原创 【CodeForces】C. Drazil and Factorial

Problem here Problem Drazil is playing a math game with Varda. Let’s define for positive integer x as a product of

原创 【CodeForces】A. Pouring Rain

Problem here Problem A lot of people in Berland hates rain, but you do not. Rain pacifies, puts your thoughts in or

原创 【GoogleCodeJam Qualification Round 2016】Problem A. Counting Sheep

Problem here Problem Bleatrix Trotter the sheep has devised a strategy that helps her fall asleep faster. First, sh

原创 【UVa】12325 - Zombie's Treasure Chest

Problem here Problem Some brave warriors come to a lost village. They are very lucky and find a lot of treasures an

原创 【POJ】Balance

Problem here Description Gigel has a strange “balance” and he wants to poise it. Actually, the device is different

原创 【UVa】11456 - Trainsorting

Problem here Problem Erin is an engineer. She drives trains. She also arranges the cars within each train. She pref

原创 【HDU】Red and Black

Problem here Problem Description There is a rectangular room, covered with square tiles. Each tile is colored eithe

原创 【HDU】2041-超級樓梯

Problem here Problem 有一樓梯共M級,剛開始時你在第一級,若每次只能跨上一級或二級,要走上第M級,共有多少種走法? INPUT 輸入數據首先包含一個整數N,表示測試實例的個數,然後是N行數據,每行包含一個整數M

原创 【topcoder】 SRM 144 div 2 200

Problem Problem Statement Computers tend to store dates and times as single numbers which represent the number of s

原创 【USACO】Milking Cows

Problem Three farmers rise at 5 am each morning and head for the barn to milk three cows. The first farmer begins m

原创 【USACO】Transformations

Problem A square pattern of size N x N (1 <= N <= 10) black and white square tiles is transformed into another squa

原创 【CodeForces】Registration system

problem here Problem A new e-mail service “Berlandesk” is going to be opened in Berland in the near future. The sit

原创 【UVa】524 - Prime Ring Problem

Problem here Problem A ring is composed of n (even number) circles as shown in diagram. Put natural numbers 1, 2,

原创 【HDU】暢通工程

Problem Description 某省調查城鎮交通狀況,得到現有城鎮道路統計表,表中列出了每條道路直接連通的城鎮。省政府“暢通工程”的目標是使全省任何兩個城鎮間都可以實現交通(但不一定有直接的道路相連,只要互相間接通過道路可

原创 【POJ】Highways

Problem here Description The island nation of Flatopia is perfectly flat. Unfortunately, Flatopia has no public hig