結果
| 問題 |
No.875 Range Mindex Query
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2019-09-06 21:31:32 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 60 ms / 2,000 ms |
| コード長 | 4,736 bytes |
| コンパイル時間 | 1,514 ms |
| コンパイル使用メモリ | 172,564 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-06-24 16:54:25 |
| 合計ジャッジ時間 | 2,919 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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| 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"
// Begin Header {{{
#define let const auto
#define all(x) (x).begin(), (x).end()
#define rep(i, n) for (i64 i = 0, i##_limit = (n); i < i##_limit; ++i)
#define reps(i, s, t) for (i64 i = (s), i##_limit = (t); i <= i##_limit; ++i)
#define repr(i, s, t) for (i64 i = (s), i##_limit = (t); i >= i##_limit; --i)
#define var(Type, ...) Type __VA_ARGS__; input(__VA_ARGS__)
#define lowerBound(...) lowerBound_(__VA_ARGS__)
#define upperBound(...) upperBound_(__VA_ARGS__)
#define lowerBound_(begin, end, ...) (lower_bound((begin), (end), __VA_ARGS__) - (begin))
#define upperBound_(begin, end, ...) (upper_bound((begin), (end), __VA_ARGS__) - (begin))
#ifdef DBG
#define trace(...) trace_g(#__VA_ARGS__, __VA_ARGS__)
#else
#define trace(...)
#endif
using namespace std;
using i64 = int_fast64_t;
using pii = pair<i64, i64>;
template<class T, class U>inline bool chmax(T &a, const U &b){return b>a && (a=b, true);}
template<class T, class U>inline bool chmin(T &a, const U &b){return b<a && (a=b, true);}
inline i64 sigma(i64 n) { return (n * (n + 1) >> 1); }
inline i64 updiv(i64 a, i64 b) { return (a + b - 1) / b; }
inline i64 sqr(i64 n) { return n * n; }
inline string to_string(char c) { return string(1, c); }
inline bool isRangeIn(i64 a, i64 low, i64 high) { return (low <= a && a <= high); }
constexpr int INF = 0x3f3f3f3f;
constexpr i64 LINF = 0x3f3f3f3f3f3f3f3fLL;
template<class T>
vector<T> makeVec(size_t sz) { return vector<T>(sz); }
template<class T, class... Args>
auto makeVec(size_t sz, Args... args) {
return vector<decltype(makeVec<T>(args...))>(sz, makeVec<T>(args...));
}
template<class T>
inline void input(T &x) { cin >> x; }
template<class Head, class... Tail>
inline void input(Head &head, Tail&... tail) { cin >> head; input(tail...); }
inline void print() { cout << "\n"; }
template<class Head, class... Tail>
inline void print(Head &&head, Tail&&... tail) {
cout << head;
if (sizeof...(tail)) cout << ' ';
print(forward<Tail>(tail)...);
}
template<class T>
ostream& operator<< (ostream &out, const vector<T> &vec) {
static constexpr const char *delim[] = { " ", "" };
for (const auto &e : vec) out << e << delim[&e == &vec.back()];
return out;
}
template<class T>
ostream& operator<< (ostream &out, const vector<vector<T>> &mat) {
static constexpr const char *tail[] = { "\n", "" };
for (const auto &row : mat) out << row << tail[&row == &mat.back()];
return out;
}
template <class T>
void trace_g(const char *s, T&& x) {
clog << '{';
while(*s != '\0') clog << *(s++);
clog << ":" << setw(3) << x << '}' << endl;
}
template <class Head, class... Tail>
void trace_g(const char *s, Head&& head, Tail&&... tail) {
clog << '{';
while(*s != ',') clog << *(s++);
clog << ":" << setw(3) << head << "}, ";
for (++s; !isgraph(*s); ++s);
trace_g(s, std::forward<Tail>(tail)...);
}
// }}} End Header
template<class Monoid> struct SegmentTree { // {{{
using Func = function<Monoid(Monoid, Monoid)>;
const int sz;
const Func merge;
const Monoid unity;
vector<Monoid> dat;
SegmentTree(int n, const Monoid &u, Func f)
: sz(1 << (__lg(n+5) + 1)), merge(f), unity(u), dat(sz*2, unity) {}
void set(int k, const Monoid &v) { dat[k + sz] = v; }
Monoid& operator[] (int k) { return dat[k + sz]; }
const Monoid& operator[] (int k) const { return dat[k + sz]; }
void build() { for (int k = sz-1; k > 0; --k) dat[k] = merge(dat[2*k], dat[2*k+1]); }
void update(int k, const Monoid &v) {
dat[ k += sz ] = v;
while(k >>= 1) dat[k] = merge(dat[2*k], dat[2*k+1]);
}
Monoid query(int a, int b) const {
Monoid L = unity, R = unity;
for (a += sz, b += sz; a < b; a >>= 1, b >>= 1) {
if (a & 1) L = merge(L, dat[a++]);
if (b & 1) R = merge(dat[--b], R);
}
return merge(L, R);
}
}; // }}}
signed main()
{
ios::sync_with_stdio(false); cin.tie(nullptr);
var(int, N, Q);
vector<int> idx(N + 1);
SegmentTree<int> seg(N, INF, [](int a, int b){ return min(a, b);} );
reps(i, 1, N) {
var(int, a);
idx[a] = i;
seg.set(i, a);
}
seg.build();
while (Q--) {
var(int, com, l, r);
if (com == 1) {
let beforeL = seg[l];
let beforeR = seg[r];
seg.update(l, beforeR);
seg.update(r, beforeL);
idx[beforeL] = r;
idx[beforeR] = l;
} else {
let minv = seg.query(l, r + 1);
print(idx[minv]);
}
}
return 0;
}