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Submission #383972

# Submission time Handle Problem Language Result Execution time Memory
383972 2021-03-31T06:03:28 Z nikatamliani Examination (JOI19_examination) C++14
100 / 100
 703 ms 77604 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;
const int N = 2e5+10;
template <typename T>
struct implicit_segment_tree {
	T neutral;
	int size, max_size;
	function<T(T, T)> join;
	vector<T> values;
	vector<int> left, right;
	implicit_segment_tree(int _max_size, T _neutral, function<T(T, T)> f, int reserve_size = 1) {
		join = f;
		neutral = _neutral;
		size = 0;
		max_size = _max_size;
		values.reserve(reserve_size);
		left.reserve(reserve_size);
		right.reserve(reserve_size);
		insert_node(neutral);
	}
	
	T get_val(int pos) {
		if(pos < 0 || pos >= (int)values.size()) return neutral;
		return values[pos];
	}
	
	void insert_node(T val) {
		values.push_back(val);
		left.push_back(-1);
		right.push_back(-1);
		++size;
	}
	
	void point_update(int id, T val) {
		point_update(0, max_size, id, val, 0); 
	}
	
	void point_update(int l, int r, int x, T val, int p) {
		int middle = l + r >> 1;
		if(l == r) {
			values[p] = val;
			return;
		}
		if(x <= middle) {
			if(left[p] == -1) {
				left[p] = size;
				insert_node(neutral);
			}
			point_update(l, middle, x, val, left[p]);
		} else {
			if(right[p] == -1) {
				right[p] = size;
				insert_node(neutral);
			}
			point_update(middle+1, r, x, val, right[p]);
		}
		values[p] = join(get_val(left[p]), get_val(right[p]));
	}
	
	T get(int id) {
		return query(id, id);
	}
	
	T query(int L, int R) {
		if(L > R) return neutral;
		return query(0, max_size, L, R, 0); 
	}
	
	T query(int l, int r, int L, int R, int p) {
		if(L > r || l > R || p == -1) return neutral;
		if(L <= l && R >= r) return get_val(p);
		int middle = l + r >> 1;
		T lft = query(l, middle, L, R, left[p]);
		T rgh = query(middle+1, r, L, R, right[p]);
		return join(lft, rgh);
	}
	
	void print_tree(int n) {
		for(int i = 1; i <= n; ++i) {
			cout << get(i) << " \n"[i == n];
		}
	}
};
struct point {
	int x, y, sum, id;
	bool operator < (const point &other) {
		return sum < other.sum;
	}
};
main() {
	ios::sync_with_stdio(0); cin.tie(0);
	int n, m;
	cin >> n >> m; 
	vector<point> a(n), b(m);
	for(int i = 0; i < n; ++i) {
		cin >> a[i].x >> a[i].y;
		a[i].sum = a[i].x + a[i].y;
	}
	for(int i = 0; i < m; ++i) {
		cin >> b[i].x >> b[i].y >> b[i].sum;
		b[i].sum = max(b[i].sum, b[i].x + b[i].y);
		b[i].id = i;
	}
	sort(a.begin(), a.end());
	sort(b.begin(), b.end());
	vector<int> ans(m);
	auto sum = [](int x, int y) -> int {
		return x + y;
	};
	implicit_segment_tree<int> tx(INT_MAX, 0, sum, 5e6);
	implicit_segment_tree<int> ty(INT_MAX, 0, sum, 5e6); 
	for(int i = m - 1, j = n - 1; i >= 0; --i) {
		while(j >= 0 && a[j].sum >= b[i].sum) {
			int upd_x = tx.get(a[j].x) + 1;
			int upd_y = ty.get(a[j].y) + 1;
			tx.point_update(a[j].x, upd_x);
			ty.point_update(a[j].y, upd_y);
			--j;
		}
		ans[b[i].id] = n - j - 1 - tx.query(0, b[i].x - 1) - ty.query(0, b[i].y - 1);
	}
	for(int x : ans) {
		cout << x << ' ';  
	}
}

