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令人称奇的简单证明:五种方法证明根号2是无理数 我喜欢各种各样的证明。人们很难想到这样一些完全找不到突破口的东西竟然能够证明得到。说“没有突破口”还不够确切。准确地说,有些命题多数人认为“怎么可能能够证明”却用了一些技巧使得证明变得非常简单。我看了五色定理的证明,定理宣称若要对地图进行染色使得相邻区 阅读全文
posted @ 2017-07-26 17:15
Angel_Kitty
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Function Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 652 Accepted Submission(s): 267 Sample 阅读全文
posted @ 2017-07-26 11:51
Angel_Kitty
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Balala Power! Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 2668 Accepted Submission(s): 562 阅读全文
posted @ 2017-07-26 10:59
Angel_Kitty
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KazaQ's Socks Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 338 Accepted Submission(s): 212 S 阅读全文
posted @ 2017-07-26 09:32
Angel_Kitty
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Add More Zero Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 398 Accepted Submission(s): 283 S 阅读全文
posted @ 2017-07-26 08:43
Angel_Kitty
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