IOI 2018 JAPAN Opening Ceremony (ENG) 9/2
http://live2.nicovideo.jp/watch/lv314346133

IOI 2018 JAPAN Programming Contest [Day1] (ENG) 9/3
http://live2.nicovideo.jp/watch/lv314346295

IOI 2018 JAPAN Programming Contest [Day2] (ENG) 9/5
http://live.nicovideo.jp/gate/lv314346465