Compilation message

examination.cpp:91:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   91 | main() {
      |      ^
examination.cpp: In instantiation of 'void implicit_segment_tree<T>::point_update(long long int, long long int, long long int, T, long long int) [with T = long long int]':
examination.cpp:36:3:   required from 'void implicit_segment_tree<T>::point_update(long long int, T) [with T = long long int]'
examination.cpp:117:33:   required from here
examination.cpp:40:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   40 |   int middle = l + r >> 1;
      |                ~~^~~
examination.cpp: In instantiation of 'T implicit_segment_tree<T>::query(long long int, long long int, long long int, long long int, long long int) [with T = long long int]':
examination.cpp:67:36:   required from 'T implicit_segment_tree<T>::query(long long int, long long int) [with T = long long int]'
examination.cpp:121:52:   required from here
examination.cpp:73:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   73 |   int middle = l + r >> 1;
      |                ~~^~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 13 ms 3436 KB Output is correct
8 Correct 13 ms 3436 KB Output is correct
9 Correct 13 ms 3436 KB Output is correct
10 Correct 11 ms 2028 KB Output is correct
11 Correct 11 ms 2028 KB Output is correct
12 Correct 9 ms 768 KB Output is correct
13 Correct 14 ms 3584 KB Output is correct
14 Correct 13 ms 3436 KB Output is correct
15 Correct 13 ms 3436 KB Output is correct
16 Correct 10 ms 2048 KB Output is correct
17 Correct 10 ms 2028 KB Output is correct
18 Correct 8 ms 748 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 506 ms 15724 KB Output is correct
2 Correct 491 ms 16108 KB Output is correct
3 Correct 498 ms 16108 KB Output is correct
4 Correct 339 ms 12396 KB Output is correct
5 Correct 336 ms 12532 KB Output is correct
6 Correct 277 ms 8684 KB Output is correct
7 Correct 504 ms 15724 KB Output is correct
8 Correct 461 ms 15596 KB Output is correct
9 Correct 460 ms 15724 KB Output is correct
10 Correct 308 ms 11756 KB Output is correct
11 Correct 312 ms 11856 KB Output is correct
12 Correct 197 ms 7916 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 506 ms 15724 KB Output is correct
2 Correct 491 ms 16108 KB Output is correct
3 Correct 498 ms 16108 KB Output is correct
4 Correct 339 ms 12396 KB Output is correct
5 Correct 336 ms 12532 KB Output is correct
6 Correct 277 ms 8684 KB Output is correct
7 Correct 504 ms 15724 KB Output is correct
8 Correct 461 ms 15596 KB Output is correct
9 Correct 460 ms 15724 KB Output is correct
10 Correct 308 ms 11756 KB Output is correct
11 Correct 312 ms 11856 KB Output is correct
12 Correct 197 ms 7916 KB Output is correct
13 Correct 477 ms 15724 KB Output is correct
14 Correct 531 ms 15800 KB Output is correct
15 Correct 510 ms 15596 KB Output is correct
16 Correct 399 ms 11884 KB Output is correct
17 Correct 322 ms 12012 KB Output is correct
18 Correct 291 ms 8300 KB Output is correct
19 Correct 509 ms 15624 KB Output is correct
20 Correct 520 ms 15844 KB Output is correct
21 Correct 508 ms 15704 KB Output is correct
22 Correct 345 ms 11756 KB Output is correct
23 Correct 314 ms 11820 KB Output is correct
24 Correct 204 ms 7916 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 13 ms 3436 KB Output is correct
8 Correct 13 ms 3436 KB Output is correct
9 Correct 13 ms 3436 KB Output is correct
10 Correct 11 ms 2028 KB Output is correct
11 Correct 11 ms 2028 KB Output is correct
12 Correct 9 ms 768 KB Output is correct
13 Correct 14 ms 3584 KB Output is correct
14 Correct 13 ms 3436 KB Output is correct
15 Correct 13 ms 3436 KB Output is correct
16 Correct 10 ms 2048 KB Output is correct
17 Correct 10 ms 2028 KB Output is correct
18 Correct 8 ms 748 KB Output is correct
19 Correct 506 ms 15724 KB Output is correct
20 Correct 491 ms 16108 KB Output is correct
21 Correct 498 ms 16108 KB Output is correct
22 Correct 339 ms 12396 KB Output is correct
23 Correct 336 ms 12532 KB Output is correct
24 Correct 277 ms 8684 KB Output is correct
25 Correct 504 ms 15724 KB Output is correct
26 Correct 461 ms 15596 KB Output is correct
27 Correct 460 ms 15724 KB Output is correct
28 Correct 308 ms 11756 KB Output is correct
29 Correct 312 ms 11856 KB Output is correct
30 Correct 197 ms 7916 KB Output is correct
31 Correct 477 ms 15724 KB Output is correct
32 Correct 531 ms 15800 KB Output is correct
33 Correct 510 ms 15596 KB Output is correct
34 Correct 399 ms 11884 KB Output is correct
35 Correct 322 ms 12012 KB Output is correct
36 Correct 291 ms 8300 KB Output is correct
37 Correct 509 ms 15624 KB Output is correct
38 Correct 520 ms 15844 KB Output is correct
39 Correct 508 ms 15704 KB Output is correct
40 Correct 345 ms 11756 KB Output is correct
41 Correct 314 ms 11820 KB Output is correct
42 Correct 204 ms 7916 KB Output is correct
43 Correct 639 ms 76012 KB Output is correct
44 Correct 654 ms 75928 KB Output is correct
45 Correct 703 ms 77156 KB Output is correct
46 Correct 340 ms 43508 KB Output is correct
47 Correct 339 ms 43372 KB Output is correct
48 Correct 251 ms 8852 KB Output is correct
49 Correct 670 ms 77604 KB Output is correct
50 Correct 650 ms 77548 KB Output is correct
51 Correct 648 ms 77548 KB Output is correct
52 Correct 330 ms 43364 KB Output is correct
53 Correct 333 ms 42920 KB Output is correct