Submission #315027

#TimeUsernameProblemLanguageResultExecution timeMemory
315027OzyCrayfish scrivener (IOI12_scrivener)C++17
100 / 100
434 ms39544 KiB
#include <bits/stdc++.h> using namespace std; char last; #define rep(i,a,b) for (int i = (a); i <= (b); i++) #define lli long long int #define debug(a) //cout << #a << " = " << a << endl struct x{ char letra; lli padre; lli nivel; lli jump; }; lli p,act,cont = 1; x instruccion[1000002]; lli salto[1000002]; void Init() { instruccion[0].nivel = 0; instruccion[0].padre = 0; instruccion[0].letra = 0; // rep(i, 0, 1000001) rep(j, 0, 21) binaryUp[i][j] = 0; } void TypeLetter(char L) { instruccion[cont].letra = L; instruccion[cont].padre = cont-1; instruccion[cont].nivel = instruccion[ instruccion[cont].padre ].nivel + 1; p = cont - 1; if (instruccion[cont].nivel > 1) { if (instruccion[p].jump > 0 && instruccion[instruccion[cont].padre].jump == instruccion[salto[instruccion[cont].padre]].jump) { salto[cont] = salto[salto[instruccion[cont].padre]]; instruccion[cont].jump = instruccion[instruccion[cont].padre].jump*2 + 1; } else { salto[cont] = instruccion[cont].padre; instruccion[cont].jump = 1; } } cont++; } void UndoCommands(int U) { instruccion[cont] = instruccion[cont - U - 1]; act = 0; salto[cont] = salto[cont - U - 1]; cont++; } char GetLetter(int P) { act = cont-1; p = instruccion[act].nivel; P++; while (P < p) { if (p - instruccion[act].jump >= P) { p -= instruccion[act].jump; act = salto[act]; } else { p--; act = instruccion[act].padre; } } return instruccion[act].letra; }
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