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답안 #124617

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
124617 2019-07-03T15:08:15 Z Just_Solve_The_Problem Examination (JOI19_examination) C++14
100 / 100
 771 ms 39672 KB 
#include <stdio.h>
#include <vector>
#include <algorithm>
#include <utility>
#include <tuple>
#include <iostream>
#include <memory.h>

using namespace std;

const int N = (int)1e6 + 7;

int n, m;
pair <int, int> ar[N];

struct fen {
	int tree[N];
	fen() {
		memset(tree, 0, sizeof tree);
	}
	void upd(int pos, int val) {
		while (pos < N) {
			tree[pos] += val;
			pos = pos | pos + 1;
		}
	}
	int get(int r) {
		int res = 0;
		while (r >= 0) {
			res += tree[r];
			r = (r & r + 1) - 1;
		}
		return res;
	}
};
fen tr;

struct query {
	int id, tp, pos, x, y, val, z;
	query() {}
	query(int _pos, int _tp, int _x, int _y, int _z, int _val, int _id) {
		pos = _pos;
		tp = _tp;
		x = _x;
		id = _id;
		val = _val;
		z = _z;
		y = _y;
	}
};
vector <query> vec;
int ans[N];
query tp[N];

void make(int l, int r) {
	if (l >= r) return ;
	int mid = (l + r) >> 1;
	for (int i = l; i <= r; i++) {
		if (vec[i].pos <= mid && vec[i].tp == 0) {
			tr.upd(vec[i].y, vec[i].val);
		} else if (vec[i].pos > mid && vec[i].tp == 1) {
			ans[vec[i].id] += vec[i].val * tr.get(vec[i].y);
		}
	}
	for (int i = l; i <= r; i++) {
		if (vec[i].pos <= mid && vec[i].tp == 0) {
			tr.upd(vec[i].y, -vec[i].val);
		}
	}
	int curl = l;
	int curr = mid + 1;
	for (int i = l; i <= r; i++) {
		if (vec[i].pos <= mid) {
			tp[curl++] = vec[i];
		} else {
			tp[curr++] = vec[i];
		}
	}
	for (int i = l; i <= r; i++) {
		vec[i] = tp[i];
	}
	make(l, mid);
	make(mid + 1, r);
}

main() {
	scanf("%d %d", &n, &m);
	vector <int> vecx, vecy, vecz;
	for (int i = 1, x, y; i <= n; i++) {
		scanf("%d %d", &x, &y);
		vecx.push_back(x);
		vecy.push_back(y);
		vecz.push_back(x + y);
		ar[i] = {x, y};
	}
	sort(vecx.begin(), vecx.end());
	vecx.resize(unique(vecx.begin(), vecx.end()) - vecx.begin());
	sort(vecy.begin(), vecy.end());
	vecy.resize(unique(vecy.begin(), vecy.end()) - vecy.begin());
	sort(vecz.begin(), vecz.end());
	vecz.resize(unique(vecz.begin(), vecz.end()) - vecz.begin());
	int cnt = 0;
	for (int i = 1, x, y, z; i <= n; i++) {
		x = lower_bound(vecx.begin(), vecx.end(), ar[i].first) - vecx.begin();
		y = lower_bound(vecy.begin(), vecy.end(), ar[i].second) - vecy.begin();
		z = lower_bound(vecz.begin(), vecz.end(), ar[i].first + ar[i].second) - vecz.begin();
		vec.push_back(query(cnt++, 0, x, y, z, 1, 0));
	}
	
