Comments
+10

I can understand the solution of G now,but I've got no idea about how the vital observation "$$$(a,b)$$$ is valid then $$$(a+1,b+1)$$$ is valid if and only if $$$s_{b+1}=t_{b+1}$$$" was found.What inspired you think about that?Can someone help me?
0

If my rating become more than 2100 after I take part in the round 829 and then I take part in round 830,will my rating be calculated based on the rating lower than 2100 or more than 2100?