#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")

#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using pll = pair<ll, ll>;
using pii = pair<int, int>;
using mint = modint998244353;
constexpr ll mod = 998244353;
using MINT = modint1000000007;
constexpr ll MOD = 1000000007;
int dx[4] = {1, 0, -1, 0};
int dy[4] = {0, 1, 0, -1};

template <typename T>
void print(vector<T> A);

int main()
{
    ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    int N, Q;
    cin >> N >> Q;
    vector<int> Paper(N, 0);
    int ans=N;
    map<int, pii> queries;
    for (int i = 1; i <= Q; i++) {
        int t;
        cin >> t;
        if (t == 1) {
            int l, r;
            cin >> l >> r;
            l--;
            r--;
            queries[i]={l,r};
            for (int j = l; j < r; j++) {
                if (Paper[j] == 0) {
                    ans--;
                }
                Paper[j]++;
            }
        } else if (t == 2) {
            int q;
            cin >> q;
            auto [l, r] = queries[q];
            for (int j = l; j < r; j++) {
                if (Paper[j] == 1) {
                    ans++;
                }
                Paper[j]--;
            }
        } else {
            cout<<ans<<endl;
        }

    }
}

template <typename T>
void print(vector<T> A)
{
    for (int i = 0; i < A.size() - 1; i++)
    {
        cout << A[i] << ' ';
    }
    cout << A[A.size() - 1] << endl;
    return;
}