	for (int i = 1, x, y, z; i <= m; i++) {
		scanf("%d %d %d", &x, &y, &z);
		x = lower_bound(vecx.begin(), vecx.end(), x) - vecx.begin();
		y = lower_bound(vecy.begin(), vecy.end(), y) - vecy.begin();
		z = lower_bound(vecz.begin(), vecz.end(), z) - vecz.begin();
		// cout << x << ' ' << y << ' ' << z << endl;
		vec.push_back(query(cnt++, 1, vec.size(), vec.size(), z, 1, i));
		vec.push_back(query(cnt++, 1, x - 1, vec.size(), z, -1, i));
		vec.push_back(query(cnt++, 1, vec.size(), y - 1, z, -1, i));
		vec.push_back(query(cnt++, 1, x - 1, y - 1, z, 1, i));
	}
	sort(vec.begin(), vec.end(), [&](const auto &A, const auto &B) {
		if (A.z == B.z) return A.id < B.id; 
		return A.z > B.z;
	});
	/*
	for (int i = 0; i < vec.size(); i++) {
		cout << vec[i].tp << ' ' << vec[i].x << ' ' << vec[i].y << ' ' << vec[i].z << endl;
	}
	*/
	cnt = 0;
	for (int i = 0; i < vec.size(); i++) {
		vec[i].pos = cnt++;
	}
	sort(vec.begin(), vec.end(), [&](const auto &A, const auto &B) {
		if (A.x == B.x) return A.pos < B.pos;
		return A.x < B.x;
	});
	make(0, vec.size() - 1);
	for (int i = 1; i <= m; i++) {
		printf("%d\n", ans[i]);
	}
}

