ID Problem Show tags Hide tags AC / Tried Difficulty
850 codeforces#P1746G  Olympiad Training 0 / 0 10
843 codeforces#P1748B  Diverse Substrings 0 / 0 4
842 codeforces#P1748C  Zero-Sum Prefixes 0 / 0 5
838 codeforces#P1749A  Cowardly Rooks 0 / 0 3
836 codeforces#P1749C  Number Game 0 / 0 4
832 codeforces#P1750A  Indirect Sort 0 / 0 3
831 codeforces#P1750B  Maximum Substring 0 / 0 3
830 codeforces#P1750C  Complementary XOR 0 / 0 4
809 codeforces#P1759A  Yes-Yes? 0 / 0 3
802 codeforces#P1760A  Medium Number 0 / 0 3
801 codeforces#P1760B  Atilla's Favorite Problem 0 / 0 3
800 codeforces#P1760C  Advantage 0 / 0 3
799 codeforces#P1760D  Challenging Valleys 0 / 0 3
794 codeforces#P1761B  Elimination of a Ring 0 / 0 3
786 codeforces#P1762B  Make Array Good 0 / 0 3
779 codeforces#P1763B  Incinerate 0 / 0 4
777 codeforces#P1763D  Valid Bitonic Permutations 0 / 0 8
757 codeforces#P1765H  Hospital Queue 0 / 0 8
756 codeforces#P1765I  Infinite Chess 0 / 0 10
753 codeforces#P1765L  Project Manager 0 / 0 9
750 codeforces#P1766A  Extremely Round 0 / 0 3
749 codeforces#P1766B  Notepad# 0 / 0 3
748 codeforces#P1766C  Hamiltonian Wall 0 / 0 4
744 codeforces#P1767A  Cut the Triangle 0 / 0 3
736 codeforces#P1768C  Elemental Decompress 0 / 0 4
729 codeforces#P1770D  Koxia and Game 0 / 0 7
720 codeforces#P1771E  Hossam and a Letter 0 / 0 9
717 codeforces#P1773B  BinCoin 0 / 0 8
710 codeforces#P1773I  Interactive Factorial Guessing 0 / 0 9
703 codeforces#P1774D  Same Count One 0 / 0 5
701 codeforces#P1774F1  Magician and Pigs (Easy Version) 0 / 0 9
700 codeforces#P1774F2  Magician and Pigs (Hard Version) 0 / 0 10
697 codeforces#P1775A1  Gardener and the Capybaras (easy version) 0 / 0 3
692 codeforces#P1775E  The Human Equation 0 / 0 7
670 codeforces#P1778A  Flip Flop Sum 0 / 0 3
648 codeforces#P1781C  Equal Frequencies 0 / 0 5
646 codeforces#P1781E  Rectangle Shrinking 0 / 0 8
638 codeforces#P1783D  Different Arrays 0 / 0 7
635 codeforces#P1783G  Weighed Tree Radius 0 / 0 10
628 codeforces#P1786A1  Non-alternating Deck (easy version) 0 / 0 3
627 codeforces#P1786A2  Alternating Deck (hard version) 0 / 0 3
622 codeforces#P1787D  Game on Axis 0 / 0 6
620 codeforces#P1787F  Inverse Transformation 0 / 0 9
616 codeforces#P1788A  One and Two 0 / 0 3
615 codeforces#P1788B  Sum of Two Numbers 0 / 0 3
611 codeforces#P1788F  XOR, Tree, and Queries 0 / 0 9
609 codeforces#P1789B  Serval and Inversion Magic 0 / 0 3
608 codeforces#P1789C  Serval and Toxel's Arrays 0 / 0 5
607 codeforces#P1789D  Serval and Shift-Shift-Shift 0 / 0 8
606 codeforces#P1789E  Serval and Music Game 0 / 0 9
605 codeforces#P1789F  Serval and Brain Power 0 / 0 10
604 codeforces#P1790A  Polycarp and the Day of Pi 0 / 0 3
602 codeforces#P1790C  Premutation 0 / 0 3
597 codeforces#P1791A  Codeforces Checking 0 / 0 3
596 codeforces#P1791B  Following Directions 0 / 0 3
595 codeforces#P1791C  Prepend and Append 0 / 0 3
579 codeforces#P1793D  Moscow Gorillas 0 / 0 6
577 codeforces#P1793F  Rebrending 0 / 0 10
572 codeforces#P1794E  Labeling the Tree with Distances 0 / 0 9
571 codeforces#P1795A  Two Towers 0 / 0 3
569 codeforces#P1795C  Tea Tasting 0 / 0 5
564 codeforces#P1796A  Typical Interview Problem 0 / 0 3
563 codeforces#P1796B  Asterisk-Minor Template 0 / 0 3
558 codeforces#P1797A  Li Hua and Maze 0 / 0 3
555 codeforces#P1797D  Li Hua and Tree 0 / 0 6
552 codeforces#P1798A  Showstopper 0 / 0 3
551 codeforces#P1798B  Three Sevens 0 / 0 3
546 codeforces#P1799A  Recent Actions 0 / 0 3
541 codeforces#P1799E  City Union 0 / 0 8
537 codeforces#P1800A  Is It a Cat? 0 / 0 3
529 codeforces#P1800G  Symmetree 0 / 0 8
521 codeforces#P1802A  Likes 0 / 0 3
520 codeforces#P1802B  Settlement of Guinea Pigs 0 / 0 3
518 codeforces#P1804B  Vaccination 0 / 0 3
516 codeforces#P1804D  Accommodation 0 / 0 7
513 codeforces#P1804G  Flow Control 0 / 0 10
506 codeforces#P1805F1  Survival of the Weakest (easy version) 0 / 0 10
497 codeforces#P1807A  Plus or Minus 0 / 0 3
495 codeforces#P1807C  Find and Replace 0 / 0 3
494 codeforces#P1807D  Odd Queries 0 / 0 3
493 codeforces#P1807E  Interview 0 / 0 4
492 codeforces#P1807F  Bouncy Ball 0 / 0 5
491 codeforces#P1807G1  Subsequence Addition (Easy Version) 0 / 0 3
490 codeforces#P1807G2  Subsequence Addition (Hard Version) 0 / 0 3
489 codeforces#P1808A  Lucky Numbers 0 / 0 3
487 codeforces#P1808C  Unlucky Numbers 0 / 0 6
482 codeforces#P1809A  Garland 0 / 0 3
478 codeforces#P1809E  Two Tanks 0 / 0 9
477 codeforces#P1809F  Traveling in Berland 0 / 0 9
466 codeforces#P1811B  Conveyor Belts 0 / 0 3
464 codeforces#P1811D  Umka and a Long Flight 0 / 0 5
462 codeforces#P1811F  Is It Flower? 0 / 0 7
458 codeforces#P1812B  Was it Rated? 0 / 0 (None)
453 codeforces#P1812G  Colour Vision 0 / 0 (None)
449 codeforces#P1814A  Coins 0 / 0 3
442 codeforces#P1815B  Sum Graph 0 / 0 7
432 codeforces#P1817D  Toy Machine 0 / 0 10
429 codeforces#P1818A  Politics 0 / 0 3
426 codeforces#P1819B  The Butcher 0 / 0 6
425 codeforces#P1819C  The Fox and the Complete Tree Traversal 0 / 0 9

Categories

Lucky

Pick a problem randomly based on the current filter.