結果
| 問題 |
No.875 Range Mindex Query
|
| コンテスト | |
| ユーザー |
pazzle1230
|
| 提出日時 | 2019-09-06 21:29:35 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 272 ms / 2,000 ms |
| コード長 | 4,654 bytes |
| コンパイル時間 | 1,663 ms |
| コンパイル使用メモリ | 175,772 KB |
| 実行使用メモリ | 9,344 KB |
| 最終ジャッジ日時 | 2024-06-24 16:49:36 |
| 合計ジャッジ時間 | 4,444 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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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>
using namespace std;
#define INF_LL (int64)1e18
#define INF (int32)1e9
#define REP(i, n) for(int64 i = 0;i < (n);i++)
#define FOR(i, a, b) for(int64 i = (a);i < (b);i++)
#define all(x) x.begin(),x.end()
#define fs first
#define sc second
using int32 = int_fast32_t;
using uint32 = uint_fast32_t;
using int64 = int_fast64_t;
using uint64 = uint_fast64_t;
using PII = pair<int32, int32>;
using PLL = pair<int64, int64>;
const double eps = 1e-10;
template<typename A, typename B>inline void chmin(A &a, B b){if(a > b) a = b;}
template<typename A, typename B>inline void chmax(A &a, B b){if(a < b) a = b;}
template<typename T>
vector<T> make_v(size_t a){return vector<T>(a);}
template<typename T,typename... Ts>
auto make_v(size_t a,Ts... ts){
return vector<decltype(make_v<T>(ts...))>(a,make_v<T>(ts...));
}
template<typename T,typename U,typename... V>
typename enable_if<is_same<T, U>::value!=0>::type
fill_v(U &u,const V... v){u=U(v...);}
template<typename T,typename U,typename... V>
typename enable_if<is_same<T, U>::value==0>::type
fill_v(U &u,const V... v){
for(auto &e:u) fill_v<T>(e,v...);
}
template<class ValueMonoid, template<class...> class Container=::std::vector>
class SegTree{
public:
using value_structure = ValueMonoid;
using value_type = typename value_structure::value_type;
using const_reference = const value_type &;
using container_type = Container<value_type>;
using size_type = typename container_type::size_type;
private:
::std::vector<value_type> tree;
size_type size_;
static size_type getsize(const size_type x){
size_type ret = 1;
while(ret < x)
ret <<= 1;
return ret;
}
inline value_type calc(const value_type a, const value_type b){
return value_structure::operation(a, b);
}
inline void calc_node(const size_type index){
if(tree.size() <= (index << 1 | 1)) return;
tree[index] = value_structure::operation(tree[index<<1], tree[index<<1 | 1]);
}
public:
SegTree() : size_(0), tree(){}
SegTree(const size_type size)
: size_(size), tree(size << 1, value_structure::identity()){}
template<class InputIterator>
SegTree(InputIterator first, InputIterator last)
: size_(::std::distance(first, last)){
tree = container_type(size_, value_structure::identity());
tree.insert(tree.end(), first, last);
for(size_type i = size_;i > 0;i--){
calc_node(i);
}
}
size_type size() const { return size_; }
const_reference operator[](const size_type k) const {
assert(k < size_);
return tree[k+size_];
}
value_type query(size_type l, size_type r){
assert(l <= r);
assert(0 <= l && l < size_);
assert(0 <= r && r <= size_);
value_type retl = value_structure::identity(), retr = value_structure::identity();
for(l += size_, r += size_; l < r ; l >>= 1, r >>= 1){
if(l&1) retl = calc(retl, tree[l++]);
if(r&1) retr = calc(tree[--r], retr);
}
return calc(retl, retr);
}
template<class F>
void update(size_type index, const F& f){
assert(0 <= index && index < size());
index += size_;
tree[index] = f(::std::move(tree[index]));
while(index >>= 1)
calc_node(index);
}
/*
template<class F>
size_type search(const F& f) const { // [0, result) is True and [0, result-1) is not.
if(f(value_structure::identity()))
return 0;
if(!f(tree[1]))
return size_+1;
value_type acc = value_structure::identity();
size_type i = 1;
while(i <
}
*/
};
class p1_v {
public:
using value_type = PLL;
static value_type identity() { return PLL(INF_LL, -1); }
static value_type initializer() { return identity(); }
static value_type operation (const value_type& a, const value_type& b) {
if (a <= b) {
return a;
} else {
return b;
}
}
};
int main(void) {
int64 N, Q;
cin >> N >> Q;
vector<PLL> a(N);
REP(i, N) {
cin >> a[i].fs;
a[i].sc = i;
}
SegTree<p1_v> sg(a.begin(), a.end());
REP(i, Q) {
int64 tp, l, r;
cin >> tp >> l >> r;
if (tp == 1) {
PLL vl = sg.query(l-1, l), vr = sg.query(r-1, r);
swap(vl.sc, vr.sc);
sg.update(l-1, [&](PLL a) { return vr; });
sg.update(r-1, [&](PLL a) { return vl; });
} else {
cout << sg.query(l-1, r).sc+1 << endl;
}
}
}
pazzle1230