oj.uz

Submission #830144

# Submission time Handle Problem Language Result Execution time Memory
830144 2023-08-18T20:00:40 Z NK_ Mountains (NOI20_mountains) C++17
100 / 100
 146 ms 9744 KB 
// 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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