I was just doing virtual on 1338A - Powered Addition.
I wrote the following code: 121160133
and it out puts "63" on this test: N = 5, A = {-9, -2, -2, 7, 5} on both versions of C++17.
The probably problematic part is here:
If I output i and ans, ans is changed to 63 at i = 2.
But I thought __lg(0) is -1? Also in custom invocation, the error message never appears, and the code is never terminated by assert(false).
Does anyone have any idea?