#include #define rep(i,a,b) for(int i=a;i=b;i--) #define fore(i,a) for(auto &i:a) #define all(x) (x).begin(),(x).end() //#pragma GCC optimize ("-O3") using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); } typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60; templatebool chmax(T& a, const T& b) { if (a < b) { a = b; return 1; } return 0; } templatebool chmin(T& a, const T& b) { if (b < a) { a = b; return 1; } return 0; } //--------------------------------------------------------------------------------------------------- #define def infl template struct SegTree { //[l,r) V comp(V& l, V& r) { return min(l, r); }; vector val; SegTree() { val = vector(NV * 2, def); } V get(int x, int y, int l = 0, int r = NV, int k = 1) { if (r <= x || y <= l)return def; if (x <= l && r <= y)return val[k]; auto a = get(x, y, l, (l + r) / 2, k * 2); auto b = get(x, y, (l + r) / 2, r, k * 2 + 1); return comp(a, b); } void update(int i, V v) { i += NV; val[i] = v; while (i>1) i >>= 1, val[i] = comp(val[i * 2], val[i * 2 + 1]); } void add(int i, V v) { update(i, val[i + NV] + v); } V operator[](int x) { return get(x, x + 1); } }; /*---------------------------------------------------------------------------------------------------             ∧_∧       ∧_∧  (´<_` )  Welcome to My Coding Space!      ( ´_ゝ`) /  ⌒i @hamayanhamayan     /   \    | |     /   / ̄ ̄ ̄ ̄/  |   __(__ニつ/  _/ .| .|____      \/____/ (u ⊃ ---------------------------------------------------------------------------------------------------*/ int N, Q; SegTree lft; SegTree rht; void _main() { cin >> N >> Q; rep(_, 0, Q) { int t; cin >> t; if (t == 1) { int x; cin >> x; x--; ll ans = x; chmin(ans, lft.get(0, x) + x); // 左側のテレポーターを使った場合 chmin(ans, rht.get(x, N) - x); // 右側のテレポーターを使った場合 cout << ans << endl; } else { int x, c; cin >> x >> c; x--; // lft ll cost = -x + c; if (cost < lft.get(x, x + 1)) lft.update(x, cost); // rht cost = x + c; if (cost < rht.get(x, x + 1)) rht.update(x, cost); } } }