Submission #911516

#	Time	Username	Problem	Language	Result	Execution time	Memory
911516		Muhammad_Aneeq	Crayfish scrivener (IOI12_scrivener)	C++17	60 / 100	1063 ms	6116 KiB

scrivener

#include <string>
#include <algorithm>
using namespace std;
int const N=1e6+10;
char com[N]={};
int ind[N]={};
int num=0;
string g="";
bool w=1;
void Init()
{
	com[num]=' ';
	ind[0]=0;
}
void TypeLetter(char L)
{
	num++;
	com[num]=L;	
	ind[num]=num;
	g+=L;
}
void UndoCommands(int U)
{
	w=1;
	ind[num+1]=ind[num-U];
	com[num+1]=com[num-U];
	num++;
}
char GetLetter(int P)
{
	if (w)
	{
		g="";
		int i=ind[num];
		while (i!=0)
		{
			g+=com[i];
			i=ind[i-1];
		}
		reverse(begin(g),end(g));
		w=0;
	}
	return g[P];
}

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