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- 13:22, 5 August 2019 diff hist +23 2019 Multi-University,Nowcoder Day 6 →Problem A
- 12:43, 5 August 2019 diff hist +252 2019 Multi-University,HDU Day 5 →Problem G
- 11:31, 5 August 2019 diff hist +191 2019 Multi-University,HDU Day 5 →Problem G
- 11:20, 5 August 2019 diff hist +109 2019 Multi-University,HDU Day 5 →Problem G
- 11:08, 5 August 2019 diff hist +835 2019 Multi-University,HDU Day 5 →Problem H
- 10:33, 5 August 2019 diff hist +17 ITMO Chinese Winter Camp Day3 →Problem G current
- 10:33, 5 August 2019 diff hist -30 ITMO Chinese Winter Camp Day3 →Problem C