ID 题目 显示标签 隐藏标签 AC / 尝试 难度
3086 OHANIBTR   Ohani And Binary Search Tree 0 / 0 (无)
3257 OHANIGAME   Ohani And The Game 0 / 0 (无)
3085 OHANISER   Ohani And The Series 0 / 0 (无)
637 OIL   Toil for Oil 0 / 0 (无)
743 OILCOMP   Oil Company 0 / 0 (无)
1702 OKRET   Okret 0 / 0 (无)
1492 OLOLO   Onotole needs your help 0 / 0 (无)
3431 OMWG   One more weird game 0 / 0 (无)
2115 ONBRIDGE   Online Bridge Searching 0 / 0 (无)
574 ONEINSTR   One Instruction Computer Simulator 0 / 0 (无)
2444 ONEXLIS   One X LIS 0 / 0 (无)
232 ONEZERO   Ones and zeros 0 / 0 (无)
3845 ONORIVER1   Ono at the river 1 0 / 0 (无)
4 ONP   Transform the Expression 0 / 0 (无)
1428 ONTIME   Just on Time 0 / 0 (无)
2810 OPBIT   Operation Bits 0 / 0 (无)
2273 OPCPIZZA   Pizzamania 0 / 0 (无)
2288 OPCTRIP   The Trip 0 / 0 (无)
3722 OPMODULO   "Operation - Modulo" 0 / 0 (无)
963 OPTCUT   Chặt cây 0 / 0 (无)
334 OPTM   Optimal Marks 0 / 0 (无)
415 OPTSUB   Optimal Connected Subset 0 / 0 (无)
165 ORDERS   Ordering the Soldiers 0 / 0 (无)
773 ORDERSET   Order statistic set 0 / 0 (无)
3422 ORDSUM23   Sums of 2 and 3 0 / 0 (无)
2768 ORGNZ   Organizator 0 / 0 (无)
386 ORIGLIFE   Origin of Life 0 / 0 (无)
817 OROSNAKE   Ouroboros Snake 0 / 0 (无)
525 ORZ   Nuclear Plants 0 / 0 (无)
1532 OSPROB1   Operating System Problems (Task Scheduling) 0 / 0 (无)
988 OTOCI   OTOCI 0 / 0 (无)
2020 OTOY1   One Theorem, One Year 0 / 0 (无)
2720 OU7   Fone Frequencies 0 / 0 (无)
3226 OVERLAP   Overlapping Words 0 / 0 (无)
3776 OVGDEL   Good Elements 0 / 0 (无)
3788 OVICUMSUM   A Cumulative Sum Problem 0 / 0 (无)
3789 OVISLARSUM   Large Sum 0 / 0 (无)
2416 OVOXO   Tic-tac-toe 3 0 / 0 (无)
1118 PA06ANT   Ant 0 / 0 (无)
1722 PAAAARTY   Party! 0 / 0 (无)
2253 PACKRECT   Packing Rectangles 0 / 0 (无)
850 PAGAIN   Prime Again 0 / 0 (无)
737 PAINTBLC   Painting Blocks (Act II) 0 / 0 (无)
736 PAINTBLK   Painting Blocks (Act I) 0 / 0 (无)
130 PAINTTMP   Paint templates 0 / 0 (无)
1803 PAINTWAL   Paint on a Wall 0 / 0 (无)
3362 PAIRDIV2   Pair Divisible 2 0 / 0 (无)
1147 PAIRGRPH   A Pair of Graphs 0 / 0 (无)
301 PAIRINT   Pairs of Integers 0 / 0 (无)
1168 PAIRSORT   Double Sorting 0 / 0 (无)
1828 PAIRSUM   Sum of Pairwise Products 0 / 0 (无)
385 PALACE   Accomodate the palace 0 / 0 (无)
907 PALDR   Even Palindrome 0 / 0 (无)
765 PALIM   Yet Another Longest Palindrome Problem 0 / 0 (无)
5 PALIN   The Next Palindrome 0 / 0 (无)
1934 PALINDNA   Palindromic DNA 0 / 0 (无)
3711 PALMKR   Palindrome Maker 0 / 0 (无)
756 PALNUM   Palindromic Number 0 / 0 (无)
3815 PALOVE   Pandas are the best Lovers 0 / 0 (无)
3360 PALPRIM   Palindromic Primes (Hard) 0 / 0 (无)
129 PALSEC   Choosing a Palindromic Sequence 0 / 0 (无)
2988 PAML   Popeye and the magical land 0 / 0 (无)
1429 PANCAKES   Delicious Pancakes 0 / 0 (无)
160 PANIC   Panic in the Plazas 0 / 0 (无)
1214 PARADOX   Paradox 0 / 0 (无)
3604 PARAG   Paragliding Trip 0 / 0 (无)
2620 PARCARD1   Partition function (EASY) 0 / 0 (无)
2621 PARCARD2   Partition function (HARD) 0 / 0 (无)
2018 PAREN   COUNT PAREN 0 / 0 (无)
845 PARITY   Parity 0 / 0 (无)
1613 PARKET1   PARKET 0 / 0 (无)
792 PARKINGL   Parking Lot 0 / 0 (无)
1949 PARSUMS   Nonnegative Partial Sums 0 / 0 (无)
115 PARTIT   Partition 0 / 0 (无)
1343 PARTPAL   Partial Palindrome 0 / 0 (无)
283 PARTPALI   Particular Palindromes 0 / 0 (无)
1597 PARTPLNE   Partitioning the plane 0 / 0 (无)
392 PARTSUM   Partial Sums 0 / 0 (无)
87 PARTY   Party Schedule 0 / 0 (无)
723 PARTY2   Party of Cloaked Killers 0 / 0 (无)
2486 PARTYTIM   Party Time 0 / 0 (无)
851 PATHEADS   Patting Heads 0 / 0 (无)
3371 PATHGAME   Path Game 0 / 0 (无)
1718 PATT   Pattern Matching 0 / 0 (无)
1208 PATULJCI   Snow White and the N dwarfs 0 / 0 (无)
3180 PAUL2   A conjecture of Paul Erdős (hard) 0 / 0 (无)
2982 PAUWS   Pair and unpair weightest string 0 / 0 (无)
108 PAYING   Paying in Byteland 0 / 0 (无)
355 PB   Parking Bay 0 / 0 (无)
2354 PBBN2   Print Big Binary Numbers 0 / 0 (无)
1239 PBCGAME   PBCGAME 0 / 0 (无)
1403 PBOARD   Blocks for kids 0 / 0 (无)
1461 PC8C   Cave Crisis 0 / 0 (无)
1462 PC8F   Optimal Strategy for the ICPC 0 / 0 (无)
1426 PC8H   Repair Depots 0 / 0 (无)
3312 PCLNMBR   Peculiar Number 0 / 0 (无)
3034 PCOPTRIP   Counting Pairwise Coprime Triples 0 / 0 (无)
2396 PCPC12D   New Strategy 0 / 0 (无)
2397 PCPC12E   Snakes and Ladders 0 / 0 (无)
2398 PCPC12F   Snakes and Ladders Again 0 / 0 (无)

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