#include<fstream>
#include<vector>
using namespace std;
  
ifstream fin("hotel.in");
ofstream fout("hotel.out");
  
int n, m, start, finish, v, ok;
 
int a[400001], b[400001], c[400001];
bool s[400001];
void Read();

void Initializare( int nod, int st, int dr )
{
    if( st == dr )
    {
        a[nod] = b[nod] = c[nod] = 1;
        return;
    }
      
    int mij = (st+dr)/2;
    int stnod = (nod << 1);
    int drnod = stnod + 1;
    Initializare( stnod, st, mij );
    Initializare( drnod, mij+1, dr );
      
    a[nod] = b[nod] = c[nod] = a[stnod] + a[drnod];
}

void Update(int nod, int st, int dr );
  
int main()
{
    Read();
      
    fin.close();
    fout.close();
      
    return 0;
}
  
void Read()
{
    fin >> n >> m;
    ok = 1;
    int x, y, t;
    //Initializare(1, 1, n );
    for( int i = 1; i <= m; ++i )
    {
        fin >> t;
        if( t == 1 )
        {
            fin >> x >> y;
            v = 0;
            start = x;
            finish = x+y-1;
            Update( 1, 1, n );
        }
        if( t == 2 )
        {
            fin >> x >> y;
            v = 1;
            start = x;
            finish = x+y-1;
            Update(1, 1, n);
        }
        if( t == 3 )
        {
            if( i == 1 )
                fout << n << '\n';
            else
				fout << a[1] << '\n';
        }
    }
}
  
void Update(int nod, int st, int dr )
{   
    if( !s[nod] )
    {
        s[nod] = true;
        a[nod] = b[nod] = c[nod] = st-dr+1;
        a[2*nod] = b[2*nod] = c[2*nod] = (dr - st + 1)- (dr - (st+dr)/2 );
        a[2*nod+1] = b[2*nod+1] = c[2*nod+1] = dr - (st+dr)/2;
    } 
    
    if( st == dr )
    {
        a[nod] = v;
        b[nod] = v;
        c[nod] = v;
        return;
    }
      
    int mij = (st+dr) >> 1;
      
    int stnod = (nod << 1);
    int drnod = stnod + 1;
      
    if( start <= mij )
        Update( stnod, st, mij );
    if( finish > mij )
        Update( drnod, mij+1, dr );
      
    if( b[stnod] == (dr - st + 1)- (dr - mij) )
    {
        b[nod] = b[stnod] + b[drnod];
        if( a[nod] < b[nod] )
            a[nod] = b[nod];
    }
    else
    {
        b[nod] = b[stnod];
        if( a[nod] < b[nod] )
            a[nod] = b[nod];
    }
      
    if( b[drnod] == dr - mij )
    {
        c[nod] = c[stnod] + b[drnod];
        if( a[nod] < c[nod] )
            a[nod] = c[nod];
    }
    else
    {
        c[nod] = c[drnod];
        if( a[nod] < c[nod] )
            a[nod] = c[nod];
    }
      
    a[nod] = max( c[stnod] + b[drnod], max( a[stnod], a[drnod] ) );
}