[ZOJ Monthly, January 2019](http://acm.zju.edu.cn/onlinejudge/contestInfo.do?contestId=382) will be held on Saturday [(time)](https://www.timeanddate.com/worldclock/fixedtime.html?month=1&day=19&year=2019&hour=12&min=00&sec=00&p1=33). The main problem setters are [user:chenjb,2019-01-14] and [user:Claris,2019-01-14].↵
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[Contest Link](http://acm.zju.edu.cn/onlinejudge/contestInfo.do?contestId=382)↵
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It will last for 5 hours and have 8-9 problems in total. Since there is no rating system(Thanks to [user:MudCoal,2019-01-14], we may have one in the future) in our [Zhejiang University Online Judge](http://acm.zju.edu.cn/onlinejudge/), it will be unrated. And I guess the difficulty is as a normal Educational Contest in Codeforces.↵
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All problem ideas come from members of Zhejiang University Programming Contest Setting Team and most of them have already been used in the Internal Member-Selection Contests in ZJU held in July, 2018. They have been carefully selected, modified, tested by our problem setters and rearranged into this Monthly contest eventually.↵
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Special thanks to [user:Claris,2019-01-14] for helping me testing problems, modifying the content and some other matters. He even gives better and stronger solutions to some problems, which make them more interesting and challenging. I am very grateful. ↵
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Also thank [user:Tsreaper,2019-01-14] for the tech support and [user:zimpha,2019-01-14], [user:lyk248289469,2019-01-14], [user:Heltion,2019-01-14], [user:HbFS-,2019-01-14], [user:johann_wang,2019-01-14], [user:Onlynagesha,2019-01-14], [user:zhhhplus,2019-01-14], etc for their ideas. ↵
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There have been less ZOJ Monthly Contests these years. Therefore, we cherish every chance and wish to make every Monthly contest as good as possible. I really hope all of you can enjoy this contest. Can't wait to see you guys on Saturday!↵
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**UPD**: The contest will begin in less than 9 hours and there will be 9 problems in total. If you have any question about the contest, please make comments under this blog. And please not to discuss about the solution until the contest ends.
↵
[Contest Link](http://acm.zju.edu.cn/onlinejudge/contestInfo.do?contestId=382)↵
↵
It will last for 5 hours and have 8-9 problems in total. Since there is no rating system(Thanks to [user:MudCoal,2019-01-14], we may have one in the future) in our [Zhejiang University Online Judge](http://acm.zju.edu.cn/onlinejudge/), it will be unrated. And I guess the difficulty is as a normal Educational Contest in Codeforces.↵
↵
All problem ideas come from members of Zhejiang University Programming Contest Setting Team and most of them have already been used in the Internal Member-Selection Contests in ZJU held in July, 2018. They have been carefully selected, modified, tested by our problem setters and rearranged into this Monthly contest eventually.↵
↵
Special thanks to [user:Claris,2019-01-14] for helping me testing problems, modifying the content and some other matters. He even gives better and stronger solutions to some problems, which make them more interesting and challenging. I am very grateful. ↵
↵
Also thank [user:Tsreaper,2019-01-14] for the tech support and [user:zimpha,2019-01-14], [user:lyk248289469,2019-01-14], [user:Heltion,2019-01-14], [user:HbFS-,2019-01-14], [user:johann_wang,2019-01-14], [user:Onlynagesha,2019-01-14], [user:zhhhplus,2019-01-14], etc for their ideas. ↵
↵
There have been less ZOJ Monthly Contests these years. Therefore, we cherish every chance and wish to make every Monthly contest as good as possible. I really hope all of you can enjoy this contest. Can't wait to see you guys on Saturday!↵
↵
**UPD**: The contest will begin in less than 9 hours and there will be 9 problems in total. If you have any question about the contest, please make comments under this blog. And please not to discuss about the solution until the contest ends.
