Submission #103000

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
103000	2019-03-28 12:44:51	wxh010910	Crayfish scrivener (IOI12_scrivener)	C++17	34 / 100	1091 ms	94792 KiB

scrivener

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#include <bits/stdc++.h>
using namespace std;
vector<int> from, depth;
vector<vector<int>> anc;
vector<char> type;
void Init() {
  type.push_back(' ');
  depth.push_back(0);
  anc.push_back(vector<int>());
  from.push_back(0);
}
void TypeLetter(char L) {
  type.push_back(L);
  depth.push_back(depth[from.back()] + 1);
  anc.push_back(vector<int>(1, from.back()));
  for (int i = 1; depth.back() >> i; ++i) {
    anc.back().push_back(anc[anc.back()[i - 1]][i - 1]);
  }
  from.push_back(from.size());
}
void UndoCommands(int U) {
  type.push_back(' ');
  depth.push_back(-1);
  anc.push_back(vector<int>());
  from.push_back(from[from.size() - 1 - U]);
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 22 / 22
• Subtask 4: 0 / 26
• Subtask 5: 0 / 40