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C. Misha and Forest time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Let's define a forest as a non-directed

E. Zebra Tower time limit per test 1.5 seconds memory limit per test 256 megabytes input standard input output standard output Little Janet likes playing with cubes. Act

Nearest Common Ancestors Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 18886   Accepted: 9991 Description A rooted tree is a well-known data structure in c

Machine Time Limit: 2 Seconds      Memory Limit: 65536 KB In a typical assembly line, machines are connected one by one. The first machine's output product will be the second machine's raw mater

1329: 一行盒子 Time Limit: 1 Sec  Memory Limit: 128 MB Submit: 381  Solved: 72 [Submit][Status][Web Board] Description 你有一行盒子，从左到右依次编号为1, 2, 3,…, n。你可以执行四种指令： 1 X Y表示把盒子X移动到盒子Y左边（如果X已经在Y的左边则忽略

K Smallest Sums You're given k arrays, each array has k integers. There are kk ways to pick exactly one element in each array and calculate the sum of the integers. Your task is to find the k small

Tree Summing

Spreadsheet  In 1979, Dan Bricklin and Bob Frankston wrote VisiCalc, the first spreadsheetapplication. It became a huge success and, at that time, was the killerapplication for the Apple II

Expressions Arithmetic expressions are usually written with the operators inbetween thetwo operands (which is called infix notation). For example, (x+y)*(z-w)is an arithmetic expression in infix n

Generalized Matrioshkas  Vladimir worked for years making matrioshkas, those nesting dolls that certainly represent truly Russian craft. A matrioshka is a doll that may be opened in two hal

Matrix Chain Multiplication  Suppose you have to evaluate an expression like A*B*C*D*E where A,B,C,D and E are matrices.Since matrix multiplication is associative, the order in which multip

Parentheses Balance  You are given a string consisting of parentheses () and []. Astring of this type is said to be correct: (a)if it is the empty string(b)if A and B are correct, AB is c

C. Guess Your Way Out! time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Amr bought a new video game "Guess Yo