一定要记住是有向的，不然你理解不了b！=v；...
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其他好文 时间：
2014-07-16 17:33:48
阅读次数：
209
不可摸数
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 8154 Accepted Submission(s): 2095
Problem Description
s(n)是正整数n的真因子之和，即小于n且...
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其他好文 时间：
2014-07-16 17:30:36
阅读次数：
300
Description
Captain Clearbeard decided to go to the harbour for a few days so his crew could inspect and repair the ship. Now, a few days later, the pirates are getting landsick(Pirates get landsic...
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其他好文 时间：
2014-07-16 17:26:06
阅读次数：
300
Game Prediction
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 717 Accepted Submission(s): 385
Problem Description
Suppose ther...
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其他好文 时间：
2014-07-16 17:18:35
阅读次数：
183
YY's new problem
Time Limit: 12000/4000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)
Total Submission(s): 4061 Accepted Submission(s): 1143
Problem Description
Given a ...
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其他好文 时间：
2014-07-16 17:08:39
阅读次数：
182
Wooden Sticks
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 11244 Accepted Submission(s): 4627
Problem Description
The...
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其他好文 时间：
2014-07-16 11:41:32
阅读次数：
167
今年暑假不AC
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 26773 Accepted Submission(s): 14091
Problem Description
“今年暑假不AC？”
“是的。...
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其他好文 时间：
2014-07-16 10:54:24
阅读次数：
274
Equations
Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 5226 Accepted Submission(s): 2079
Problem Description
Consider equatio...
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其他好文 时间：
2014-07-16 10:10:58
阅读次数：
169
Arbitrage
Problem Description
Arbitrage is the use of discrepancies in currency exchange rates to transform one unit of a currency into more than one unit of the same currency. For example, ...
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其他好文 时间：
2014-07-16 10:05:49
阅读次数：
260
