#include <fstream>

using namespace std;

const int N = 1 + (1<<18);

ifstream in("hotel.in");
ofstream out("hotel.out");

struct nod
{
	int st,dr,max;
};

int n,a,b;
nod t[N];

inline int fs(int p)
{
	return p<<1;
}

inline int fd(int p)
{
	return (p<<1) + 1;
}

inline int mijloc(int st, int dr)
{
	return (st + dr) >> 1;
}

void init(int p, int st, int dr)
{
	t[p].st = t[p].dr = t[p].max = dr - st + 1;
	if(st == dr)
		return;
	int mij = (st + dr) >> 1;
	if(a <= mij)
		init(fs(p), st, mij);
	if(a > mij)
		init(fd(p), mij+1, dr);
}

inline void zero(int p)
{
	t[p].st = t[p].dr = t[p].max = 0;
}

inline void complet(int p, int st, int dr)
{
	t[p].st = t[p].dr = t[p].max = dr - st + 1;
}

inline bool plin(int p, int st, int dr)
{
	return t[p].max == dr - st + 1;
}

inline bool gol(int p)
{
	return t[p].max == 0;
}

inline void actualizare(int p, int st, int dr, int fs, int fd)
{
	
	if(t[fs].st == mijloc(st, dr) - st + 1)
		t[p].st = t[fs].st + t[fd].st;
	else
		t[p].st = t[fs].st;
	
	if(t[fd].dr == dr - mijloc(st, dr))
		t[p].dr = t[fd].dr + t[fs].dr;
	else
		t[p].dr = t[fd].dr;
	
	t[p].max = max(max(t[fs].max, t[fd].max), t[fs].dr + t[fd].st);
	
}

void modifica(int tip, int p, int st, int dr)
{
	if(st == dr)
	{
		if(tip == 1)
			zero(p);
		else
			complet(p, st, dr);
		return;
	}
	
	int mij = mijloc(st, dr);
	
	if(plin(p, st, dr))
	{
		complet(fs(p), st, mij);
		complet(fd(p), mij+1, dr);
	}
	
	if(gol(p))
	{
		zero(fs(p));
		zero(fd(p));
	}
	
	if(a <= mij)
		modifica(tip, fs(p), st, mij);
	if(b > mij)
		modifica(tip, fd(p), mij+1, dr);
	
	actualizare(p, st, dr, fs(p), fd(p));
}

int main()
{
	int m,tip,nr;
	in>>n>>m;
	for(int i=1 ; i<=n ; i++)
	{
		a = i;
		init(1, 1, n);
	}
	
	while(m--)
	{
		in>>tip;
		if(tip == 1 || tip == 2)
		{
			in>>a>>nr;
			b = a + nr - 1;
			modifica(tip, 1, 1, n);
			continue;
		}
		out<<t[1].max<<"\n";
	}
	return 0;
}