Submission #1192410

#	Time	Username	Problem	Language	Result	Execution time	Memory
1192410		kiwimsy	Crayfish scrivener (IOI12_scrivener)	C++20	100 / 100	529 ms	222640 KiB

scrivener

#include <bits/stdc++.h>
#include <ext/rope>
#define ll long long
using namespace std;
using namespace __gnu_cxx;

crope s;
vector<crope> states;

void Init() {
  states.push_back(s);
}

void TypeLetter(char L) {
  s.push_back(L);
  states.push_back(s);
}

void UndoCommands(int U) {
  s = states[states.size() - U - 1];
  states.push_back(s);
}

char GetLetter(int P) {
  return *(s.mutable_begin()+P);
}

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 22 / 22
• Subtask 4: 26 / 26
• Subtask 5: 40 / 40