Hello! I'm happy to announce XX Open Cup: Grand Prix of Nanjing, which will be held on May 3rd, 2020.↵
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This contest is mainly prepared by [user:gisp_zjz,2020-04-29] and me, which has already been used in Moscow Pre-Finals Workshop 2020 Day 5 on April 29th, 2020.↵
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As you can see on the top of the statement, this contest is also been called Legilimens+Coffee Chicken Contest. Team [Coffee Chicken](https://codeforces.me/team/44706) from Nanjing University will participate in World Finals 2020 and we wish them best luck in Moscow. Team [Legilimens](https://codeforces.me/team/32489) is from Zhejiang University, which is my team in the past 3 years. Although we didn't get advanced to World Finals 2020 and this is the end of our journey, we have experienced a lot of happy and unforgettable moments. Therefore, please allow me to express my gratefulness to my teammates [user:Subconscious,2020-04-29] and [user:oipotato,2020-04-29]. And may the friendship between Nanjing University and Zhejiang University last forever.↵
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Authors of this contest come from Competitive Programming Team members from both Zhejiang University and Nanjing University, including [user:gisp_zjz,2020-04-29], [user:Acesrc,2020-04-29], [user:zyb,2020-04-29], [user:Roundgod,2020-04-29], [user:Calabash_boy,2020-04-29], [user:sy_chen,2020-04-29], [user:chenjb,2020-04-29], [user:Subconscious,2020-04-29], [user:oipotato,2020-04-29], [user:Heltion,2020-04-29], etc.↵
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Testers: [user:mayaohua2003,2020-04-29], [user:gtrhetr,2020-04-29], [user:xiaowuc1,2020-04-29]. Thank you!↵
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Contest link: http://official.contest.yandex.ru/opencupXX/contest/18242/enter (Only visible for users with OpenCup login)↵
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I will post the editorial after the contest. We are looking forward to your participation!↵
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**UPD**: Now it is over. Please feel free to discuss solutions andI will uploadthis is the e[Editorial in about an hour.(Because I am in the middle of a traffic jam right now, SAD...Sketch](https://www.dropbox.com/s/gt14yft414e5qob/Gp%20of%20Nanjing.pdf?dl=0)↵
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This contest is mainly prepared by [user:gisp_zjz,2020-04-29] and me, which has already been used in Moscow Pre-Finals Workshop 2020 Day 5 on April 29th, 2020.↵
↵
As you can see on the top of the statement, this contest is also been called Legilimens+Coffee Chicken Contest. Team [Coffee Chicken](https://codeforces.me/team/44706) from Nanjing University will participate in World Finals 2020 and we wish them best luck in Moscow. Team [Legilimens](https://codeforces.me/team/32489) is from Zhejiang University, which is my team in the past 3 years. Although we didn't get advanced to World Finals 2020 and this is the end of our journey, we have experienced a lot of happy and unforgettable moments. Therefore, please allow me to express my gratefulness to my teammates [user:Subconscious,2020-04-29] and [user:oipotato,2020-04-29]. And may the friendship between Nanjing University and Zhejiang University last forever.↵
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Authors of this contest come from Competitive Programming Team members from both Zhejiang University and Nanjing University, including [user:gisp_zjz,2020-04-29], [user:Acesrc,2020-04-29], [user:zyb,2020-04-29], [user:Roundgod,2020-04-29], [user:Calabash_boy,2020-04-29], [user:sy_chen,2020-04-29], [user:chenjb,2020-04-29], [user:Subconscious,2020-04-29], [user:oipotato,2020-04-29], [user:Heltion,2020-04-29], etc.↵
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Testers: [user:mayaohua2003,2020-04-29], [user:gtrhetr,2020-04-29], [user:xiaowuc1,2020-04-29]. Thank you!↵
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Contest link: http://official.contest.yandex.ru/opencupXX/contest/18242/enter (Only visible for users with OpenCup login)↵
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I will post the editorial after the contest. We are looking forward to your participation!↵
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**UPD**: Now it is over. Please feel free to discuss solutions and
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