#include <iostream>
#include <fstream>


using namespace std;

#define maxn 100001

struct info {
    int prefix, sufix, maxx;
};

info aint[4*maxn];
int lazy[4*maxn];

void build( int l, int r, int vf ) {
    aint[vf].prefix = aint[vf].sufix = aint[vf].maxx = r - l + 1;
    if( l == r )
        return;
    build( l, (l+r)/2, vf*2 );
    build( (l+r)/2+1, r, vf*2+1 );
}

// val este -1 cand devine ocupat, este 1 cand devine liber

void push_lazy( int l, int r, int vf ) {
    if( lazy[vf] != 0 ) {
        if( l == r ) {
            if( lazy[vf] == -1 )
                aint[vf].prefix = aint[vf].sufix = aint[vf].maxx = 0;
            else
                aint[vf].prefix = aint[vf].sufix = aint[vf].maxx = 1;
            lazy[vf] = 0;
            return;
        }
        if( lazy[vf] == 1 )
            aint[vf].prefix = aint[vf].sufix = aint[vf].maxx = r - l + 1;
        else
            aint[vf].prefix = aint[vf].sufix = aint[vf].maxx = 0;
        lazy[2*vf] = lazy[2*vf+1] = lazy[vf];
        lazy[vf] = 0;
    }

}

void update( int st, int dr, int ql, int qr, int vf, int val ) {
    push_lazy( st, dr, vf );
    if( st > qr || dr < ql )
        return;
    if( ql <= st && dr <= qr ) {
        lazy[vf] = val;
        push_lazy( st, dr, vf );
    } else {
        update( st, (st+dr)/2, ql, qr, 2*vf, val );
        update( (st+dr)/2+1, dr, ql, qr, 2*vf+1, val );
    }
    if( st != dr ) {

        if( aint[2*vf].prefix == (st+dr)/2-st+1 )
            aint[vf].prefix = (st+dr)/2-st+1 + aint[2*vf+1].prefix;
        else
            aint[vf].prefix = aint[2*vf].prefix;

        if( aint[2*vf+1].sufix == dr - (st+dr)/2 )
            aint[vf].sufix = dr - (st+dr)/2 + aint[2*vf].sufix;
        else
            aint[vf].sufix = aint[2*vf+1].sufix;

        aint[vf].maxx = max( max( aint[2*vf].maxx, aint[2*vf+1].maxx ), aint[2*vf].sufix + aint[2*vf+1].prefix );

    }
}


int main() {
    int n, i, p, cer, l, r;
    ifstream cin ("hotel.in");
    ofstream cout ("hotel.out");
    cin >> n >> p;
    build( 1, n, 1 );
    for( i = 0; i < p; i++ ) {
        cin >> cer;
        if( cer == 3 )
            cout << aint[1].maxx << "\n";
        else {
            cin >> l >> r;
            r = l + r - 1;
            if( cer == 2 )
                cer = 1;
            else
                cer = -1;
            update( 1, n, l, r, 1, cer );


        }

    }
    return 0;
}