We will hold M-SOLUTIONS Programming Contest 2020.

• Contest URL: https://atcoder.jp/contests/m-solutions2020
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200725T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: E869120, square1001
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AIsing Programming Contest 2020.

• Contest URL: https://atcoder.jp/contests/aising2020
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200711T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: camypaper
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 173.

• Contest URL: https://atcoder.jp/contests/abc173
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200705T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: evima, gazelle, kyopro_friends, sheyasutaka, ynymxiaolongbao
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 172.

• Contest URL: https://atcoder.jp/contests/abc172
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200627T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: beet, evima, kyopro_friends, tozangezan, sheyasutaka, ynymxiaolongbao
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 171.

• Contest URL: https://atcoder.jp/contests/abc171
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200621T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: evima, gazelle, Kmcode, kyopro_friends, sheyasutaka, tozangezan
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 170.

• Contest URL: https://atcoder.jp/contests/abc170
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200614T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: evima, gazelle, kort0n, EnumerativeCombinatorics, YoshikaMiyafuji, yuma000
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 169.

• Contest URL: https://atcoder.jp/contests/abc169
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200531T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: kyopro_friends, latte0119, tempura0224, ynymxiaolongbao, yuma000
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 168.

• Contest URL: https://atcoder.jp/contests/abc168
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200517T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: sheyasutaka
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 167.

• Contest URL: https://atcoder.jp/contests/abc167
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200510T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: gazelle, kort0n, kyopro_friends, potetisensei, sheyasutaka, tempura0224
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 166.

• Contest URL: https://atcoder.jp/contests/abc166
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200503T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: gazelle, kort0n, kyopro_friends, sheyasutaka, ynymxiaolongbao
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 165.

• Contest URL: https://atcoder.jp/contests/abc165
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200502T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: beet, DEGwer, kort0n, sheyasutaka, EnumerativeCombinatorics, ynymxiaolongbao
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

UPD:

In Problem E, the constraints says N <= 100000, but it turned out that the inputs are made under the condition N <= 200000.

It was revealed that only 6 people were affected by the defect of the problem E constraint, and 4 among them were rated competitors. As the impact is very minor, contestants excluding the four are going be rated, and the affected four will also be rated after rejudging to get AC on their submissions.

We will hold AtCoder Beginner Contest 164.

• Contest URL: https://atcoder.jp/contests/abc164
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200426T2100&p1=248
• Duration: TBD (around 2 hours)
• Number of Tasks: 6
• Writer: kyopro_friends, Kmcode, latte0119, EnumerativeCombinatorics, ynymxiaolongbao, wo01
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

Addition: About the Unrated ABC163

We are sorry for the inconvenience.

The server down during the last contest was caused by a sudden access to the ALB, and we found that we could solve this problem by doing Pre-Warming.

Also, the bug where the problem statement does not show up has been resolved by changing the caching algorithm. The problem with submissions showing up as IE (Internal Error) was due to the Judge server's scoring algorithm being different than in the past. This too has already been fixed.

We will hold AtCoder Beginner Contest 163.

• Contest URL: https://atcoder.jp/contests/abc163
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200419T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: gazelle, kyopro_friends, nuip, latte0119, ynymxiaolongbao, yuma000
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 162.

In this contest, available languages are different from usual. Please see the bottom of this contest page for details. (Only Japanese)

https://atcoder.jp/contests/language-test-202001

• Contest URL: https://atcoder.jp/contests/abc162
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200412T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: kyopro_friends, gazelle, camypaper, tempura0224, ynymxiaolongbao
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

UPD: I apologize for the slow grading. The problem has been fixed during the contest. You'll be comfortable at the next contest.

We will hold AtCoder Beginner Contest 161.

• Contest URL: https://atcoder.jp/contests/abc161
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200404T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: chokudai, evima, kyopro_friends, latte0119, namonakiacc, sheyasutaka, EnumerativeCombinatorics, YoshikaMiyafuji
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 160.

• Contest URL: https://atcoder.jp/contests/abc160
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200328T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: DEGwer, kyopro_friends, latte0119, satashun, YoshikaMiyafuji
• Rated range: ~ 1999
• The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 159.

• Contest URL: https://atcoder.jp/contests/abc159
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200322T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: DEGwer, kyopro_friends, latte0119, namonakiacc, satashun, tempura0224, EnumerativeCombinatorics, yokozuna57
• Rated range: ~ 1999
• The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 158.

• Contest URL: https://atcoder.jp/contests/abc158
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200307T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: satashun, evima, tempura0224
• Rated range: ~ 1999
• The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 157.

• Contest URL: https://atcoder.jp/contests/abc157
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200301T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: kort0n
• Rated range: ~ 1999
• The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 156.

• Contest URL: https://atcoder.jp/contests/abc156
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200222T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: gazelle, kort0n, namonakiacc
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 155.

• Contest URL: https://atcoder.jp/contests/abc155
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200216T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: sheyasutaka, rng_58, beet, Drafear
• Rated range: ~ 1999
• The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 154.

• Contest URL: https://atcoder.jp/contests/abc154
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200209T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: DEGwer, kyopro_friends, latte0119, sheyasutaka, EnumerativeCombinatorics
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 153.

• Contest URL: https://atcoder.jp/contests/abc153
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200126T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: kyopro_friends
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 152.

• Contest URL: https://atcoder.jp/contests/abc152
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200119T2050&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: latte0119, beet, DEGwer, Drafear, HIR180, kyopro_friends, EnumerativeCombinatorics, yokozuna57
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 151.

• Contest URL: https://atcoder.jp/contests/abc151
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200112T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 6
• Writer: beet, DEGwer, kort0n, kyopro_friends, satashun, EnumerativeCombinatorics
• Rated range: ~ 1999

The point values will be 100-200-300-400-500-600.

We are looking forward to your participation!