is this legal to compete in official round with multi-user account ??
this is the account : RGB_ICPC6
is this legal to compete in official round with multi-user account ??
this is the account : RGB_ICPC6
why the author of today's div2-912 round use the same idea of an old problem
to day's problem : https://codeforces.com/contest/1903/problem/C
the old problem : https://codeforces.com/contest/1175/problem/D