Petro Mudrievskyj

Results 2 issues of Petro Mudrievskyj

There is a bug in `mingw-w64` implementation of `sscanf` when reading doubles (see [`mingw-w64/bugs/989`](https://sourceforge.net/p/mingw-w64/bugs/989/)). `sscanf` is used to read doubles here: [`testlib/0.9.41/testlib.h:3562`](https://github.com/MikeMirzayanov/testlib/blob/0.9.41/testlib.h#L3562). And `testlib` is run on Codeforces under `mingw-w64`....