#include // clang-format off #pragma GCC diagnostic ignored "-Wsign-compare" #pragma GCC diagnostic ignored "-Wsign-conversion" #define NDEBUG #define SHOW(...) static_cast(0) //!===========================================================!// //! dP dP dP !// //! 88 88 88 !// //! 88aaaaa88a .d8888b. .d8888b. .d888b88 .d8888b. 88d888b. !// //! 88 88 88ooood8 88' '88 88' '88 88ooood8 88' '88 !// //! 88 88 88. ... 88. .88 88. .88 88. ... 88 !// //! dP dP '88888P' '88888P8 '88888P8 '88888P' dP !// //!===========================================================!// template T read() { T v; return std::cin >> v, v; } template std::vector readVec(const std::size_t l) { std::vector v(l); for (auto& e : v) { std::cin >> e; } return v; } using ld = long double; using uint = unsigned int; using ll = long long; using ull = unsigned long long; constexpr unsigned int MOD = 1000000007; template constexpr T INF = std::numeric_limits::max() / 4; template constexpr F PI = static_cast(3.1415926535897932385); std::mt19937 mt{std::random_device{}()}; template bool chmin(T& a, const T& b) { return (a > b ? a = b, true : false); } template bool chmax(T& a, const T& b) { return (a < b ? a = b, true : false); } template std::vector Vec(const std::size_t n, T v) { return std::vector(n, v); } template auto Vec(const std::size_t n, Args... args) { return std::vector(n, Vec(args...)); } template constexpr T popCount(const T u) { #ifdef __has_builtin return u == 0 ? T(0) : (T)__builtin_popcountll(u); #else unsigned long long v = static_cast(u); return v = (v & 0x5555555555555555ULL) + (v >> 1 & 0x5555555555555555ULL), v = (v & 0x3333333333333333ULL) + (v >> 2 & 0x3333333333333333ULL), v = (v + (v >> 4)) & 0x0F0F0F0F0F0F0F0FULL, static_cast(v * 0x0101010101010101ULL >> 56 & 0x7f); #endif } template constexpr T log2p1(const T u) { #ifdef __has_builtin return u == 0 ? T(0) : T(64 - __builtin_clzll(u)); #else unsigned long long v = static_cast(u); return v = static_cast(v), v |= (v >> 1), v |= (v >> 2), v |= (v >> 4), v |= (v >> 8), v |= (v >> 16), v |= (v >> 32), popCount(v); #endif } template constexpr T clog(const T v) { return v == 0 ? T(0) : log2p1(v - 1); } template constexpr T msbp1(const T v) { return log2p1(v); } template constexpr T lsbp1(const T v) { #ifdef __has_builtin return __builtin_ffsll(v); #else return v == 0 ? T(0) : popCount((v & (-v)) - T(1)) + T(1); #endif } template constexpr bool ispow2(const T v) { return popCount(v) == 1; } template constexpr T ceil2(const T v) { return v == 0 ? T(1) : T(1) << log2p1(v - 1); } template constexpr T floor2(const T v) { return v == 0 ? T(0) : T(1) << (log2p1(v) - 1); } //!===================================================================!// //! .d88888b d888888P !// //! 88. "' 88 !// //! 'Y88888b. .d8888b. .d8888b. 88 88d888b. .d8888b. .d8888b. !// //! '8b 88ooood8 88' '88 88 88' '88 88ooood8 88ooood8 !// //! d8' .8P 88. ... 88. .88 88 88 88. ... 88. ... !// //! Y88888P '88888P' '8888P88 dP dP '88888P' '88888P' !// //! .88 !// //! d8888P !// //!===================================================================!// template class SegTree { public: using ValType = typename ValMonoid::ValType; SegTree(const std::size_t N, const ValType initial = ValMonoid::id()) : size(N), half(ceil2(size)), val(half << 1, ValMonoid::id()) { if (initial != ValMonoid::id()) { std::fill(val.begin() + half, val.end(), initial); for (std::size_t i = half - 1; i >= 1; i--) { up(i); } } } template SegTree(const InIt first, const InIt last) : size(std::distance(first, last)), half(ceil2(size)), val(half << 1, ValMonoid::id()) { std::copy(first, last, val.begin() + half); for (std::size_t i = half - 1; i >= 1; i--) { up(i); } } ValType get(const std::size_t a) const { return assert(a < size), val[a + half]; } void set(std::size_t