Compilation message

examination.cpp: In member function 'void fen::upd(int, int)':
examination.cpp:24:20: warning: suggest parentheses around arithmetic in operand of '|' [-Wparentheses]
    pos = pos | pos + 1;
                ~~~~^~~
examination.cpp: In member function 'int fen::get(int)':
examination.cpp:31:15: warning: suggest parentheses around '+' in operand of '&' [-Wparentheses]
    r = (r & r + 1) - 1;
             ~~^~~
examination.cpp: At global scope:
examination.cpp:86:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
examination.cpp: In function 'int main()':
examination.cpp:131:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < vec.size(); i++) {
                  ~~^~~~~~~~~~~~
examination.cpp:87:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~
examination.cpp:90:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &x, &y);
   ~~~~~^~~~~~~~~~~~~~~~~
examination.cpp:111:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d %d", &x, &y, &z);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 4216 KB Output is correct
2 Correct 5 ms 4216 KB Output is correct
3 Correct 5 ms 4216 KB Output is correct
4 Correct 5 ms 4216 KB Output is correct
5 Correct 5 ms 4216 KB Output is correct
6 Correct 5 ms 4216 KB Output is correct
7 Correct 22 ms 5312 KB Output is correct
8 Correct 21 ms 5444 KB Output is correct
9 Correct 21 ms 5312 KB Output is correct
10 Correct 20 ms 5312 KB Output is correct
11 Correct 20 ms 5308 KB Output is correct
12 Correct 18 ms 5312 KB Output is correct
13 Correct 19 ms 5308 KB Output is correct
14 Correct 19 ms 5312 KB Output is correct
15 Correct 19 ms 5312 KB Output is correct
16 Correct 17 ms 5312 KB Output is correct
17 Correct 20 ms 5312 KB Output is correct
18 Correct 15 ms 5312 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 603 ms 34816 KB Output is correct
2 Correct 607 ms 37176 KB Output is correct
3 Correct 620 ms 37212 KB Output is correct
4 Correct 566 ms 36476 KB Output is correct
5 Correct 523 ms 36540 KB Output is correct
6 Correct 494 ms 35768 KB Output is correct
7 Correct 606 ms 37172 KB Output is correct
8 Correct 602 ms 37308 KB Output is correct
9 Correct 582 ms 37048 KB Output is correct
10 Correct 475 ms 36356 KB Output is correct
11 Correct 551 ms 36412 KB Output is correct
12 Correct 445 ms 35272 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 603 ms 34816 KB Output is correct
2 Correct 607 ms 37176 KB Output is correct
3 Correct 620 ms 37212 KB Output is correct
4 Correct 566 ms 36476 KB Output is correct
5 Correct 523 ms 36540 KB Output is correct
6 Correct 494 ms 35768 KB Output is correct
7 Correct 606 ms 37172 KB Output is correct
8 Correct 602 ms 37308 KB Output is correct
9 Correct 582 ms 37048 KB Output is correct
10 Correct 475 ms 36356 KB Output is correct
11 Correct 551 ms 36412 KB Output is correct
12 Correct 445 ms 35272 KB Output is correct
13 Correct 709 ms 37872 KB Output is correct
14 Correct 762 ms 37700 KB Output is correct
15 Correct 671 ms 37308 KB Output is correct
16 Correct 676 ms 36956 KB Output is correct
17 Correct 662 ms 36864 KB Output is correct
18 Correct 533 ms 35872 KB Output is correct
19 Correct 709 ms 37688 KB Output is correct
20 Correct 721 ms 37688 KB Output is correct
21 Correct 699 ms 37688 KB Output is correct
22 Correct 484 ms 36464 KB Output is correct
23 Correct 556 ms 36412 KB Output is correct
24 Correct 441 ms 35428 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 4216 KB Output is correct
2 Correct 5 ms 4216 KB Output is correct
3 Correct 5 ms 4216 KB Output is correct
4 Correct 5 ms 4216 KB Output is correct
5 Correct 5 ms 4216 KB Output is correct
6 Correct 5 ms 4216 KB Output is correct
7 Correct 22 ms 5312 KB Output is correct
8 Correct 21 ms 5444 KB Output is correct
9 Correct 21 ms 5312 KB Output is correct
10 Correct 20 ms 5312 KB Output is correct
11 Correct 20 ms 5308 KB Output is correct
12 Correct 18 ms 5312 KB Output is correct
13 Correct 19 ms 5308 KB Output is correct
14 Correct 19 ms 5312 KB Output is correct
15 Correct 19 ms 5312 KB Output is correct
16 Correct 17 ms 5312 KB Output is correct
17 Correct 20 ms 5312 KB Output is correct
18 Correct 15 ms 5312 KB Output is correct
19 Correct 603 ms 34816 KB Output is correct
20 Correct 607 ms 37176 KB Output is correct
21 Correct 620 ms 37212 KB Output is correct
22 Correct 566 ms 36476 KB Output is correct
23 Correct 523 ms 36540 KB Output is correct
24 Correct 494 ms 35768 KB Output is correct
25 Correct 606 ms 37172 KB Output is correct
26 Correct 602 ms 37308 KB Output is correct
27 Correct 582 ms 37048 KB Output is correct
28 Correct 475 ms 36356 KB Output is correct
29 Correct 551 ms 36412 KB Output is correct
30 Correct 445 ms 35272 KB Output is correct
31 Correct 709 ms 37872 KB Output is correct
32 Correct 762 ms 37700 KB Output is correct
33 Correct 671 ms 37308 KB Output is correct
34 Correct 676 ms 36956 KB Output is correct
35 Correct 662 ms 36864 KB Output is correct
36 Correct 533 ms 35872 KB Output is correct
37 Correct 709 ms 37688 KB Output is correct
38 Correct 721 ms 37688 KB Output is correct
39 Correct 699 ms 37688 KB Output is correct
40 Correct 484 ms 36464 KB Output is correct
41 Correct 556 ms 36412 KB Output is correct
42 Correct 441 ms 35428 KB Output is correct
43 Correct 744 ms 39632 KB Output is correct
44 Correct 771 ms 39608 KB Output is correct
45 Correct 752 ms 39612 KB Output is correct
46 Correct 670 ms 38024 KB Output is correct
47 Correct 652 ms 38080 KB Output is correct
48 Correct 507 ms 35644 KB Output is correct
49 Correct 715 ms 39460 KB Output is correct
50 Correct 729 ms 39672 KB Output is correct
51 Correct 702 ms 39516 KB Output is correct
52 Correct 625 ms 37916 KB Output is correct
53 Correct 569 ms 37180 KB Output is correct