結果
| 問題 |
No.738 平らな農地
|
| コンテスト | |
| ユーザー |
ats5515
|
| 提出日時 | 2018-09-28 22:47:18 |
| 言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
| 結果 |
AC
|
| 実行時間 | 158 ms / 2,000 ms |
| コード長 | 4,101 bytes |
| コンパイル時間 | 848 ms |
| コンパイル使用メモリ | 93,336 KB |
| 実行使用メモリ | 10,240 KB |
| 最終ジャッジ日時 | 2024-10-12 07:06:04 |
| 合計ジャッジ時間 | 7,428 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 5 |
| other | AC * 87 |
コンパイルメッセージ
main.cpp: In member function ‘std::pair<AVL<T>::node*, long long int> AVL<T>::rank(AVL<T>::node*, long long int) [with T = long long int]’:
main.cpp:118:9: warning: control reaches end of non-void function [-Wreturn-type]
118 | }
| ^
ソースコード
#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <string>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <stdio.h>
using namespace std;
#define int long long
int MOD = 1000000007;
template<typename T>
struct AVL {
struct node {
T key;
int size, height, sum;
node *child[2];
node(const T &key) :key(key), size(1), height(1),sum(key) {
child[0] = child[1] = 0;
}
} *root;
typedef node *pointer;
AVL() { root = NULL; }
pointer find(T key) {
return find(root, key);
}
node *find(node *t, const T key) {
if (t == NULL) return NULL;
if (key == (t->key)) return t;
else if (key < (t->key)) return find(t->child[0], key);
else return find(t->child[1], key);
}
void insert(const T key) {
root = insert(root, new node(key));
}
node *insert(node *t, node *x) {
if (t == NULL) return x;
if ((x->key) <= (t->key)) t->child[0] = insert(t->child[0], x);
else t->child[1] = insert(t->child[1], x);
t->size += 1;
return balance(t);
}
void erase(const T key) {
T t = key;
if (find(t) == NULL) return;
root = erase(root, key);
}
node *erase(node *t, const int x) {
if (t == NULL) return NULL;
if (x == (t->key)) {
return move_down(t->child[0], t->child[1]);
}
else {
if (x < (t->key)) t->child[0] = erase(t->child[0], x);
else t->child[1] = erase(t->child[1], x);
t->size -= 1;
return balance(t);
}
}
node *move_down(node *t, node *rhs) {
if (t == NULL) return rhs;
t->child[1] = move_down(t->child[1], rhs);
return balance(t);
}
int sz(node *t) {
if (t != NULL) return t->size;
return 0;
}
int ht(node *t) {
if (t != NULL) return t->height;
return 0;
}
int sm(node *t) {
if (t != NULL) return t->sum;
return 0;
}
node *rotate(node *t, int l, int r) {
node *s = t->child[r];
t->child[r] = s->child[l];
s->child[l] = balance(t);
if (t != NULL) t->size = sz(t->child[0]) + sz(t->child[1]) + 1;
if (s != NULL) s->size = sz(s->child[0]) + sz(s->child[1]) + 1;
if (t != NULL) t->sum = sm(t->child[0]) + sm(t->child[1]) + t->key;
if (s != NULL) s->sum = sm(s->child[0]) + sm(s->child[1]) + s->key;
return balance(s);
}
node *balance(node *t) {
for (int i = 0; i < 2; i++) {
if (ht(t->child[!i]) - ht(t->child[i]) < -1) {
if (ht(t->child[i]->child[!i]) - ht(t->child[i]->child[i]) > 0)
t->child[i] = rotate(t->child[i], i, !i);
return rotate(t, !i, i);
}
}
if (t != NULL) t->height = max(ht(t->child[0]), ht(t->child[1])) + 1;
if (t != NULL) t->size = sz(t->child[0]) + sz(t->child[1]) + 1;
if (t != NULL) t->sum = sm(t->child[0]) + sm(t->child[1]) + t->key;
return t;
}
pair<pointer, int> rank(int k) {
return rank(root, k);
}
pair<pointer, int> rank(node *t, int k) {
if (t == NULL) return make_pair((pointer)NULL, (int)0);
int m = sz(t->child[0]);
if (k < m) {
pair<pointer, int> res = rank(t->child[0], k);
return res;
}
if (k == m) return make_pair(t, t->key + sm(t->child[0]));
if (k > m) {
pair<pointer, int> res = rank(t->child[1], k - m - 1);
res.second += t->key + sm(t->child[0]);
return res;
}
}
int index(T key) {
if (find(key) == NULL) return -1;
return index(root, key);
}
int index(node *t, T key) {
if (key == (t->key)) return sz(t->child[0]);
if (key < (t->key)) return index(t->child[0], key);
else return sz(t) - sz(t->child[1]) + index(t->child[1], key);
}
};
signed main() {
cin.tie(0);
ios::sync_with_stdio(false);
int N, K;
cin >> N >> K;
vector<int> A(N);
int res = (int)1 << 60;
for (int i = 0; i < N; i++) {
cin >> A[i];
}
AVL<int> avl;
int sum = 0;
for (int i = 0; i < K - 1; i++) {
avl.insert(A[i]);
sum += A[i];
}
int ans;
int l = ((K + 1) / 2);
for (int i = K - 1; i < N; i++) {
avl.insert(A[i]);
sum += A[i];
auto p = avl.rank((K - 1) / 2);
ans = p.first->key * l - p.second;
ans += (sum - p.second) - p.first->key * (K - l);
res = min(res, ans);
//cerr << i << " " << p.first->key << " " << p.second << endl;
avl.erase(A[i - K + 1]);
sum -= A[i - K + 1];
}
cout << res << endl;
}
ats5515