#include<stdio.h>
#define nmax 100005
#define pmax 263000
long a, b, n, p, i, op, rez, lg;
long lgst[pmax], lgdr[pmax];

void update(long st, long dr, long nod)
{
    long mjc;

    if ((a<=st)&&(dr<=b))
        if (op==1)
            lgst[nod]=lgdr[nod]=0;
        else
            lgst[nod]=lgdr[nod]=dr-st+1;
    mjc=(st+dr)/2;
    if (st<dr)
    {
        if ((a<=mjc)&&(b>=st))
            update(st,mjc,2*nod);
        if ((a<=dr)&&(b>=mjc+1))
            update(mjc+1,dr,2*nod+1);
        lgst[nod]=lgst[2*nod];
        if (lgst[2*nod]==mjc-st+1)  //gol
            lgst[nod]=lgst[2*nod]+lgst[2*nod+1];
        lgdr[nod]=lgdr[2*nod+1];
        if (lgdr[2*nod+1]==dr-(mjc+1)+1)    //gol
            lgdr[nod]=lgdr[2*nod]+lgdr[2*nod+1];
        if (rez<lgst[nod])
            rez=lgst[nod];
        if (rez<lgdr[nod])
            rez=lgdr[nod];
        if (rez<lgdr[2*nod]+lgst[2*nod+1])
            rez=lgdr[2*nod]+lgst[2*nod+1];
    }
}

int main()
{
    freopen("hotel.in","r",stdin);
    freopen("hotel.out","w",stdout);
    scanf("%ld %ld",&n,&p);
    op=2;   a=1;   b=n;   update(1,n,1);
    for (i=1;i<=p;i++)
    {
        scanf("%ld",&op);
        if (op==1)
        {
            scanf("%ld %ld",&a,&lg);
            b=a+lg-1;   rez=0;
            update(1,n,1);
        }
        if (op==2)
        {
            scanf("%ld %ld",&a,&lg);
            b=a+lg-1;   rez=0;
            update(1,n,1);
        }
        if (op==3)
        {
            printf("%ld\n",rez);
        }

    }
    return 0;
}