 48.88% (1472/3011)
1373 Sly Number 28.12% (36/128)
1374 Substrings 40.41% (586/1450)
1375 Pass-Muraille 30.70% (105/342)
1376 RoboContest 54.90% (28/51)
1377 Grandpa's Estate 31.96% (195/610)
1378 The Alphabet Game 32.25% (50/155)
1379 Wild Domains 25.31% (20/79)
1380 Microfiches 22.75% (33/145)
1381 Street Crossing 16.47% (14/85)
1382 A Simple Task 47.85% (4993/10434)
1383 Binary Numbers 36.30% (6201/17081)
1384 Alice and Bob 16.71% (55/329)
1385 Binary Stirling Numbers 32.52% (188/578)
1386 Calendar of Maya 25.78% (49/190)
1387 Decoding Morse Sequences 37.96% (770/2028)
1388 Exchanges 34.23% (89/260)
1389 Fill the Cisterns! 42.28% (318/752)
1390 Gates 27.20% (37/136)
1391 Horizontally Visible Segments 29.29% (288/983)
1392 The Hardest Problem Ever 56.22% (3076/5471)
1393 Rubik's Cube Solver 40.74% (44/108)
1394 Polar Explorer 27.86% (1689/6062)
1395 Door Man 37.81% (425/1124)
1396 The Umbrella Problem: 2054 46.47% (33/71)
1397 Blue Gene, Jr. 43.33% (65/150)
1398 Byte Me! 32.29% (31/96)
1399 World's Worst Bus Schedule 37.14% (65/175)
1400 Programmer, Rank Thyself 36.26% (243/670)
Search Problems: