oj.uz

Submission #830141

# Submission time Handle Problem Language Result Execution time Memory
830141 2023-08-18T19:59:18 Z NK_ Mountains (NOI20_mountains) C++17
100 / 100
 374 ms 27072 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;

	int M = -1;
	{
		map<ll, int> C; int cur = 0;
		for(auto& x : A) C[x]++;
		for(auto& x : C) x.s = cur++;
		for(auto& x : A) x = C[x];
		M = cur;
	}

	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 1 ms 312 KB Output is correct
2 Correct 133 ms 27060 KB Output is correct
3 Correct 134 ms 26900 KB Output is correct
4 Correct 131 ms 26980 KB Output is correct
5 Correct 154 ms 26960 KB Output is correct
6 Correct 130 ms 26972 KB Output is correct
7 Correct 158 ms 26900 KB Output is correct
8 Correct 142 ms 26968 KB Output is correct
9 Correct 112 ms 17896 KB Output is correct
10 Correct 110 ms 17864 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 3156 KB Output is correct
2 Correct 21 ms 3156 KB Output is correct
3 Correct 20 ms 3156 KB Output is correct
4 Correct 19 ms 3180 KB Output is correct
5 Correct 19 ms 3176 KB Output is correct
6 Correct 19 ms 3156 KB Output is correct
7 Correct 19 ms 3156 KB Output is correct
8 Correct 14 ms 3156 KB Output is correct
9 Correct 15 ms 3152 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 19 ms 3156 KB Output is correct
2 Correct 21 ms 3156 KB Output is correct
3 Correct 20 ms 3156 KB Output is correct
4 Correct 19 ms 3180 KB Output is correct
5 Correct 19 ms 3176 KB Output is correct
6 Correct 19 ms 3156 KB Output is correct
7 Correct 19 ms 3156 KB Output is correct
8 Correct 14 ms 3156 KB Output is correct
9 Correct 15 ms 3152 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 40 ms 3540 KB Output is correct
12 Correct 46 ms 3440 KB Output is correct
13 Correct 42 ms 3464 KB Output is correct
14 Correct 43 ms 3536 KB Output is correct
15 Correct 41 ms 3436 KB Output is correct
16 Correct 43 ms 3440 KB Output is correct
17 Correct 40 ms 3412 KB Output is correct
18 Correct 22 ms 3540 KB Output is correct
19 Correct 20 ms 3412 KB Output is correct
20 Correct 1 ms 212 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 328 KB Output is correct
10 Correct 0 ms 212 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 328 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 5 ms 1108 KB Output is correct
12 Correct 5 ms 1104 KB Output is correct
13 Correct 5 ms 1108 KB Output is correct
14 Correct 5 ms 1136 KB Output is correct
15 Correct 5 ms 1108 KB Output is correct
16 Correct 5 ms 1108 KB Output is correct
17 Correct 5 ms 1108 KB Output is correct
18 Correct 4 ms 844 KB Output is correct
19 Correct 2 ms 468 KB Output is correct
20 Correct 1 ms 256 KB Output is correct

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 3156 KB Output is correct
2 Correct 21 ms 3156 KB Output is correct
3 Correct 20 ms 3156 KB Output is correct
4 Correct 19 ms 3180 KB Output is correct
5 Correct 19 ms 3176 KB Output is correct
6 Correct 19 ms 3156 KB Output is correct
7 Correct 19 ms 3156 KB Output is correct
8 Correct 14 ms 3156 KB Output is correct
9 Correct 15 ms 3152 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 40 ms 3540 KB Output is correct
12 Correct 46 ms 3440 KB Output is correct
13 Correct 42 ms 3464 KB Output is correct
14 Correct 43 ms 3536 KB Output is correct
15 Correct 41 ms 3436 KB Output is correct
16 Correct 43 ms 3440 KB Output is correct
17 Correct 40 ms 3412 KB Output is correct
18 Correct 22 ms 3540 KB Output is correct
19 Correct 20 ms 3412 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 151 ms 10336 KB Output is correct
22 Correct 148 ms 10264 KB Output is correct
23 Correct 149 ms 10344 KB Output is correct
24 Correct 164 ms 10432 KB Output is correct
25 Correct 150 ms 10316 KB Output is correct
26 Correct 148 ms 10344 KB Output is correct
27 Correct 149 ms 10260 KB Output is correct
28 Correct 88 ms 10316 KB Output is correct
29 Correct 78 ms 10316 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 1 ms 312 KB Output is correct
2 Correct 133 ms 27060 KB Output is correct
3 Correct 134 ms 26900 KB Output is correct
4 Correct 131 ms 26980 KB Output is correct
5 Correct 154 ms 26960 KB Output is correct
6 Correct 130 ms 26972 KB Output is correct
7 Correct 158 ms 26900 KB Output is correct
8 Correct 142 ms 26968 KB Output is correct
9 Correct 112 ms 17896 KB Output is correct
10 Correct 110 ms 17864 KB Output is correct
11 Correct 19 ms 3156 KB Output is correct
12 Correct 21 ms 3156 KB Output is correct
13 Correct 20 ms 3156 KB Output is correct
14 Correct 19 ms 3180 KB Output is correct
15 Correct 19 ms 3176 KB Output is correct
16 Correct 19 ms 3156 KB Output is correct
17 Correct 19 ms 3156 KB Output is correct
18 Correct 14 ms 3156 KB Output is correct
19 Correct 15 ms 3152 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 40 ms 3540 KB Output is correct
22 Correct 46 ms 3440 KB Output is correct
23 Correct 42 ms 3464 KB Output is correct
24 Correct 43 ms 3536 KB Output is correct
25 Correct 41 ms 3436 KB Output is correct
26 Correct 43 ms 3440 KB Output is correct
27 Correct 40 ms 3412 KB Output is correct
28 Correct 22 ms 3540 KB Output is correct
29 Correct 20 ms 3412 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 0 ms 328 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 5 ms 1108 KB Output is correct
42 Correct 5 ms 1104 KB Output is correct
43 Correct 5 ms 1108 KB Output is correct
44 Correct 5 ms 1136 KB Output is correct
45 Correct 5 ms 1108 KB Output is correct
46 Correct 5 ms 1108 KB Output is correct
47 Correct 5 ms 1108 KB Output is correct
48 Correct 4 ms 844 KB Output is correct
49 Correct 2 ms 468 KB Output is correct
50 Correct 1 ms 256 KB Output is correct
51 Correct 151 ms 10336 KB Output is correct
52 Correct 148 ms 10264 KB Output is correct
53 Correct 149 ms 10344 KB Output is correct
54 Correct 164 ms 10432 KB Output is correct
55 Correct 150 ms 10316 KB Output is correct
56 Correct 148 ms 10344 KB Output is correct
57 Correct 149 ms 10260 KB Output is correct
58 Correct 88 ms 10316 KB Output is correct
59 Correct 78 ms 10316 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Correct 319 ms 27000 KB Output is correct
62 Correct 358 ms 26996 KB Output is correct
63 Correct 322 ms 27000 KB Output is correct
64 Correct 374 ms 27072 KB Output is correct
65 Correct 305 ms 27000 KB Output is correct
66 Correct 365 ms 26996 KB Output is correct
67 Correct 325 ms 27008 KB Output is correct
68 Correct 200 ms 17888 KB Output is correct
69 Correct 189 ms 12524 KB Output is correct
70 Correct 1 ms 212 KB Output is correct