Submission #569399

#	Time	Username	Problem	Language	Result	Execution time	Memory
569399		fuad27	Crayfish scrivener (IOI12_scrivener)	C++17	100 / 100	561 ms	227788 KiB

scrivener

#include<bits/stdc++.h>
#include<ext/rope>
using namespace std;
using namespace __gnu_cxx;
int N;
crope S[1000'010];
void Init() {N=0;}
void TypeLetter(char L) {
	N++;
	S[N]=S[N-1];
	S[N].push_back(L);
}
void UndoCommands(int U) {
	N++;
	S[N] = S[max(0, N-U-1)];
}
char GetLetter(int P) {
	return S[N][P];
}

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