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답안 #105713

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
105713 2019-04-14T04:20:55 Z Pro_ktmr Matryoshka (JOI16_matryoshka) C++14
100 / 100
 1232 ms 31664 KB 
#include"bits/stdc++.h"
using namespace std;
#define LL long long
#define MP(a,b) make_pair(a,b)

//RSQ セグメント木
struct SegmentTree{
private:
	int n;
	vector<long long> nodes;
public:
	void init(int N){ //初期化する O(N)
		nodes.clear();
		n = 1;
		while(n < N) n *= 2;
		n = 2 * n -1;
		for(int i=0; i<n; i++) nodes.push_back(0);
	}
	void add(int i, long long x){ //値を変更する O(log N)
		i += n / 2;
		nodes[i] += x;
		while(i > 0){
			i = (i-1)/2; //親の取得は(i-1)/2
			nodes[i] = nodes[i*2+1] + nodes[i*2+2]; //子の取得はi*2+1,i*2+2
		}
	}
	long long sum(int a, int b, int k=0, int l=0, int r=-1){ //[a,b)の最小値を求める O(log N)
		if(r == -1) r = n/2+1;
		if(r <= a || b <= l) return 0; //交差する場合
		if(a <= l && r <= b) return nodes[k]; //完全に含む場合
		long long valueL = sum(a, b, k*2+1, l, (l+r)/2);
		long long valueR = sum(a, b, k*2+2, (l+r)/2, r);
		return valueL + valueR;
	}
};

int N,Q;
vector<pair<int,int> > v,q;
vector<int> zaatuB;
vector<pair<pair<int,int>, int> > all;
multiset<pair<int,int> > s;
SegmentTree st;
int ans[200000];

int main(){
	cin >> N >> Q;
	for(int i=0; i<N; i++){
		int A,B;
		cin >> A >> B;
		v.push_back(MP(A,B));
		zaatuB.push_back(B);
	}
	for(int i=0; i<Q; i++){
		int a,b;
		cin >> a >> b;
		q.push_back(MP(a,b));
		zaatuB.push_back(b);
	}
	sort(zaatuB.begin(), zaatuB.end());
	for(int i=0; i<N; i++){
		all.push_back(MP(MP(v[i].first, lower_bound(zaatuB.begin(), zaatuB.end(), v[i].second)-zaatuB.begin()), Q));
		swap(all.back().first.second, all.back().second);
	}
	for(int i=0; i<Q; i++){
		all.push_back(MP(MP(q[i].first, lower_bound(zaatuB.begin(), zaatuB.end(), q[i].second)-zaatuB.begin()), i));
		swap(all.back().first.second, all.back().second);
	}
	sort(all.begin(), all.end());
	reverse(all.begin(), all.end());
	for(int i=0; i<all.size(); i++){
		swap(all[i].first.second, all[i].second);
	}

	st.init(zaatuB.size());
	multiset<pair<int,int> > s2;
	for(int i=0; i<all.size(); i++){
		if(i != 0 && all[i-1].first.first != all[i].first.first){
			for(auto itr=s2.begin(); itr!=s2.end(); itr++) s.insert(*itr);
			s2.clear();
		}
		//cout << all[i].first.first << " " << all[i].first.second << " " << all[i].second << endl;
		if(all[i].second == Q){
			auto itr = s.lower_bound(MP(all[i].first.second+1,-1));
			while(s.size() != 0 && itr != s.end()){
				if(itr->first > all[i].first.second/* && itr->second > all[i].first.first*/){
					st.add(itr->first, -1);
					s.erase(itr);
					break;
				}
				itr++;
			}
			s2.insert(MP(all[i].first.second, all[i].first.first));
			st.add(all[i].first.second, 1);
		}
		else{
			ans[all[i].second] = st.sum(0, all[i].first.second+1);
		}
	}
	for(int i=0; i<Q; i++) cout << ans[i] << endl;

	return 0;
}

Compilation message

matryoshka.cpp: In function 'int main()':
matryoshka.cpp:70:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<all.size(); i++){
               ~^~~~~~~~~~~
matryoshka.cpp:76:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<all.size(); i++){
               ~^~~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 3 ms 256 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 3 ms 256 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 3 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 384 KB Output is correct

Subtask #3
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 3 ms 256 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 3 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 3 ms 384 KB Output is correct
22 Correct 7 ms 512 KB Output is correct
23 Correct 10 ms 640 KB Output is correct
24 Correct 12 ms 640 KB Output is correct
25 Correct 13 ms 640 KB Output is correct
26 Correct 12 ms 640 KB Output is correct
27 Correct 12 ms 640 KB Output is correct
28 Correct 11 ms 640 KB Output is correct
29 Correct 12 ms 640 KB Output is correct
30 Correct 11 ms 640 KB Output is correct
31 Correct 12 ms 716 KB Output is correct
32 Correct 12 ms 640 KB Output is correct
33 Correct 11 ms 640 KB Output is correct
34 Correct 15 ms 640 KB Output is correct
35 Correct 11 ms 640 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 3 ms 256 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 3 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 3 ms 384 KB Output is correct
22 Correct 7 ms 512 KB Output is correct
23 Correct 10 ms 640 KB Output is correct
24 Correct 12 ms 640 KB Output is correct
25 Correct 13 ms 640 KB Output is correct
26 Correct 12 ms 640 KB Output is correct
27 Correct 12 ms 640 KB Output is correct
28 Correct 11 ms 640 KB Output is correct
29 Correct 12 ms 640 KB Output is correct
30 Correct 11 ms 640 KB Output is correct
31 Correct 12 ms 716 KB Output is correct
32 Correct 12 ms 640 KB Output is correct
33 Correct 11 ms 640 KB Output is correct
34 Correct 15 ms 640 KB Output is correct
35 Correct 11 ms 640 KB Output is correct
36 Correct 1110 ms 28888 KB Output is correct
37 Correct 793 ms 28108 KB Output is correct
38 Correct 355 ms 12792 KB Output is correct
39 Correct 825 ms 26684 KB Output is correct
40 Correct 914 ms 27144 KB Output is correct
41 Correct 1022 ms 28204 KB Output is correct
42 Correct 843 ms 25804 KB Output is correct
43 Correct 710 ms 31344 KB Output is correct
44 Correct 1232 ms 31476 KB Output is correct
45 Correct 1205 ms 31540 KB Output is correct
46 Correct 1154 ms 31388 KB Output is correct
47 Correct 1122 ms 31352 KB Output is correct
48 Correct 1185 ms 31664 KB Output is correct
49 Correct 992 ms 31112 KB Output is correct
50 Correct 985 ms 31516 KB Output is correct