小坏蛋_千千

Memory LeakTime Limit: 2000MS Memory limit: 131072K题目描述Memory Leak is a well-known kind of bug in C/C++. When a string is longer than expected, it will visit the memory of next array whi

Description Fascinated with the computer games, Gabriel even forgets to study. Now she needs to finish her homework, and there is an easy problem: >f(n)=⎧⎩⎨>0,n=0>1,n=1>f(n−1)+f(n−2),n≥2>>> f(n)=

Problem Description With given integers a,b,c, you are asked to judge whether the following statement is true: “For any x, if a⋅x2+b⋅x2+c=0a⋅x^2+b⋅x^2+c=0 , then x is an integer.”Input The first l

Problem Description Calculate ∑ni=1im mod (1000000000+7)\sum_{i=1}^ni^m~mod~(1000000000+7) for given n，m.Input Input contains two integers n,m(1≤n≤1000,0≤m≤10).Output Output the answer in a sin

Problem Description There are n kinds of goods in the company, with each of them has a inventory of cnti and direct unit benefit vali. Now you find due to price changes, for any goods sold on day i,

Problem Description LYD loves codeforces since there are many Russian contests. In an contest lasting for T minutes there are n problems, and for the ith problem you can get ai−di∗ti points, where ai

Description It is well-known that for any n there are exactly four n-digit numbers (including ones with leading zeros) that are self-squares: the last n digits of the square of such number are equal

Problem Description Here is a simple game. In this game, there are several piles of stones and two players. The two players play in turn. In each turn, one can choose at least one pile and at most th

Problem Description Because of the GFW (Great Firewall), we cannot directly visit many websites, such as Facebook, Twitter, YouTube, etc. But with the help of proxy and proxy server, we can easily ge

Problem Description There are N (1 ≤ N ≤ 400) stars in the sky. And each of them has a unique coordinate (x, y) (1 ≤ x, y ≤ N). Please calculate the minimum area of the rectangle (the edges of the re

JulyedTime Limit: 2000MS Memory limit: 65536K题目描述    Julyed is preparing for her CET-6. She has N words to remember, but there is only M days left. If she can’t remember all these words,

FibonacciTime Limit: 2000MS Memory limit: 131072K题目描述Fibonacci numbers are well-known as follow: Now given an integer N, please find out whether N can be represented as the sum of se

The Binding of IsaacTime Limit: 2000MS Memory limit: 65536K题目描述Ok, now I will introduce this game to you...Isaac is trapped in a maze which has many common rooms…Li

Triple NimTime Limit: 2000MS Memory limit: 65536K题目描述Alice and Bob are always playing all kinds of Nim games and Alice always goes first. Here is the rule of Nim game:    There are som

Reversed WordsTime Limit: 2000MS Memory limit: 131072K题目描述Some aliens are learning English. They have a very strange way in writing that they revered every word in the sentence but keep

Description Hmz likes to play fireworks, especially when they are put regularly. Now he puts some fireworks in a line. This time he put a trigger on each firework. With that trigger, each firewo