Oyking

摘要： 小城和小华都是热爱数学的好学生，最近，他们不约而同地迷上了数独游戏，好胜的他们想用数独来一比高低。但普通的数独对他们来说都过于简单了，于是他们向Z 博士请教，Z 博士拿出了他最近发明的“靶形数独”，作为这两个孩子比试的题目。靶形数独的方格同普通数独一样，在 9 格宽×9 格高的大九宫格中有9 个3 格宽×3 格高的小九宫格（用粗黑色线隔开的）。在这个大九宫格中，有一些数字是已知的，根据这些数字，利用逻辑推理，在其他的空格上填入1 到9 的数字。每个数字在每个小九宫格内不能重复出现，每个数字在每行、每列也不能重复出现。但靶形数独有一点和普通数独不同，即每一个方格都有一个分值， 阅读全文

摘要： DescriptionN children are living in a tree with exactly N nodes, on each node there lies either a boy or a girl. A girl is said to be protected, if th... 阅读全文

摘要： DescriptionA Sudoku grid is a 16x16 grid of cells grouped in sixteen 4x4 squares, where some cells are filled with letters from A to P (the first 16 capital letters of the English alphabet), as shown in figure 1a. The game is to fill all the empty grid cells with letters from A to P such that each l 阅读全文

摘要： DescriptionLong long ago, there lived two rabbits Tom and Jerry in the forest. On a sunny afternoon, they planned to play a game with some stones. There were n stones on the ground and they were arranged as a clockwise ring. That is to say, the first stone was adjacent to the second stone and the n- 阅读全文

摘要： DescriptionAt the end of the 200013thyear of the Galaxy era, the war between Carbon-based lives and Silicon civilization finally comes to its end with the Civil Union born from the ruins. The shadow fades away, and the new-born Union is opening a new page.Although the war ended, the affect of the wa 阅读全文

摘要： Problem DescriptionMex is a function on a set of integers, which is universally used for impartial game theorem. For a non-negative integer set S, mex... 阅读全文

摘要： DescriptionThis year, there have been many problems with population calculations, since in some cities, there are many emigrants, or the population gr... 阅读全文

摘要： DescriptionAxel and Birgit like to play a card game in which they build a house of cards, gaining (or losing) credits as they add cards to the house. ... 阅读全文

摘要： DescriptionThere are N points in total. Every point moves in certain direction and certain speed. We want to know at what time that the largest distance between any two points would be minimum. And also, we require you to calculate that minimum distance. We guarantee that no two points will move in 阅读全文

摘要： DescriptionN soldiers from the famous "*FFF* army" is standing in a line, from left to right. o o o o o o o o o o o o o o o o o o /F\ /F\ /F\ /F\ /F\ /F\ /F\ /F\ /F\ /F\ /F\ /F\ /F\ /F\ /F\ /F\ /F\ /F\ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ ... 阅读全文