解题思路: 1.题意:判断x^y和y^x谁大谁小. 2.由于x^y和y^x太大了,时间复杂度也不允许,所以做同等变换,比较e^(ylnx)和e^(xlny). 3.即为比较ylnx和xlny的大小. 注意: 由于涉及到浮点数,我们需要处理一下误差,若差值在1e-6范围内视为相等. 代码: #include <bits/stdc++.h> using namespace std; typedef long long ll; int main(){ ios::sync_with_stdio(fal…

E. The Last Fight Between Human and AI 题目连接: http://codeforces.com/contest/676/problem/E Description 100 years have passed since the last victory of the man versus computer in Go. Technologies made a huge step forward and robots conquered the Earth!…

链接 Codeforces 676E The Last Fight Between Human and AI 题意 给一个多项式,有些系数不确定.人和机器轮流填系数,系数可以是任何数,问是否能使得最后的多项式整除 x-k 思路 整除x-k就等价 x=k时,多项式为0. 系数可以是任何数的话就能得到任何结果,只要人是否是填最后一个就行. 另外分 k=0 和 k<>0两种情况考虑. 代码 #include <iostream> #include <cstdio> #incl…

B. High School: Become Human time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Year 2118. Androids are in mass production for decades now, and they do all the work for humans. But androids ha…

Codeforces Round #354 (Div. 2) Problems     # Name     A Nicholas and Permutation standard input/output 1 s, 256 MB    x3384 B Pyramid of Glasses standard input/output 1 s, 256 MB    x1462 C Vasya and String standard input/output 1 s, 256 MB    x1393…

题目 Source http://codeforces.com/problemset/problem/528/D Description Leonid works for a small and promising start-up that works on decoding the human genome. His duties include solving complex problems of finding certain patterns in long strings cons…

Error Correct System Time Limit:2000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u Submit Status Practice CodeForces 527B Description Ford Prefect got a job as a web developer for a small company that makes towels. His current work ta…

G. #TheDress Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100637/problem/G Description After landing on planet i1c5l people noticed that blue and black clothes are quite popular among the locals. Each aboriginal has at least…

Aragorn's Story Time Limit: 20 Sec  Memory Limit: 256 MB 题目连接 http://codeforces.com/problemset/problem/148/E Description Our protagonist is the handsome human prince Aragorn comes from The Lord of the Rings. One day Aragorn finds a lot of enemies who…

Ballot Analyzing Device 题目连接: http://codeforces.com/gym/100269/attachments Description Election committee of Flatland is preparing for presidential elections. To minimize human factor in ballot counting they decided to develop an automated Ballot Ana…