Difference between en1 and en2,
changed 16 character(s)
([c++17 on linux)[](https://codeforces.me/contest/525/submission/267117496])↵
([c++20 on windows)[](https://codeforces.me/contest/525/submission/267117478])↵
↵
As you can see, C++20 on Windows got RE. The only reason is C++20's unconfigured infinite recursion stack.