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tags: DDJRC
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# DDJ Regular Contest Round#9

<center> <iframe src="https://free.timeanddate.com/countdown/i7u51f5y/n241/cf11/cm0/cu4/ct0/cs0/ca0/co1/cr0/ss0/cac1f1e33/cpcfbb/pcfff/tcfff/fs100/szw320/szh135/tatTime left to Event in GMT(+8) /tac1f1e33/tptTime%20since%20Event%20started%20in/tpc1f1e33/iso2021-07-23T20:00:00/pd2" allowtransparency="true" frameborder="0" width="290" height="38"></iframe> </center>

# Information

**Time:** [2021/07/23 20:00 - 2021/07/23 22:30 (GMT+8)](https://www.timeanddate.com/worldclock/fixedtime.html?msg=DDJ+Regular+Contest+Round%234+%22DD+Jet%22&iso=20210611T20&p1=241&ah=2&am=30)

**Duration:** <font size=4>150</font> minutes

**Problem count:** <font size=4>5</font>

**Language:** Chinese(Traditional)

**Author:** *tree~, revcoding*

# About Problems

- The scoring distribution is **100-100-100-100-100**
- The problems **aren't** sorted by difficulty

# Links

**Contest URL:** http://203.64.191.163/ShowContest?contestid=119

**View Other Contests:** https://hackmd.io/@jakao/DRCList

**Question Form:** https://docs.google.com/forms/d/e/1FAIpQLSdpy8jIZRVMqPaQHmUsq3Q57YOiA53uY1TmFBgBw29LRwNcew/viewform

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# Tutorial

**Tutorial URL:** https://hackmd.io/@tree-note/drc9_tutorial

# Special Thanks

**Tester:** *tree~, revcoding*

**Host of DDJ Regular Contest:** *jakao*, *benson0402*

and - <strong><font size=5>Every Participants of DDJRC#9</font></strong>