using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;
 
class Program
{
    public void Proc()
    {
        Reader.IsDebug = false;
        int[] inpt = Reader.GetInt();
        
        int areaLength = inpt[0];
        int queryCount = inpt[1];
        
        Dictionary<int, int> leftDic = new Dictionary<int, int>();
        Dictionary<int, int> rightDic = new Dictionary<int, int>();
        for(int i=0; i<queryCount; i++) {
            Dictionary<int, int> subL = new Dictionary<int, int>();
            Dictionary<int, int> subR = new Dictionary<int, int>();
            List<int> keys = new List<int>(leftDic.Keys);
            keys.ForEach((a)=>{
                if(a == 0) {
                    subR.Add(0, leftDic[a]);
                } else {
                    subL.Add(a-1, leftDic[a]);
                }
            });
            keys = new List<int>(rightDic.Keys);
            keys.ForEach((a)=>{
                if(a == areaLength - 1) {
                    if(subL.ContainsKey(a)) {
                        subL[a]+=rightDic[a];
                    } else {
                        subL.Add(a, rightDic[a]);
                    }
                } else if(subR.ContainsKey(a+1))
                {
                   subR[a+1] += rightDic[a];
                } else
                {
                    subR.Add(a+1, rightDic[a]);
                }
            });
            string[] tmp = Reader.ReadLine().Split(' ');
            int num1 = int.Parse(tmp[1]);
            int num2 = int.Parse(tmp[2]);
            if(tmp[0].Equals("R")) {
                if(subR.ContainsKey(num1)) {
                    subR[num1] += num2;
                } else
                {
                    subR.Add(num1, num2);
                }
            } else if(tmp[0].Equals("L")) {
                if(subL.ContainsKey(num1)) {
                    subL[num1] += num2;
                } else
                {
                    subL.Add(num1, num2);
                }
            } 
            rightDic = subR;
            leftDic = subL;
            if(tmp[0].Equals("C")) {
                HashSet<int> hs = new HashSet<int>(rightDic.Keys);
                hs = new HashSet<int>(hs.Concat(leftDic.Keys));
                long ans = 0;
                hs.Where(a=> a>=num1 && a < num2).ToList().ForEach((b)=>{
                    if(rightDic.ContainsKey(b)) {
                        ans += rightDic[b];
                    }
                    if(leftDic.ContainsKey(b)) {
                        ans += leftDic[b];
                    }
                });
                Console.WriteLine(ans);
            }
            
        }

    }

    public class Reader
    {
        public static bool IsDebug = true;
        private static String PlainInput = @"




 
";
        private static System.IO.StringReader Sr = null;
        public static string ReadLine()
        {
            if (IsDebug)
            {
                if (Sr == null)
                {
                    Sr = new System.IO.StringReader(PlainInput.Trim());
                }
                return Sr.ReadLine();
            }
            else
            {
                return Console.ReadLine();
            }
        }
        public static int[] GetInt(char delimiter = ' ', bool trim = false)
        {
            string inptStr = ReadLine();
            if (trim)
            {
                inptStr = inptStr.Trim();
            }
            string[] inpt = inptStr.Split(delimiter);
            int[] ret = new int[inpt.Length];
            for (int i = 0; i < inpt.Length; i++)
            {
                ret[i] = int.Parse(inpt[i]);
            }
            return ret;
        }
    }
    static void Main()
    {
        Program prg = new Program();
        prg.Proc();
    }
}