user897042 why -1? looks like someone thought that the first 2 problems will be rated 3500 on codeforces.

it was very easy to solve a and b. ez contest

what a community i asked for help and noone cares.

user897042 need help on these two too:https://codeforces.com/contest/1857/problem/Ghttps://codeforces.com/contest/1702/problem/G

https://codeforces.com/contest/315/problem/B how to solve this problem i wrote two updates one for assinging and second for interval with lazy. but it doesnt seem to work because two seperate updates doesnt have link between them.