# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
975770 | 2024-05-05T20:15:44 Z | marinaluca | Crayfish scrivener (IOI12_scrivener) | C++14 | 0 ms | 0 KB |
char c[1000010]; int a[1000010], lev[1000010], st[20][1000010], t; void Init(){} void Typeletter (char L){ int i; c[a[++t] = t] = L; lev[t] = lev[st[0][t] = a[t - 1]] + 1; for (i = 1; i < 20; ++ i) st[i][t] = st[i - 1][st[i - 1][t]]; } void UndoCommands(int U){a[++t] = a[t - U - 1];} char GetLetter(int P){ int aa = a[t], i; for (i = 20; i --;) if (lev[st[i][aa]] > P) aa = st[i][aa]; return c[aa]; }