/*
Awaken
In a web like Hell
How did I reach this place
Why are they haunting me
I cannot look at God's face

Paralysing
Brilliant light
Trying to run
Want to scream, but cannot speak
I cannot look at God's face

Blind my eyes, I cannot see
What is being done to me
In my mind is only pain
All the memories are drained

Victimized
Specimen
Deathless torture
Void with no mercy
Black shroud blinds those who see

Violated
Naked before you I stand
Shattered shrine of flesh and bone
God's piercing through my soul

Segments of my life
Morbid pieces of reality
Twisted personality
Many faces yet faceless
Familiar things give way to strange
No mercy no reason just pain

Fatal
Sub-conscious control
Threshhold of pain unfolds
Transfixed martyr saving race
Who am I to judge thy grace

Awaken
In a web like Hell
How did I reach this place
Why are they haunting me
I cannot look at God's face

Blind my eyes, I cannot see
What is being done to me
In my mind is only pain
All the memories are drained
*/

//#pragma comment(linker, "/STACK:16777216")
#include <fstream>
#include <iostream>
#include <string>
#include <complex>
#include <math.h>
#include <set>
#include <vector>
#include <map>
#include <queue>
#include <stdio.h>
#include <stack>
#include <algorithm>
#include <list>
#include <memory.h>

#define y0 sdkfaslhagaklsldk
#define y1 aasdfasdfasdf
#define yn askfhwqriuperikldjk
#define j1 assdgsdgasghsf
#define tm sdfjahlfasfh
#define lr asgasgash

#define  INF 100000000
#define eps 1e-8
//#define M_PI 3.141592653589793
//#define mx 1000000000000ll
#define bs 1000000007

//#define free asdfasdfsdadsg
//#define szz 400
//#define pb push_back
#define MAXN 10000
#define free afdshjioey
//#define SIZE 60
#define bsize 256
#define clone agsdahfaassdg

using namespace std;

long n,quer,l,r,val;

string st;
long long ar1[200000];long ar[200000],nupd[200000],ar2[200000];

long long gett(long l,long r)
{
 if (nupd[l/bsize])
 {
  nupd[l/bsize]=0;
  for (int i=l/bsize*bsize;i<l/bsize*bsize+bsize;i++)
  {
   ar[i]=ar2[i/bsize];
  }
 }
 if (nupd[r/bsize])
 {
  nupd[r/bsize]=0;
  for (int i=r/bsize*bsize;i<r/bsize*bsize+bsize;i++)
  {
   ar[i]=ar2[i/bsize];
  }
 }

 long long res=0;
 while (l<=r&&l%bsize!=0)
 {
  res+=ar[l];++l;
 }
 while (l+bsize<=r)
 {
  res+=ar1[l/bsize];l+=bsize;
 }
 while (l<=r)
 {
  res+=ar[l];++l;
 }
 return res;
}

void update(long l,long r,long val)
{
  if (nupd[l/bsize])
 {
  nupd[l/bsize]=0;
  for (int i=l/bsize*bsize;i<l/bsize*bsize+bsize;i++)
  {
   ar[i]=ar2[i/bsize];
  }
 }
 if (nupd[r/bsize])
 {
  nupd[r/bsize]=0;
  for (int i=r/bsize*bsize;i<r/bsize*bsize+bsize;i++)
  {
   ar[i]=ar2[i/bsize];
  }
 }

 while (l<=r&&l%bsize!=0)
 {
  ar1[l/bsize]-=ar[l];
  ar1[l/bsize]+=val;
  ar[l]=val;++l;
 }

 while (l+bsize<=r)
 {
  ar2[l/bsize]=val;
  ar1[l/bsize]=1ll*val*bsize;
  nupd[l/bsize]=1;
  l+=bsize;
 }
 while (l<=r)
 {
  ar1[l/bsize]-=ar[l];
  ar1[l/bsize]+=val;
  ar[l]=val;++l;
 }
}

int main(){
freopen("sum.in","r",stdin);
freopen("sum.out","w",stdout);
//freopen("C:/input.txt","r",stdin);
//freopen("C:/output.txt","w",stdout);
ios_base::sync_with_stdio(0);

cin>>n>>quer;
for (int i=1;i<=quer;i++)
{
    cin>>st;
    if (st=="Q")
    {
     cin>>l>>r;
     cout<<gett(l,r)<<endl;
    }
    else
    {
        cin>>l>>r>>val;
        update(l,r,val);
    }
}

cin.get();cin.get();
return 0;}