a, const ValType& v) { assert(a < size); val[a += half] = v; while (a >>= 1) { up(a); } } ValType fold(std::size_t L, std::size_t R) const { assert(L < R), assert(R <= size); ValType accl = ValMonoid::id(), accr = ValMonoid::id(); for (L += half, R += half; L < R; L >>= 1, R >>= 1) { if (L & 1) { accl = acc(accl, val[L++]); } if (R & 1) { accr = acc(val[--R], accr); } } return acc(accl, accr); } friend std::ostream& operator<<(std::ostream& os, const SegTree& seg) { os << "["; for (std::size_t i = seg.half; i < seg.half + seg.size; i++) { os << seg.val[i] << (i + 1 == seg.half + seg.size ? "" : ","); } return (os << "]\n"); } private: void up(const std::size_t i) { val[i] = acc(val[i << 1], val[i << 1 | 1]); } const std::size_t size, half; std::vector val; const ValMonoid acc{}; }; //!======================================================================================!// //! a88888b. .d88888b d888888P !// //! d8' '88 88. "' 88 !// //! 88 .d8888b. 'Y88888b. .d8888b. .d8888b. 88 88d888b. .d8888b. .d8888b. !// //! 88 88' '88 '8b 88ooood8 88' '88 88 88' '88 88ooood8 88ooood8 !// //! Y8. .88 88. .88 d8' .8P 88. ... 88. .88 88 88 88. ... 88. ... !// //! Y88888P' '88888P' Y88888P '88888P' '8888P88 dP dP '88888P' '88888P' !// //! .88 !// //! d8888P !// //!======================================================================================!// template class CoSegTree { public: using OpType = typename OpMonoid::OpType; CoSegTree(const std::size_t N, const OpType& initial = OpMonoid::id()) : size(N), depth(clog(size)), half(1 << depth), op(half << 1, OpMonoid::id()) { if (initial != OpMonoid::id()) { std::fill(op.begin() + half, op.end(), initial); } } template CoSegTree(const InIt first, const InIt last) : size(std::distance(first, last)), depth(clog(size)), half(ceil2(size)), op(half << 1, OpMonoid::id()) { std::copy(first, last, op.begin() + half); } OpType get(const std::size_t a) const { assert(a < size); OpType ans = OpMonoid::id(); for (std::size_t i = 0; i <= depth; i++) { ans = compose(ans, op[(a + half) >> (depth - i)]); } return ans; } void act(std::size_t L, std::size_t R, const OpType& f) { assert(L < R), assert(R <= size); cleanup(L += half), cleanup(R += half); for (; L < R; L >>= 1, R >>= 1) { if (L & 1) { update(L++, f); } if (R & 1) { update(--R, f); } } } friend std::ostream& operator<<(std::ostream& os, const CoSegTree& seg) { os << "["; for (std::size_t i = 0; i < seg.size; i++) { os << seg.get(i) << (i + 1 == seg.size ? "" : ","); } return (os << "]\n"); } private: void down(const std::size_t a) { update(a << 1, op[a]), update(a << 1 | 1, op[a]), op[a] = OpMonoid::id(); } void cleanup(const std::size_t a) { const std::size_t b = (a / (a & -a)) >> 1; for (std::size_t i = 0; i < depth; i++) { const std::size_t v = a >> (depth - i); if (v > b) { break; } down(v); } } void update(const std::size_t a, const OpType& f) { op[a] = compose(f, op[a]); } const std::size_t size, depth, half; std::vector op; const OpMonoid compose{}; }; //!=======================================================================!// //! dP .d88888b !// //! 88 88. "' !// //! 88 .d8888b. d888888b dP dP 'Y88888b. .d8888b. .d8888b. !// //! 88 88' '88 .d8P' 88 88 '8b 88ooood8 88' '88 !// //! 88 88. .88 .Y8P 88. .88 d8' .8P 88. ... 88. .88 !// //! 88888888P '88888P8 d888888P '8888P88 Y88888P '88888P' '8888P88 !// //! .88 .88 !// //! d8888P d8888P !// //!=======================================================================!