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链接:https://codeforces.com/contest/1169/problem/A 题意: The circle line of the Roflanpolis subway has nn stations. There are two parallel routes in the s 阅读全文
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链接:https://ac.nowcoder.com/acm/contest/903/K 题意: icebound最喜欢吃河北菜,于是他想要大厨做一桌河北菜宴请宾客。icebound购买了一些食材,并且制订了宴会的菜单。但是他并不知道这些食材是否足够,所以希望你写一个程序帮助他。 icebound将 阅读全文
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链接:https://ac.nowcoder.com/acm/contest/903/H 题意: 2018年,icebound打开了神殿。而在2019年,icebound正在试图破解天神的密码,以期获得天神的力量。 icebound发现,想要得到神的密码,必须先要完成一个祭祀仪式。在这个祭祀仪式上, 阅读全文
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链接:https://ac.nowcoder.com/acm/contest/903/G 题意: X腿与队友到河北省来参加2019河北省大学生程序设计竞赛,然而这场比赛的题目难度实在是太高了。比赛开始一个小时后,X腿仍然没有做出一个题。这时候,X腿惊讶的发现电脑屏幕上出现了一个神奇按钮,按钮上写着” 阅读全文
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链接:https://ac.nowcoder.com/acm/contest/903/B 题意: Icebound hates math. But Imp loves math. One day, Imp gave icebound a problem. The problem is as foll 阅读全文
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链接:https://codeforces.com/contest/1167/problem/D 题意: A string is called bracket sequence if it does not contain any characters other than "(" and ")". 阅读全文
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链接:https://codeforces.com/contest/1167/problem/C 题意: In some social network, there are nn users communicating with each other in mm groups of friends. 阅读全文
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链接:https://codeforces.com/contest/1167/problem/B 题意: This is an interactive problem. Remember to flush your output while communicating with the testin 阅读全文
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链接:https://codeforces.com/contest/1167/problem/A 题意: A telephone number is a sequence of exactly 11 digits, where the first digit is 8. For example, t 阅读全文
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链接:https://codeforces.com/contest/1166/problem/C 题意: The legend of the foundation of Vectorland talks of two integers xx and yy. Centuries ago, the ar 阅读全文