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답안 #471283

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
471283 2021-09-08T07:13:39 Z prvocislo 별자리 3 (JOI20_constellation3) C++17
100 / 100
 380 ms 29112 KB 
#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
typedef long long ll;
using namespace std;

const int maxn = 1 << 18;
ll tree[maxn * 2];
void range_add(int l, int r, ll d)
{
	for (l += maxn, r += maxn+1; l < r; l >>= 1, r >>= 1)
	{
		if (l & 1) tree[l++] += d;
		if (r & 1) tree[--r] += d;
	}
}
ll query(int i)
{
	ll ans = 0;
	for (i += maxn; i > 0; i >>= 1) ans += tree[i];
	return ans;
}
struct star { int x, y, c; };
bool cmp(const star& a, const star& b) { return (a.y < b.y || (a.y == b.y && a.x < b.x)); }
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n;
	cin >> n;
	vector<int> a(n + 2, n + 1);
	for (int i = 1; i <= n; i++) cin >> a[i];
	int m;
	cin >> m;
	vector<int> l(m, -1), r(m, -1);
	ll ans = 0;
	vector<star> s(m);
	for (int i = 0; i < m; i++) cin >> s[i].x >> s[i].y >> s[i].c, ans += s[i].c;
	sort(s.begin(), s.end(), cmp);
	vector<vector<int> > v(n + 2);
	for (int i = 0; i < m; i++) v[s[i].x].push_back(i);
	vector<int> stk = {0};
	set<pair<int, int> > tall = { { a[0], 0 } };
	for (int i = 1; i <= n; i++)
	{
		while (!stk.empty() && a[stk.back()] <= a[i]) tall.erase({ a[stk.back()], stk.back() }), stk.pop_back();
		for (int j : v[i])
			l[j] = tall.upper_bound({ s[j].y, -1 })->second;
		tall.insert({ a[i], i });
		stk.push_back(i);
	}
	stk = { n + 1 }, tall = { { a[n + 1], n + 1 } };
	for (int i = n; i >= 1; i--)
	{
		while (!stk.empty() && a[stk.back()] <= a[i]) tall.erase({ a[stk.back()], stk.back() }), stk.pop_back();
		for (int j : v[i]) 
			r[j] = tall.upper_bound({ s[j].y, -1 })->second;
		tall.insert({ a[i], i });
		stk.push_back(i);
	}
	for (int i = 0; i < m; i++)
	{
		ll val = (ll)s[i].c - query(s[i].x);
		if (val > 0)
		{
			range_add(l[i] + 1, r[i] - 1, val);
			ans -= val;
		}
		/*for (int j = 0; j < n; j++) cout << query(j) << " ";
		cout << "\n";*/
	}
	cout << ans << "\n";
	return 0;
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 2 ms 460 KB Output is correct
24 Correct 2 ms 460 KB Output is correct
25 Correct 2 ms 460 KB Output is correct
26 Correct 3 ms 460 KB Output is correct
27 Correct 2 ms 460 KB Output is correct
28 Correct 2 ms 460 KB Output is correct
29 Correct 2 ms 460 KB Output is correct
30 Correct 3 ms 460 KB Output is correct
31 Correct 3 ms 460 KB Output is correct
32 Correct 3 ms 460 KB Output is correct
33 Correct 3 ms 460 KB Output is correct
34 Correct 3 ms 460 KB Output is correct
35 Correct 3 ms 460 KB Output is correct
36 Correct 2 ms 460 KB Output is correct
37 Correct 2 ms 460 KB Output is correct
38 Correct 2 ms 588 KB Output is correct
39 Correct 2 ms 460 KB Output is correct
40 Correct 3 ms 460 KB Output is correct
41 Correct 2 ms 460 KB Output is correct
42 Correct 2 ms 460 KB Output is correct
43 Correct 3 ms 460 KB Output is correct
44 Correct 2 ms 460 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 2 ms 460 KB Output is correct
24 Correct 2 ms 460 KB Output is correct
25 Correct 2 ms 460 KB Output is correct
26 Correct 3 ms 460 KB Output is correct
27 Correct 2 ms 460 KB Output is correct
28 Correct 2 ms 460 KB Output is correct
29 Correct 2 ms 460 KB Output is correct
30 Correct 3 ms 460 KB Output is correct
31 Correct 3 ms 460 KB Output is correct
32 Correct 3 ms 460 KB Output is correct
33 Correct 3 ms 460 KB Output is correct
34 Correct 3 ms 460 KB Output is correct
35 Correct 3 ms 460 KB Output is correct
36 Correct 2 ms 460 KB Output is correct
37 Correct 2 ms 460 KB Output is correct
38 Correct 2 ms 588 KB Output is correct
39 Correct 2 ms 460 KB Output is correct
40 Correct 3 ms 460 KB Output is correct
41 Correct 2 ms 460 KB Output is correct
42 Correct 2 ms 460 KB Output is correct
43 Correct 3 ms 460 KB Output is correct
44 Correct 2 ms 460 KB Output is correct
45 Correct 229 ms 16592 KB Output is correct
46 Correct 233 ms 21968 KB Output is correct
47 Correct 242 ms 22188 KB Output is correct
48 Correct 234 ms 21860 KB Output is correct
49 Correct 236 ms 21736 KB Output is correct
50 Correct 236 ms 21552 KB Output is correct
51 Correct 231 ms 21792 KB Output is correct
52 Correct 234 ms 22212 KB Output is correct
53 Correct 259 ms 22080 KB Output is correct
54 Correct 379 ms 25432 KB Output is correct
55 Correct 369 ms 24384 KB Output is correct
56 Correct 338 ms 23616 KB Output is correct
57 Correct 337 ms 23264 KB Output is correct
58 Correct 248 ms 21452 KB Output is correct
59 Correct 244 ms 21608 KB Output is correct
60 Correct 200 ms 29112 KB Output is correct
61 Correct 213 ms 21656 KB Output is correct
62 Correct 367 ms 25624 KB Output is correct
63 Correct 199 ms 21708 KB Output is correct
64 Correct 209 ms 21172 KB Output is correct
65 Correct 380 ms 25692 KB Output is correct
66 Correct 203 ms 21752 KB Output is correct