답안 #830144

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
830144	2023-08-18T20:00:40 Z	NK_	Mountains (NOI20_mountains)	C++17	100 / 100	146 ms	9744 KB

Mountains

// Success consists of going from failure to failure without loss of enthusiasm
#include <bits/stdc++.h>

using namespace std;
 
#define nl '\n'
#define pb push_back
#define mp make_pair
#define f first
#define s second
#define sz(x) int(x.size())
 
template<class T> using V = vector<T>;
using vi = V<int>;
using ll = long long;
using pi = pair<int, int>;
using vpi = V<pi>;
using vl = V<ll>;
using db = long double;

const int INF = 1e9 + 10;


struct BIT {
	int N; vl A; void init(int n) { N = n; A = vl(N, 0); }
	void upd(int p, int x) { for(++p;p<=N;p+=p&-p) A[p-1] += x; }
	ll sum(int l, int r) { return sum(r + 1) - sum(l); }
	ll sum(int r) { ll s = 0; for(;r;r-=r&-r) s += A[r-1]; return s; }
};

int main() {
	cin.tie(0)->sync_with_stdio(0);
	
	int N; cin >> N;
	vl A(N); for(auto& x : A) cin >> x;

	vl X = A; sort(begin(X), end(X));
	X.erase(unique(begin(X), end(X)), end(X));

	for(auto& x : A) x = lower_bound(begin(X), end(X), x) - begin(X);

	int M = sz(X);
	BIT up, dwn; up.init(M); dwn.init(M);
	ll ans = 0;
	for(auto& x : A) {
		ans += dwn.sum(x + 1, M - 1);
		ll DWN = up.sum(0, x - 1);
		dwn.upd(x, DWN);
		up.upd(x, 1);
	}
	cout << ans << nl;
    return 0;
}

Subtask #1
2.0 / 2.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	90 ms	9616 KB	Output is correct
3	Correct	92 ms	9708 KB	Output is correct
4	Correct	83 ms	9704 KB	Output is correct
5	Correct	87 ms	9704 KB	Output is correct
6	Correct	95 ms	9708 KB	Output is correct
7	Correct	88 ms	9616 KB	Output is correct
8	Correct	86 ms	9704 KB	Output is correct
9	Correct	86 ms	7444 KB	Output is correct
10	Correct	83 ms	7396 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	24 ms	4984 KB	Output is correct
2	Correct	27 ms	5012 KB	Output is correct
3	Correct	24 ms	4984 KB	Output is correct
4	Correct	25 ms	4984 KB	Output is correct
5	Correct	24 ms	4988 KB	Output is correct
6	Correct	24 ms	4948 KB	Output is correct
7	Correct	24 ms	4988 KB	Output is correct
8	Correct	22 ms	4988 KB	Output is correct
9	Correct	23 ms	4948 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct

Subtask #3
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	24 ms	4984 KB	Output is correct
2	Correct	27 ms	5012 KB	Output is correct
3	Correct	24 ms	4984 KB	Output is correct
4	Correct	25 ms	4984 KB	Output is correct
5	Correct	24 ms	4988 KB	Output is correct
6	Correct	24 ms	4948 KB	Output is correct
7	Correct	24 ms	4988 KB	Output is correct
8	Correct	22 ms	4988 KB	Output is correct
9	Correct	23 ms	4948 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	44 ms	4980 KB	Output is correct
12	Correct	45 ms	4984 KB	Output is correct
13	Correct	45 ms	5008 KB	Output is correct
14	Correct	44 ms	5008 KB	Output is correct
15	Correct	46 ms	5028 KB	Output is correct
16	Correct	43 ms	5008 KB	Output is correct
17	Correct	45 ms	4976 KB	Output is correct
18	Correct	26 ms	4988 KB	Output is correct
19	Correct	23 ms	4948 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct

Subtask #5
28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	3 ms	596 KB	Output is correct
12	Correct	4 ms	596 KB	Output is correct
13	Correct	3 ms	596 KB	Output is correct
14	Correct	3 ms	596 KB	Output is correct
15	Correct	3 ms	540 KB	Output is correct
16	Correct	4 ms	608 KB	Output is correct
17	Correct	3 ms	596 KB	Output is correct
18	Correct	3 ms	468 KB	Output is correct
19	Correct	2 ms	468 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct

Subtask #6
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	24 ms	4984 KB	Output is correct
2	Correct	27 ms	5012 KB	Output is correct
3	Correct	24 ms	4984 KB	Output is correct
4	Correct	25 ms	4984 KB	Output is correct
5	Correct	24 ms	4988 KB	Output is correct
6	Correct	24 ms	4948 KB	Output is correct
7	Correct	24 ms	4988 KB	Output is correct
8	Correct	22 ms	4988 KB	Output is correct
9	Correct	23 ms	4948 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	44 ms	4980 KB	Output is correct
12	Correct	45 ms	4984 KB	Output is correct
13	Correct	45 ms	5008 KB	Output is correct
14	Correct	44 ms	5008 KB	Output is correct
15	Correct	46 ms	5028 KB	Output is correct
16	Correct	43 ms	5008 KB	Output is correct
17	Correct	45 ms	4976 KB	Output is correct
18	Correct	26 ms	4988 KB	Output is correct
19	Correct	23 ms	4948 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	108 ms	6412 KB	Output is correct
22	Correct	101 ms	6496 KB	Output is correct
23	Correct	100 ms	6416 KB	Output is correct
24	Correct	104 ms	6500 KB	Output is correct
25	Correct	103 ms	6420 KB	Output is correct
26	Correct	100 ms	6416 KB	Output is correct
27	Correct	102 ms	6412 KB	Output is correct
28	Correct	56 ms	6476 KB	Output is correct
29	Correct	59 ms	6412 KB	Output is correct
30	Correct	0 ms	212 KB	Output is correct

