Submission #1192133

#	Time	Username	Problem	Language	Result	Execution time	Memory
1192133		TroySer	Crayfish scrivener (IOI12_scrivener)	C++20	74 / 100	482 ms	272748 KiB

scrivener

#include <ext/rope>

using namespace __gnu_cxx;

const int SZ = 1e7 + 1;

crope states[SZ];
int currentIndex = 0;

void Init() {}

void TypeLetter(char L) {
	
	states[currentIndex + 1] = states[currentIndex] + L;
	currentIndex++;

}

void UndoCommands(int U) {

	states[currentIndex + 1] = states[currentIndex - U];
	currentIndex++;

}

char GetLetter(int P) {

  	return states[currentIndex][P];

}

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 22 / 22
• Subtask 4: 0 / 26
• Subtask 5: 40 / 40