Submission #456117

#	Time	Username	Problem	Language	Result	Execution time	Memory
456117		Khizri	Crayfish scrivener (IOI12_scrivener)	C++17	34 / 100	147 ms	262148 KiB

scrivener

#include <bits/stdc++.h>
using namespace std;
const int mxn=1e6+5;
int k=0;
string arr[mxn];
char last;

void Init() {}

void TypeLetter(char L) {
	k++;
	string s=arr[k-1];
	s+=L;
	arr[k]=s;
}

void UndoCommands(int U) {
	++k;
	arr[k]=arr[k-U-1];
}

char GetLetter(int P) {
	return arr[k][P];
}

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