#include <bits/stdc++.h>
#define mp(X,Y) make_pair(X,Y)
#define IM set<pair<int,int>>::iterator
using namespace std;ifstream f("hotel.in");ofstream g("hotel.out");
int n,p;
set<pair<int,int>> segm;
multiset<int> vals;
void PUSH(int A,int B)
{
    int L=B-A+1;
    vals.insert(L);
    segm.insert(mp(A,B));
}
void POP(IM it)
{
    int A,B;
    tie(A,B)=*it;
    int L=B-A+1;
    vals.erase(vals.find(L));
    segm.erase(it);
}
int main()
{
    f>>n>>p;
    PUSH(-1,-2);
    PUSH(n+3,n+2);
    PUSH(1,n);
    for(; p; p--)
    {
        for(auto it:vals)cerr<<it<<' ';cerr<<'\n';
        int op;f>>op;
        if(op==3){auto sol=vals.end();sol--;g<<*sol<<'\n';}
        else
        {
            int A,B,AS,BS,AD,BD;/// se ocupa camere
            f>>A>>B;B=A+B-1;
            if(op==1)
            {
                auto it=segm.upper_bound(mp(A,-1));
                it--;
                tie(AS,BD)=*it;
                POP(it);
                if(AD<A)PUSH(AD,A-1);
                if(B<BD)PUSH(B+1,BD);
            }
            else
            {
                auto DR=segm.upper_bound(mp(A,-1));
                auto ST=DR;DR--;
                tie(AS,BS)=*ST;
                tie(AD,BD)=*DR;
                if(A==BS+1){POP(ST);A=AS;}
                if(B==AD-1){POP(DR);B=BD;}
                PUSH(A,B);
            }
        }
    }
    return 0;
}