LYHVOYAGE的专栏

Marvelous Mazes Your mission, if you decide to accept it, is to create a maze drawing program. A maze will consist of the alphabetic characters A-Z, * (asterisk), and spaces. Input and Output Y

Counting The Problem Gustavo knows how to count, but he is now learning how write numbers. As he is a very good student, he already learned 1, 2, 3 and 4. But he didn't realize yet tha

Factovisors The factorial function, n! is defined thus for n a non-negative integer: 0! = 1 n! = n * (n-1)! (n > 0) We say that a divides b if there exists an integer k such that k*a =

Summation of Four Primes Input: standard input Output: standard output Time Limit: 4 seconds Euler proved in one of his classic theorems that prime numbers are infinite in number. But can every nu

Smith Numbers Background While skimming his phone directory in 1982, Albert Wilansky, a mathematician of Lehigh University , noticed that the telephone number of his brother-in-law H. Smith had

Marbles Input: standard input Output: standard output I have some (say, n) marbles (small glass balls) and I am going to buy some boxes to store them. The boxes are of two types: Type 1: each

Problem H Morning Walk Time Limit 3 Seconds Kamalis a Motashotaguy. He has got a new job in Chittagong. So, he has moved to Chittagong fromDinajpur. He was getting fatter i

Knight Tournament time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output Hooray! Berl II, the king of Berland is m

History Grading  Background Many problems in Computer Science involve maximizing some measure according to constraints. Consider a history exam in which students are asked to put severa

Just the Facts The expression N!, read as ``N factorial," denotes the product of the first N positive integers, where N is nonnegative. So, for example, N N! 0 1 1 1

Frequent values          TimeLimit:3000Ms You are given a sequence of n integers a1 , a2 , ... , an in non-decreasing order. In addition to that, you are given several queries consisting of indices

Morley’s Theorem Input: Standard Input Output: Standard Output  Morley’s theorem states that that the lines trisecting the angles of an arbitrary plane triangle meet at the vertices of an equilat

Homer Simpson Time Limit: 3 seconds Memory Limit: 32 MB Homer Simpson, a very smart guy, likes eating Krusty-burgers. It takes Homer m minutes to eat a Krusty- burger. However

Crossed Ladders Input: Standard Input Output: Standard Output Time Limit: 1 Second   A narrow street is lined with tall buildings. An x foot long ladder is rested at the base of the building on

Send a Table Input: Standard Input Output: Standard Output   When participating in programming contests, you sometimes face the following problem: You know how to calcutale the output for the give

Rotating Sentences In ``Rotating Sentences,'' you are asked to rotate a series of input sentences 90 degrees clockwise. So instead of displaying the input sentences from left to right and top t

Hangman Judge In ``Hangman Judge,'' you are to write a program that judges a series of Hangman games. For each game, the answer to the puzzle is given as well as the guesses. Rules are the same as

216 - Getting in Line Computer networking requires that the computers in the network be linked. This problem considers a ``linear" network in which the computers are chained together so that eac

ID Codes It is 2084 and the year of Big Brother has finally arrived, albeit a century late. In order to exercise greater control over its citizens and thereby to counter a chronic breakdown in law an

657 - The die is cast InterGames is a high-tech startup company that specializes in developing technology that allows users to play games over the Internet. A market analysis has alerted them to th

Ecological Bin Packing  Background Bin packing, or the placement of objects of certain weights into different bins subject to certain constraints, is an historically interesting problem.

Longest Common Subsequence Sequence 1:                 Sequence 2:                 Given two sequences of characters, print the length of the longest common subsequence of both sequences. For

Closest Sums Input: standard input Output: standard output Time Limit: 3 seconds   Given is a set of integers and then a sequence of queries. A query gives you a number and asks to find a sum of

Jill Rides Again  Jill likes to ride her bicycle, but since the pretty city of Greenhills where she lives has grown, Jill often uses the excellent public bus system for part of her journey.

Longest Run on a Snowboard Input: standard input Output: standard output Time Limit: 5 seconds Memory Limit: 32 MB   Michael likes snowboarding. That's not very surprising, since snowboarding is

Carmichael Numbers  An important topic nowadays in computer science is cryptography. Some people even think that cryptography is the only important field in computer science, and that life

题目链接：https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=660 TimeLimit: 3.000 seconds A Sudoku grid is a 16 x 16 grid of cells grouped in sixteen