#include <iostream>
#include <fstream>
using namespace std;

int main()
{
    int n,i,c,oc=0,p,m;
    ifstream f("hotel.in");
    ofstream g("hotel.out");
    f >> n >> p;
    for (i=1;i<=p;i++)
    {
        f >> c;
        if (c==3)
           g << n - oc << endl;
        if (c==2)
           {
               f >> m >> m;
               oc-=m;
           }
        if (c==1)
        {
            f >> m >> m;
            oc+=m;
        }

    }
    return 0;
}