제출 #897887

#제출 시각아이디문제언어결과실행 시간메모리
897887aykhn크레이피쉬 글쓰는 기계 (IOI12_scrivener)C++17
100 / 100
339 ms166848 KiB
#include <bits/stdc++.h> // author: aykhn using namespace std; #define mpr make_pair #define pb push_back #define fi first #define se second const int MXN = 1e6 + 5; const int LOG = 21; int n; int adj[MXN][26]; int p[LOG][MXN]; char val[MXN]; int dep[MXN]; vector<int> s; void Init() { s.clear(); for (int i = 0; i <= n; i++) { for (int j = 0; j < LOG; j++) p[j][i] = 0; for (int j = 0; j < 26; j++) adj[i][j] = 0; val[i] = '$'; } s.pb(0); n = 0; } void TypeLetter(char L) { int cur = s.back(); if (adj[cur][L - 'a']) s.pb(adj[cur][L - 'a']); else { adj[cur][L - 'a'] = ++n; p[0][n] = cur; for (int i = 1; i < LOG; i++) p[i][n] = p[i - 1][p[i - 1][n]]; dep[n] = dep[cur] + 1; val[n] = L; s.pb(n); } } void UndoCommands(int U) { s.pb(s[(int)s.size() - U - 1]); } char GetLetter(int P) { int cur = s.back(); int d = dep[cur] - P - 1; for (int i = LOG - 1; i >= 0; i--) { if (d >> i & 1) cur = p[i][cur]; } return val[cur]; }
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...