結果
| 問題 | No.875 Range Mindex Query |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2025-02-19 20:22:23 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 226 ms / 2,000 ms |
| コード長 | 5,472 bytes |
| コンパイル時間 | 3,947 ms |
| コンパイル使用メモリ | 289,688 KB |
| 実行使用メモリ | 6,528 KB |
| 最終ジャッジ日時 | 2025-02-19 20:22:31 |
| 合計ジャッジ時間 | 7,488 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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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;
template <typename T> using min_priority_queue = priority_queue<T,vector<T>,greater<T>>;
random_device seed_gen;
mt19937 engine(seed_gen());
int64_t get_time(){
struct::timespec t;
clock_gettime(CLOCK_MONOTONIC, &t);
return t.tv_sec * int64_t(1'000'000'000) + t.tv_nsec;
}
template<typename T>
void invec(vector<T> &v){
for(auto &i : v) cin >> i;
return;
}
template<typename T>
void outvec(vector<T> &v, string s = " "){
bool b = false;
for(auto i : v){
if(b) cout << s;
else b = true;
cout << i;
}
cout << endl;
return;
}
template <typename T>
bool chmin(T &a, const T& b) {
if (a > b) {
a = b; // aをbで更新
return true;
}
return false;
}
template <typename T>
bool chmax(T &a, const T& b) {
if (a < b) {
a = b; // aをbで更新
return true;
}
return false;
}
template<typename T>
class segtree {
private:
int n;
vector<T> tree;
function<T(T, T)> op;
T identity;
public:
segtree(int n_, function<T(T, T)> op_, T identity_)
: op(op_), identity(identity_) {
int x = 1;
while(x < n_) x *= 2;
n = x;
tree.resize(n * 2 - 1, identity);
}
void build(vector<T> &data) {
assert(data.size() <= n);
for (int i = 0; i < data.size(); i++) {
tree[i + n - 1] = data[i];
}
for (int i = n - 2; i >= 0; i--) {
tree[i] = op(tree[i * 2 + 1], tree[i * 2 + 2]);
}
}
void update(int i, T value) {
i += n - 1;
tree[i] = value;
while (i > 0) {
i = (i - 1) / 2;
tree[i] = op(tree[i * 2 + 1], tree[i * 2 + 2]);
}
}
T query_sub(int a, int b, int i, int l, int r) {
if(r <= a || b <= l) {
return identity;
}
else if(a <= l && r <= b) {
return tree[i];
}
else {
T res_l = query_sub(a, b, i * 2 + 1, l, (l + r) / 2);
T res_r = query_sub(a, b, i * 2 + 2, (l + r) / 2, r);
return op(res_l, res_r);
}
}
T query(int a, int b) {
return query_sub(a, b, 0, 0, n);
}
class reference {
private:
segtree &seg;
int idx;
public:
reference(segtree& seg, int idx) : seg(seg), idx(idx) {}
reference& operator=(const T& value) {
seg.update(idx, value);
return *this;
}
operator T() const {
return seg.query(idx, idx + 1);
}
};
reference operator[](int idx) {
return reference(*this, idx);
}
};
bool yn(bool b){
if(b) cout << "Yes" << endl;
else cout << "No" << endl;
return b;
}
bool check_with_simple_solution;
bool calc_time;
bool random_input;
bool debug_output;
int num_of_testcase;
using ans_type = int;
void input(){
if(num_of_testcase > 1){
}
if(random_input){
}
else{
}
return;
}
void output_input(){
return;
}
void pre_solve(){
return;
}
using pi = pair<int,int>;
pi e = {1<<30,1<<30};
pi op(pi x, pi y) {
return min(x, y);
}
void swap(segtree<pi> &S, int i, int j) {
int x = ((pi)S[i]).first;
int y = ((pi)S[j]).first;
S[i] = {y, i};
S[j] = {x, j};
return;
}
ans_type solve(){
int n, q; cin >> n >> q;
vector<int> A(n); invec(A);
vector<pi> B(n);
for(int i = 0; i < n; i++) {
B[i] = {A[i], i};
}
segtree<pi> S(n, op, e);
S.build(B);
for(int i = 0; i < q; i++) {
int t; cin >> t;
if(t == 1) {
int l, r; cin >> l >> r;
l--; r--;
swap(S, l, r);
}
else {
int l, r; cin >> l >> r;
l--;
cout << S.query(l, r).second + 1 << endl;
}
}
return ans_type();
}
ans_type solve_simple(){
return ans_type();
}
void output(ans_type ans){
return;
}
int main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout << fixed << setprecision(20);
check_with_simple_solution = 0;
calc_time = 0;
random_input = 0;
debug_output = 0;
num_of_testcase = 1;
if(num_of_testcase == 0) cin >> num_of_testcase;
pre_solve();
if(check_with_simple_solution){
for(int i = 0; i < num_of_testcase; i++){
if(debug_output) cout << "begin case " << i << " " << string(16, '=') << endl;
input();
ans_type ans = solve();
if(debug_output) cout << string(16, '=') << endl;
ans_type ans_simple = solve_simple();
if(ans != ans_simple){
cout << "input: " << endl;
output_input();
cout << "output: " << endl;
output(ans);
cout << "expected: " << endl;
output(ans_simple);
}
if(debug_output) cout << "end case " << i << " " << string(16, '=') << endl;
}
}
else{
int64_t time_start = get_time();
for(int i = 0; i < num_of_testcase; i++){
input();
output(solve());
}
int64_t time_end = get_time();
if(calc_time){
double time_per_case = (time_end - time_start) / (1e9 * num_of_testcase);
cout << fixed << setprecision(3) << time_per_case << "[second/case]" << endl;
}
}
return 0;
}