結果

問題 No.738 平らな農地
ユーザー しらっ亭しらっ亭
提出日時 2017-06-01 20:29:08
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 141 ms / 2,000 ms
コード長 3,802 bytes
コンパイル時間 2,337 ms
コンパイル使用メモリ 180,200 KB
実行使用メモリ 9,984 KB
最終ジャッジ日時 2024-04-21 14:55:50
合計ジャッジ時間 9,567 ms
ジャッジサーバーID
(参考情報)
judge2 / judge3
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 1 ms
5,248 KB
testcase_01 AC 2 ms
5,376 KB
testcase_02 AC 1 ms
5,376 KB
testcase_03 AC 2 ms
5,376 KB
testcase_04 AC 2 ms
5,376 KB
testcase_05 AC 3 ms
5,376 KB
testcase_06 AC 5 ms
5,376 KB
testcase_07 AC 4 ms
5,376 KB
testcase_08 AC 3 ms
5,376 KB
testcase_09 AC 2 ms
5,376 KB
testcase_10 AC 2 ms
5,376 KB
testcase_11 AC 3 ms
5,376 KB
testcase_12 AC 2 ms
5,376 KB
testcase_13 AC 3 ms
5,376 KB
testcase_14 AC 2 ms
5,376 KB
testcase_15 AC 125 ms
9,216 KB
testcase_16 AC 128 ms
9,456 KB
testcase_17 AC 130 ms
9,472 KB
testcase_18 AC 128 ms
9,308 KB
testcase_19 AC 99 ms
9,728 KB
testcase_20 AC 128 ms
9,344 KB
testcase_21 AC 132 ms
9,812 KB
testcase_22 AC 132 ms
9,492 KB
testcase_23 AC 123 ms
9,600 KB
testcase_24 AC 119 ms
9,472 KB
testcase_25 AC 2 ms
5,376 KB
testcase_26 AC 2 ms
5,376 KB
testcase_27 AC 2 ms
5,376 KB
testcase_28 AC 2 ms
5,376 KB
testcase_29 AC 3 ms
5,376 KB
testcase_30 AC 2 ms
5,376 KB
testcase_31 AC 2 ms
5,376 KB
testcase_32 AC 2 ms
5,376 KB
testcase_33 AC 2 ms
5,376 KB
testcase_34 AC 3 ms
5,376 KB
testcase_35 AC 2 ms
5,376 KB
testcase_36 AC 2 ms
5,376 KB
testcase_37 AC 2 ms
5,376 KB
testcase_38 AC 2 ms
5,376 KB
testcase_39 AC 3 ms
5,376 KB
testcase_40 AC 3 ms
5,376 KB
testcase_41 AC 2 ms
5,376 KB
testcase_42 AC 3 ms
5,376 KB
testcase_43 AC 3 ms
5,376 KB
testcase_44 AC 2 ms
5,376 KB
testcase_45 AC 133 ms
9,856 KB
testcase_46 AC 125 ms
9,360 KB
testcase_47 AC 136 ms
9,600 KB
testcase_48 AC 115 ms
9,228 KB
testcase_49 AC 120 ms
9,344 KB
testcase_50 AC 122 ms
9,688 KB
testcase_51 AC 141 ms
9,728 KB
testcase_52 AC 125 ms
9,344 KB
testcase_53 AC 134 ms
9,472 KB
testcase_54 AC 140 ms
9,728 KB
testcase_55 AC 136 ms
9,728 KB
testcase_56 AC 137 ms
9,600 KB
testcase_57 AC 127 ms
9,312 KB
testcase_58 AC 131 ms
9,728 KB
testcase_59 AC 133 ms
9,856 KB
testcase_60 AC 132 ms
9,728 KB
testcase_61 AC 126 ms
9,728 KB
testcase_62 AC 122 ms
9,228 KB
testcase_63 AC 136 ms
9,728 KB
testcase_64 AC 131 ms
9,664 KB
testcase_65 AC 10 ms
5,376 KB
testcase_66 AC 11 ms
5,376 KB
testcase_67 AC 49 ms
9,364 KB
testcase_68 AC 49 ms
9,472 KB
testcase_69 AC 63 ms
9,600 KB
testcase_70 AC 58 ms
9,984 KB
testcase_71 AC 45 ms
9,764 KB
testcase_72 AC 60 ms
9,216 KB
testcase_73 AC 62 ms
9,600 KB
testcase_74 AC 53 ms
9,600 KB
testcase_75 AC 58 ms
9,088 KB
testcase_76 AC 59 ms
9,556 KB
testcase_77 AC 56 ms
9,324 KB
testcase_78 AC 61 ms
9,856 KB
testcase_79 AC 81 ms
9,884 KB
testcase_80 AC 73 ms
9,492 KB
testcase_81 AC 71 ms
9,408 KB
testcase_82 AC 72 ms
9,600 KB
testcase_83 AC 76 ms
9,856 KB
testcase_84 AC 81 ms
9,600 KB
testcase_85 AC 24 ms
9,728 KB
testcase_86 AC 24 ms
9,216 KB
testcase_87 AC 81 ms
9,600 KB
testcase_88 AC 78 ms
9,344 KB
testcase_89 AC 2 ms
5,376 KB
testcase_90 AC 2 ms
5,376 KB
testcase_91 AC 1 ms
5,376 KB
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ソースコード