Subtask #7
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	90 ms	9616 KB	Output is correct
3	Correct	92 ms	9708 KB	Output is correct
4	Correct	83 ms	9704 KB	Output is correct
5	Correct	87 ms	9704 KB	Output is correct
6	Correct	95 ms	9708 KB	Output is correct
7	Correct	88 ms	9616 KB	Output is correct
8	Correct	86 ms	9704 KB	Output is correct
9	Correct	86 ms	7444 KB	Output is correct
10	Correct	83 ms	7396 KB	Output is correct
11	Correct	24 ms	4984 KB	Output is correct
12	Correct	27 ms	5012 KB	Output is correct
13	Correct	24 ms	4984 KB	Output is correct
14	Correct	25 ms	4984 KB	Output is correct
15	Correct	24 ms	4988 KB	Output is correct
16	Correct	24 ms	4948 KB	Output is correct
17	Correct	24 ms	4988 KB	Output is correct
18	Correct	22 ms	4988 KB	Output is correct
19	Correct	23 ms	4948 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	44 ms	4980 KB	Output is correct
22	Correct	45 ms	4984 KB	Output is correct
23	Correct	45 ms	5008 KB	Output is correct
24	Correct	44 ms	5008 KB	Output is correct
25	Correct	46 ms	5028 KB	Output is correct
26	Correct	43 ms	5008 KB	Output is correct
27	Correct	45 ms	4976 KB	Output is correct
28	Correct	26 ms	4988 KB	Output is correct
29	Correct	23 ms	4948 KB	Output is correct
30	Correct	0 ms	212 KB	Output is correct
31	Correct	0 ms	212 KB	Output is correct
32	Correct	0 ms	212 KB	Output is correct
33	Correct	0 ms	212 KB	Output is correct
34	Correct	1 ms	212 KB	Output is correct
35	Correct	1 ms	212 KB	Output is correct
36	Correct	0 ms	340 KB	Output is correct
37	Correct	0 ms	212 KB	Output is correct
38	Correct	1 ms	212 KB	Output is correct
39	Correct	1 ms	212 KB	Output is correct
40	Correct	1 ms	212 KB	Output is correct
41	Correct	3 ms	596 KB	Output is correct
42	Correct	4 ms	596 KB	Output is correct
43	Correct	3 ms	596 KB	Output is correct
44	Correct	3 ms	596 KB	Output is correct
45	Correct	3 ms	540 KB	Output is correct
46	Correct	4 ms	608 KB	Output is correct
47	Correct	3 ms	596 KB	Output is correct
48	Correct	3 ms	468 KB	Output is correct
49	Correct	2 ms	468 KB	Output is correct
50	Correct	0 ms	212 KB	Output is correct
51	Correct	108 ms	6412 KB	Output is correct
52	Correct	101 ms	6496 KB	Output is correct
53	Correct	100 ms	6416 KB	Output is correct
54	Correct	104 ms	6500 KB	Output is correct
55	Correct	103 ms	6420 KB	Output is correct
56	Correct	100 ms	6416 KB	Output is correct
57	Correct	102 ms	6412 KB	Output is correct
58	Correct	56 ms	6476 KB	Output is correct
59	Correct	59 ms	6412 KB	Output is correct
60	Correct	0 ms	212 KB	Output is correct
61	Correct	131 ms	9620 KB	Output is correct
62	Correct	132 ms	9676 KB	Output is correct
63	Correct	133 ms	9744 KB	Output is correct
64	Correct	131 ms	9616 KB	Output is correct
65	Correct	146 ms	9584 KB	Output is correct
66	Correct	134 ms	9712 KB	Output is correct
67	Correct	129 ms	9704 KB	Output is correct
68	Correct	123 ms	7392 KB	Output is correct
69	Correct	103 ms	7044 KB	Output is correct
70	Correct	0 ms	212 KB	Output is correct

답안 #830144

Compilation message

Subtask #1 2.0 / 2.0

Subtask #2 4.0 / 4.0

Subtask #3 9.0 / 9.0

Subtask #4 36.0 / 36.0

Subtask #5 28.0 / 28.0

Subtask #6 9.0 / 9.0

Subtask #7 12.0 / 12.0

Subtask #1
2.0 / 2.0

Subtask #2
4.0 / 4.0

Subtask #3
9.0 / 9.0

Subtask #4
36.0 / 36.0

Subtask #5
28.0 / 28.0

Subtask #6
9.0 / 9.0

Subtask #7
12.0 / 12.0