参考自:https://www.cnblogs.com/ECJTUACM-873284962/p/6414173.html The Famous Clock Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1399    Accepted Submission(s): 940 Problem Description Mr. B, Mr.…

The Famous Clock Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1399    Accepted Submission(s): 940 Problem Description Mr. B, Mr. G and Mr. M are now in Warsaw, Poland, for the 2012's ACM-ICPC…

What Are You Talking About Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 102400/204800 K (Java/Others)Total Submission(s): 12617    Accepted Submission(s): 4031 Problem Description Ignatius is so lucky that he met a Martian yesterday. But…

Problem Description The Romans used letters from their Latin alphabet to represent each of the seven numerals in their number system. The list below shows which letters they used and what numeric value each of those letters represents: I = 1 V = 5 X…

Problem Description Ignatius is so lucky that he met a Martian yesterday. But he didn't know the language the Martians use. The Martian gives him a history book of Mars and a dictionary when it leaves. Now Ignatius want to translate the history book…

What Are You Talking About Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 102400/204800 K (Java/Others)Total Submission(s): 31176    Accepted Submission(s): 10700 Problem Description Ignatius is so lucky that he met a Martian yesterday. But…

Computer Virus on Planet Pandora Time Limit: 6000/2000 MS (Java/Others)    Memory Limit: 256000/128000 K (Java/Others)Total Submission(s): 2578    Accepted Submission(s): 713 Problem Description     Aliens on planet Pandora also write computer progra…

Babelfish Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 30816   Accepted: 13283 Description You have just moved from Waterloo to a big city. The people here speak an incomprehensible dialect of a foreign language. Fortunately, you have…

What Are You Talking About Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 102400/204800 K (Java/Others) Total Submission(s): 20680    Accepted Submission(s): 6852 Problem Description Ignatius is so lucky that he met a Martian yesterday. But…

http://acm.hdu.edu.cn/showproblem.php?pid=4998 这道题,在比赛的时候看了很久,才明白题目的大意.都怪自己不好好学习英语.后来经过队友翻译才懂是什么意思. 题目大意:二维平面内的物品,把它们绕给定的n个点,逆时针旋转. 现在求通过一个A点,逆时针旋转角度P就能完成这个操作. 问:这个点A的坐标,P的角度. 解题思路:随意找个点t1,绕着n个点旋转得到t2.点A一定在线段t1t2的垂直平分线上.再找一点t3,绕n个点旋转得到t4. 线段t1t2的垂直平分…