結果
| 問題 | No.875 Range Mindex Query |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2019-12-17 12:45:53 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.89.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 4,389 bytes |
| 記録 | |
| コンパイル時間 | 2,446 ms |
| コンパイル使用メモリ | 197,072 KB |
| 最終ジャッジ日時 | 2025-01-08 11:51:19 |
|
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 3 WA * 15 |
ソースコード
#include <bits/stdc++.h>
#define LLI long long int
#define FOR(v, a, b) for(LLI v = (a); v < (b); ++v)
#define FORE(v, a, b) for(LLI v = (a); v <= (b); ++v)
#define REP(v, n) FOR(v, 0, n)
#define REPE(v, n) FORE(v, 0, n)
#define REV(v, a, b) for(LLI v = (a); v >= (b); --v)
#define ALL(x) (x).begin(), (x).end()
#define RALL(x) (x).rbegin(), (x).rend()
#define ITR(it, c) for(auto it = (c).begin(); it != (c).end(); ++it)
#define RITR(it, c) for(auto it = (c).rbegin(); it != (c).rend(); ++it)
#define EXIST(c,x) ((c).find(x) != (c).end())
#define fst first
#define snd second
#define popcount __builtin_popcount
#define UNIQ(v) (v).erase(unique(ALL(v)), (v).end())
#define bit(i) (1LL<<(i))
#ifdef DEBUG
#include <misc/C++/Debug.cpp>
#else
#define dump(...) ((void)0)
#endif
#define gcd __gcd
using namespace std;
template <class T> constexpr T lcm(T m, T n){return m/gcd(m,n)*n;}
template <typename I> void join(ostream &ost, I s, I t, string d=" "){for(auto i=s; i!=t; ++i){if(i!=s)ost<<d; ost<<*i;}ost<<endl;}
template <typename T> istream& operator>>(istream &is, vector<T> &v){for(auto &a : v) is >> a; return is;}
template <typename T, typename U> bool chmin(T &a, const U &b){return (a>b ? a=b, true : false);}
template <typename T, typename U> bool chmax(T &a, const U &b){return (a<b ? a=b, true : false);}
template <typename T, size_t N, typename U> void fill_array(T (&a)[N], const U &v){fill((U*)a, (U*)(a+N), v);}
struct Init{
Init(){
cin.tie(0);
ios::sync_with_stdio(false);
}
}init;
template <typename T, typename Func>
class SegmentTree{
protected:
const int depth, size, hsize;
const T e;
const Func f;
std::vector<T> data;
public:
SegmentTree(int n, const T &e, const Func &f):
depth(n > 1 ? 32-__builtin_clz(n-1) + 1 : 1),
size((1 << depth) - 1),
hsize(size / 2 + 1),
e(e),
f(f),
data(size + 1, e)
{}
inline T operator[](int i) const {
return at(i);
}
inline T at(int i) const {
return data[hsize + i];
}
inline T get(int x, int y) const { // [x,y)
int l = x + hsize, r = y + hsize;
T ret = e;
// must be commutative
while(l < r){
if(r & 1) ret = f(ret, data[--r]);
if(l & 1) ret = f(ret, data[l++]);
l >>= 1, r >>= 1;
}
return ret;
}
inline void update(int i, const T &x){
i += hsize;
data[i] = x;
while(i > 1){
i >>= 1;
data[i] = f(data[i << 1 | 0], data[i << 1 | 1]);
}
}
inline void init(const T &val){
data.assign(size + 1, e);
for(int i = 0; i < hsize; ++i) data[hsize + i] = val;
for(int i = hsize-1; i >= 1; --i){
data[i] = f(data[i << 1 | 0], data[i << 1 | 1]);
}
}
inline void init_with_vector(const std::vector<T> &val){
data.assign(size + 1, e);
for(int i = 0; i < (int)val.size(); ++i) data[hsize + i] = val[i];
for(int i = hsize-1; i >= 1; --i){
data[i] = f(data[i << 1 | 0], data[i << 1 | 1]);
}
}
void debug(){
#ifdef DEBUG
std::cerr << "{";
for(int i = 0; i < hsize; ++i){
if(i) std::cerr << ",";
std::cerr << data[hsize + i];
}
std::cerr << "}" << std::endl;
#endif
}
};
template <typename T, typename Func>
class SegmentTreeRangeArgmin : public SegmentTree<std::pair<T, int>, Func>{
using super = SegmentTree<std::pair<T, int>, Func>;
public:
SegmentTreeRangeArgmin(int n, const std::pair<T, int> &e, const Func &f): super(n, e, f){}
inline void update(int i, const T &val){
super::update(i, std::make_pair(val, i));
}
};
template <typename T>
auto make_segment_tree_range_argmin(int size, const T &e){
auto f =
[](const auto &a, const auto &b){
if(a.first == b.first){
return std::make_pair(std::min(a.first, b.first), std::min(a.second, b.second));
}else{
return std::min(a, b);
}
};
return SegmentTreeRangeArgmin<T, decltype(f)>(size, std::make_pair(e, INT_MAX), f);
}
int main(){
int N,Q; cin >> N >> Q;
auto seg = make_segment_tree_range_argmin(N, INT_MAX);
REP(i,N){
int a; cin >> a;
seg.update(i, a);
}
REP(i,Q){
int c; cin >> c;
int l,r; cin >> l >> r;
--l, --r;
if(c == 1){
auto a = seg.at(l).fst;
auto b = seg.at(r).snd;
seg.update(l, b);
seg.update(r, a);
}else{
auto ans = seg.get(l,r+1);
cout << ans.second+1 << endl;
}
}
}