Give you two numbers A and B, if A is equal to B, you should print "YES", or print "NO".

Fibonacci数列，定义如下： f(1)=f(2)=1 f(n)=f(n-1)+f(n-2) n>=3。 计算第n项Fibonacci数值。

On a grid map there are n little men and n houses. In each unit time, every little man can move one unit step, either horizontally, or vertically, to an adjacen...

Problem Description 小时候，乡愁是一枚小小的邮票，我在这头，母亲在那头。                         —— 余光中

Ujan has been lazy lately, but now has decided to bring his yard to good shape. First, he decided to paint the path from his house to the gate.

Bob watches TV every day. He always sets the volume of his TV to bb. However, today he is angry to find out someone has changed the volume to aa. Of course, Bob...

Bob is an avid fan of the video game "League of Leesins", and today he celebrates as the League of Leesins World Championship comes to an end!

Cows are such finicky eaters. Each cow has a preference for certain foods and drinks, and she will consume no others.

Gabiluso is one of the greatest spies in his country. Now he’s trying to complete an “impossible” mission ----- to make it slow for the army of City Colugu to ...

Constanze is the smartest girl in her village but she has bad eyesight.