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Buy Tickets Railway tickets were difficult to buy around the Lunar New Year in China, so we must get up early and join a long queue… The Lunar New Yea 阅读全文
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T2 我感觉和小胖守皇宫类似,但我当时及没看数据范围也没读清题,直接树形背包DP,大样例炸了 改了半天,硬是忘记考虑不买优惠券的情况(苦笑) 点击查看代码 #include <bits/stdc++.h> //#define int long long using namespace std; in 阅读全文
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A number whose only prime factors are 2,3,5 or 7 is called a humble number. The sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24 阅读全文