結果
| 問題 |
No.875 Range Mindex Query
|
| コンテスト | |
| ユーザー |
 Pachicobue
|
| 提出日時 | 2019-09-06 21:25:42 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 283 ms / 2,000 ms |
| コード長 | 14,427 bytes |
| コンパイル時間 | 2,102 ms |
| コンパイル使用メモリ | 202,712 KB |
| 最終ジャッジ日時 | 2025-01-07 16:41:42 |
|
ジャッジサーバーID （参考情報） |
judge5 / judge1 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 18 |
ソースコード
#include <bits/stdc++.h>
// clang-format off
#pragma GCC diagnostic ignored "-Wsign-compare"
#pragma GCC diagnostic ignored "-Wsign-conversion"
#define NDEBUG
#define SHOW(...) static_cast<void>(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 <typename T>
T read()
{
T v;
return std::cin >> v, v;
}
template <typename T>
std::vector<T> readVec(const std::size_t l)
{
std::vector<T> 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 <typename T>
constexpr T INF = std::numeric_limits<T>::max() / 4;
template <typename F>
constexpr F PI = static_cast<F>(3.1415926535897932385);
std::mt19937 mt{std::random_device{}()};
template <typename T>
bool chmin(T& a, const T& b) { return (a > b ? a = b, true : false); }
template <typename T>
bool chmax(T& a, const T& b) { return (a < b ? a = b, true : false); }
template <typename T>
std::vector<T> Vec(const std::size_t n, T v) { return std::vector<T>(n, v); }
template <class... Args>
auto Vec(const std::size_t n, Args... args) { return std::vector<decltype(Vec(args...))>(n, Vec(args...)); }
template <typename T>
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<unsigned long long>(u);
return v = (v & 0x5555555555555555ULL) + (v >> 1 & 0x5555555555555555ULL), v = (v & 0x3333333333333333ULL) + (v >> 2 & 0x3333333333333333ULL), v = (v + (v >> 4)) & 0x0F0F0F0F0F0F0F0FULL, static_cast<T>(v * 0x0101010101010101ULL >> 56 & 0x7f);
#endif
}
template <typename T>
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<unsigned long long>(u);
return v = static_cast<unsigned long long>(v), v |= (v >> 1), v |= (v >> 2), v |= (v >> 4), v |= (v >> 8), v |= (v >> 16), v |= (v >> 32), popCount(v);
#endif
}
template <typename T>
constexpr T clog(const T v) { return v == 0 ? T(0) : log2p1(v - 1); }
template <typename T>
constexpr T msbp1(const T v) { return log2p1(v); }
template <typename T>
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 <typename T>
constexpr bool ispow2(const T v) { return popCount(v) == 1; }
template <typename T>
constexpr T ceil2(const T v) { return v == 0 ? T(1) : T(1) << log2p1(v - 1); }
template <typename T>
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 <typename ValMonoid>
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 <typename InIt>
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<ValType> 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 <typename OpMonoid>
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 <typename InIt>
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<OpType> 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 <typename MAct>
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 <typename InIt>
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<ValType> val;
std::vector<OpType> 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 <typename ElemType>
struct MinInd
{
using ValType = std::pair<ElemType, std::size_t>;
ValType operator()(const ValType& a, const ValType& b) const { return std::min(a, b); }
static constexpr ValType id() { return ValType{std::numeric_limits<ElemType>::max(), std::numeric_limits<std::size_t>::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<int>(), Q = read<int>();
const auto a = readVec<ll>(N);
std::vector<MinInd<ll>::ValType> v(N);
for (int i = 0; i < N; i++) { v[i] = {a[i], i}; }
SegTree<MinInd<ll>> seg(v.begin(), v.end());
for (int i = 0; i < Q; i++) {
const int t = read<int>(), l = read<int>(), r = read<int>();
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;
}