diff #

// verify のために http://yukicoder.me/submissions/131359 から treap を借りて、sum 機能を追加しました
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

bool lsss(int x,int y);

struct Treap{
private:
	static const ll rd_msk = (1ll<<32)-1;
	static ll rd(){
		static ll rd_x = 123456789;
		static ll rd_y = 362436069;
		static ll rd_z = 521288629;
		static ll rd_w = 88675123;
		ll t = (rd_x^(rd_x<<11))&rd_msk;
		rd_x = rd_y;
		rd_y = rd_z;
		rd_z = rd_w;
		return rd_w = (rd_w^(rd_w>>19)) ^ (t^(t>>8));
	}
	struct node{
		ll val,pri,cnt, sum;
		node *lch, *rch;
		node(ll val):val(val),cnt(1),sum(val){
			pri = rd();
			lch = rch = NULL;
		}
	};
public:
	node *root;
	Treap():root(NULL){}
private:
	ll count(node *t){return t==NULL?0:t->cnt;}
	ll sum(node *t){return t==NULL?0:t->sum;}
	node* update(node *t){
		t->cnt=count(t->lch)+count(t->rch)+1;
		t->sum=sum(t->lch)+sum(t->rch)+t->val;
		return t;
	}
	node* merge(node *l, node *r){
		if(!l || !r)return !l?r:l;
		if(l->pri > r->pri){
			l->rch = merge(l->rch,r);
			return update(l);
		}else{
			r->lch = merge(l,r->lch);
			return update(r);
		}
	}
	pair<node*,node*> split(node *t, ll k){
		if(!t) return make_pair<node*,node*>(NULL,NULL);
		if(k <= count(t->lch)){
			pair<node*,node*> s = split(t->lch,k);
			t->lch = s.second;
			return make_pair(s.first,update(t));
		}else{
			pair<node*,node*> s = split(t->rch,k-count(t->lch)-1);
			t->rch = s.first;
			return make_pair(update(t),s.second);
		}
	}
	ll __find(node *p,ll v){
		if(!p)return 0;
		if(p->val==v)return count(p->lch);
		return (lsss(v,p->val))?__find(p->lch,v):(count(p->lch)+1+__find(p->rch,v));
	}
	ll __lsss(node *p,ll v){
		if(!p)return 0;
		return (!lsss(p->val,v))?__lsss(p->lch,v):(count(p->lch)+1+__lsss(p->rch,v));
	}
	ll __lsss_eq(node *p,ll v){
		if(!p)return 0;
		return (lsss(v,p->val))?__lsss_eq(p->lch,v):(count(p->lch)+1+__lsss_eq(p->rch,v));
	}
	ll __get_at(node *p,ll k,ll acc){
		if(!p)return -1;
		ll lc=count(p->lch);
		if(acc+lc==k)return p->val;
		if(acc+lc>k)return __get_at(p->lch,k,acc);
		if(acc+lc<k)return __get_at(p->rch,k,acc+lc+1);
		assert(false);
	}
public:
	void merge(Treap that){
		root = merge(root, that.root);
	}
	Treap split(ll k){
		Treap that;
		pair<node*,node*> p = split(root,k);
		root = p.first;
		that.root = p.second;
		return that;
	}
	void insert_at(ll v,ll k){
		pair<node*,node*> p = split(root,k);
		node* nn = new node(v);
		root = merge(p.first, nn);
		root = merge(root, p.second);
	}
	void erase_at(ll k){
		pair<node*,node*> p,q;
		q = split(root,k+1);
		p = split(q.first,k);
		root = merge(p.first, q.second);
	}
	void insert_by(ll v){
		insert_at(v,__lsss(root,v));
	}
	void erase_by(ll v){
		erase_at(__find(root,v));
	}
	ll count_lsss(ll v){
		return __lsss(root,v);
	}
	ll count_lsss_equal(ll v){
		return __lsss_eq(root,v);
	}
	ll get_at(ll k){
		return __get_at(root,k,0);
	}
	ll size(){
		return count(root);
	}
};

bool lsss(int x,int y){
	return x < y;
}

int64_t solve(const int n, const int k, const vector<int> &A) {
	if (k == 1) return 0;

	int l = (k + 1) / 2;
	int m = k - l;
	Treap treap;

	ll ans = 1e18;

	for (int i = 0; i < n; i++) {
		treap.insert_by(A[i]);

		if (i >= k) treap.erase_by(A[i-k]);

		if (i >= k - 1) {
			ll median = treap.get_at(l-1);
			Treap rig = treap.split(l);
			ll sum_of_lower = treap.root->sum;
			ll sum_of_higher = rig.root->sum;
			treap.merge(rig);
			ll inc_cost = median * l - sum_of_lower;
			ll dec_cost = sum_of_higher - median * m;
			ll cand = inc_cost + dec_cost;

			ans = min(ans, cand);
		}
	}

	return ans;
}

int main() {
	cin.tie(nullptr);
	ios::sync_with_stdio(false);

	int n, k; cin >> n >> k;
	vector<int> A(n);
	for (int i = 0; i < n; i++) cin >> A[i];

	cout << solve(n, k, A) << endl;

	return 0;
}
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