#include <iostream>
#include <fstream>
#include <string>
#include <cstring>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <algorithm>
using namespace std;
int num[200002]={0};
int main()
{
	ifstream fin("cline.in");
	ofstream fout("cline.out");
	int m;
	int c;
	int front=100001,behind=100000;
	int j=0;
	char a,b;
	fin>>m;
	for (int i=1;i<=m;i++)
	{
		fin>>a;
		if (a=='A')
		{
			string s="";
			fin>>b;
			getline(fin,s);
			if (s!="") 
			{
				s=""; 
				continue;
			}
			j++;
			if (b=='L')
			{
				front--;
				num[front]=j;
			}
			if (b=='R')
			{
				behind++;
				num[behind]=j;
			}
		}
		else
		{
			string s="";
			fin>>b>>c;
			getline(fin,s);
			if (s!="")
			{
				s="";
				continue;
			}
			if (b=='R')
				behind-=c;
			if (b=='L')
				front+=c;
		}
	}
	for (int i=front;i<=behind;i++)
		fout<<num[i]<<endl;
	return 0;
}