// template class LazySeg { public: using ValMonoid = typename MAct::ValMonoid; using OpMonoid = typename MAct::OpMonoid; using ValType = typename ValMonoid::ValType; using OpType = typename OpMonoid::OpType; LazySeg(const std::size_t N, const ValType initial = ValMonoid::id()) : size(N), depth(clog(size)), half(1 << depth), val(half << 1, ValMonoid::id()), op(half << 1, OpMonoid::id()) { if (initial != ValMonoid::id()) { std::fill(val.begin() + half, val.end(), initial); for (std::size_t i = half - 1; i >= 1; i--) { up(i); } } } template LazySeg(const InIt first, const InIt last) : size(std::distance(first, last)), depth(clog(size)), half(1 << depth), val(half << 1, ValMonoid::id()), op(half << 1, OpMonoid::id()) { std::copy(first, last, val.begin() + half); for (std::size_t i = half - 1; i >= 1; i--) { up(i); } } ValType get(const std::size_t a) { return assert(a < size), fold(a, a + 1); } void set(std::size_t a, const ValType& v) { assert(a < size); topDown(a += half), op[a] = OpMonoid::id(), val[a] = v; while (a >>= 1) { up(a); } } ValType fold(std::size_t L, std::size_t R) { assert(L < R); assert(R <= size); topDown(L += half), topDown(R += half); ValType accl = ValMonoid::id(), accr = ValMonoid::id(); for (; L < R; L >>= 1, R >>= 1) { if (L & 1) { accl = acc(accl, val[L++]); } if (R & 1) { accr = acc(val[--R], accr); } } return acc(accl, accr); } void act(std::size_t L, std::size_t R, const OpType& f) { assert(L < R), assert(R <= size); const std::size_t l = L + half, r = R + half; topDown(L += half), topDown(R += half); for (std::size_t ls = 1, rs = 1; L < R; L >>= 1, R >>= 1, ls <<= 1, rs <<= 1) { if (L & 1) { update(L++, f, ls); } if (R & 1) { update(--R, f, rs); } } bottomUp(l), bottomUp(r); } friend std::ostream& operator<<(std::ostream& os, LazySeg& lseg) { os << "["; for (std::size_t i = 0; i < lseg.size; i++) { os << lseg.get(i) << (i + 1 == lseg.size ? "" : ","); } return (os << "]\n"); } private: void up(const std::size_t i) { val[i] = acc(val[i << 1], val[i << 1 | 1]); } void update(const std::size_t a, const OpType& f, const std::size_t l) { op[a] = compose(f, op[a]), val[a] = eval(f, val[a], l); } void down(const std::size_t a, const std::size_t l) { update(a << 1, op[a], l >> 1), update(a << 1 | 1, op[a], l >> 1), op[a] = OpMonoid::id(); } void topDown(const std::size_t a) { const std::size_t b = (a / (a & -a)) >> 1; for (std::size_t i = 0, l = half; i < depth; i++, l >>= 1) { const std::size_t v = a >> (depth - i); if (v > b) { break; } down(v, l); } } void bottomUp(std::size_t a) { a = (a / (a & -a)) >> 1; for (; a >= 1; a >>= 1) { up(a); } } const std::size_t size, depth, half; std::vector val; std::vector op; const ValMonoid acc{}; const OpMonoid compose{}; const MAct eval{}; }; //!=================================================!// //! 8888ba.88ba oo dP dP !// //! 88 '8b '8b 88 88 !// //! 88 88 88 dP 88d888b. 88 88d888b. .d888b88 !// //! 88 88 88 88 88' '88 88 88' '88 88' '88 !// //! 88 88 88 88 88 88 88 88 88 88. .88 !// //! dP dP dP dP dP dP dP dP dP '88888P8 !// //!=================================================!// template struct MinInd { using ValType = std::pair; ValType operator()(const ValType& a, const ValType& b) const { return std::min(a, b); } static constexpr ValType id() { return ValType{std::numeric_limits::max(), std::numeric_limits::max()}; } }; // clang-format on //!=====================================!// //! 8888ba.88ba oo !// //! 88 '8b '8b !// //! 88 88 88 .d8888b. dP 88d888b. !// //! 88 88 88 88' '88 88 88' '88 !// //! 88 88 88 88. .88 88 88 88 !// //! dP dP dP '88888P8 dP dP dP !// //!=====================================!// int main() { const int N = read(), Q = read(); const auto a = readVec(N); std::vector::ValType> v(N); for (int i = 0; i < N; i++) { v[i] = {a[i], i}; } SegTree> seg(v.begin(), v.end()); for (int i = 0; i < Q; i++) { const int t = read(), l = read(), r = read(); if (t == 1) { const auto L = seg.get(l - 1), R = seg.get(r - 1); seg.set(l - 1, {R.first, l - 1}), seg.set(r - 1, {L.first, r - 1}); } else { std::cout << seg.fold(l - 1, r).second + 1 << std::endl; } } return 0; }