Submission #440201

#	Time	Username	Problem	Language	Result	Execution time	Memory
440201		prvocislo	Crayfish scrivener (IOI12_scrivener)	C++17	100 / 100	648 ms	224452 KiB

scrivener

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

const int maxn = 1e6 + 5;
crope r[maxn];
int n = 0;
void Init() {  }
void TypeLetter(char L) 
{
  r[n+1] = r[n];
  r[n+1].push_back(L);
  n++;
}
void UndoCommands(int U) 
{
  r[n+1] = r[n-U]; 
  n++;
}
char GetLetter(int P) 
{
  return r[n][P];
}

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