#include #include #include using namespace std; template class segTree { private: const T e; int num; std::vector dat; T (*const eval)(T &, T &) {}; public: segTree(std::vector &v, T E, T (*func)(T &, T &)) : e(E), eval(func) { int siz = static_cast(v.size()); for (num = 1; num < siz; num <<= 1); dat = std::vector (2 * num - 1, e); for (int i = 0; i < siz; ++i) dat[i + num - 1] = v[i]; for (int i = num - 2; i >= 0; --i) dat[i] = eval(dat[i * 2 + 1], dat[i * 2 + 2]); } segTree(int n, T E, T (*func)(T &, T &)) : e(E), eval(func) { for (num = 1; num < n; num <<= 1); dat = std::vector (2 * num - 1, e); } void update_a(int i, T val) { for (i += num - 1, dat[i] = val; i != 0;) { i = (i - 1) / 2; dat[i] = eval(dat[i * 2 + 1], dat[i * 2 + 2]); } } void update_r(int i, T val) { for (i += num - 1, dat[i] = eval(dat[i], val); i != 0;) { i = (i - 1) / 2; dat[i] = eval(dat[i * 2 + 1], dat[i * 2 + 2]); } } T getval(int left, int right) { left = max(0, left), right = min(num, right); T ansl = e, ansr = e; for (left += num - 1, right += num - 1; left < right; left >>= 1, right >>= 1) { if (!(left & 1)) ansl = eval(ansl, dat[left]); if (--right & 1) ansr = eval(dat[right], ansr); } return eval(ansl, ansr); } T getval(int id) {return dat[num - 1 + id];} }; int main() { int n, q; cin >> n >> q; segTree sgl(n, 2e9, [](int &a, int &b) -> int {return min(a, b);}); segTree sgr(n, 2e9, [](int &a, int &b) -> int {return min(a, b);}); while (q--) { int t; cin >> t; if (t == 1) { int x; cin >> x; int ans = x - 1; --x; ans = min(ans, sgl.getval(0, x) - (n - x)); ans = min(ans, sgr.getval(x, n) - x); cout << ans << endl; } else if (t == 2) { int x, c; cin >> x >> c; --x; sgl.update_r(x, c + (n - x)); sgr.update_r(x, c + x); } } }