#include #include using namespace std; using namespace atcoder; //using mint = modint1000000007; //const int mod = 1000000007; //using mint = modint998244353; //const int mod = 998244353; const int INF = 1e9; //const long long LINF = 1e18; #define rep(i, n) for (int i = 0; i < (n); ++i) #define rep2(i,l,r)for(int i=(l);i<(r);++i) #define rrep(i, n) for (int i = (n) - 1; i >= 0; --i) #define rrep2(i,l,r)for(int i=(r) - 1;i>=(l);--i) #define all(x) (x).begin(),(x).end() #define allR(x) (x).rbegin(),(x).rend() #define P pair template inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; } template inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; } struct S { int val; int count; }; S op(S sl, S sr) { if (sl.val > sr.val)return sr; else if (sl.val < sr.val)return sl; return { sl.val,sr.count + sl.count }; } S e() { return S{ INF, 0 }; } S mapping(int f, S x) { return{ x.val + f,x.count }; } int composition(int f, int g) { return f + g; } int id() { return 0; } int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int n, q; cin >> n >> q; vectorv(n - 1, { 0,1 }); lazy_segtree seg(v); vector

que(q); rep(i, q) { int t; cin >> t; if (t == 1) { int l, r; cin >> l >> r; l--, r--; seg.apply(l, r, 1); que[i] = { l,r }; } else if (t == 2) { int idx; cin >> idx; idx--; seg.apply(que[idx].first, que[idx].second, -1); } else { auto get = seg.all_prod(); if (get.val == 0) { cout << get.count + 1 << endl; } else { cout << 1 << endl; } } } return 0; }