My solution to the E1 problem of the 747 round (https://mirror.codeforces.com/contest/1594/problem/E1) exceeds memory limit?
Here is my solution $$$\to$$$ https://mirror.codeforces.com/contest/1594/submission/131228904
I thought it wasn't supposed to MLE 'cause the depth of the recursion was less than $$$2 * log(2^{61}) = 122$$$.
Sorry, dunno how to write blogs in Codeforces properly)
Cant say for sure but I think there will be an long long int overflow for variable b. Possibly b becomes negative and you enter an infinite recursion.
Click : Accepted