#include<iostream>
#include<fstream>
using namespace std;
int l[200000]={0};
int main()
{
    ifstream fin("cline.in");
    ofstream fout("cline.out");
    int m,tou,c,wei,j=0;
    tou=100001;
    wei=100000;
    char a,b;
 
    fin>>m;
    for (int i=1;i<=m;i++)
    {
        fin>>a;
        if (a=='A')
        {
            string fei="";
            fin>>b;
            getline(fin,fei);
            if (fei!="") { fei=""; continue;}
            j++;
            if (b=='L')
            {
                tou--;
                l[tou]=j;
            }
            else
            if (b=='R')
            {
                wei++;
                l[wei]=j;
            }
        }
        else
        {
            string fei="";
            fin>>b>>c;
            getline(fin,fei);
            if (fei!=""){ fei=""; continue;}
            if (b=='R')
            {
                wei=wei-c;
            }
            else
            if (b=='L')
            {
                tou=tou+c;
            }
        }
    }
    for (int i=tou;i<=wei;i++)
    {
        fout<<l[i]<<endl;
    }
    fin.close();
    fout.close();
    return 0;
}