Submission #226363

# Submission time Handle Problem Language Result Execution time Memory
226363 2020-04-23T13:40:57 Z ezdp Mountains (NOI20_mountains) C++14
100 / 100
192 ms 17784 KB
/**
link: https://oj.uz/problem/view/NOI20_mountains
*/
#include<bits/stdc++.h>
#define endl '\n'
#define pb push_back
#define fr first
#define sc second
#define ll long long int
#define bit(idx) idx&(-idx)
#define bin(x, a) bitset<a>(x)
#define all(A) A.begin(), A.end()
#define debug(x) cout << #x << " = " << x << endl;
using namespace std;

const int MAXN = 3e5 + 5;

ll n, A[MAXN], BIT[MAXN], tmp[MAXN], sz;

void upd(int idx){
	for(int _idx = idx + 1; _idx < MAXN; _idx += bit(_idx)){
		++ BIT[_idx];
	}
}

ll qry(int idx){
	ll ret = 0;
	for(int _idx = idx + 1; _idx > 0; _idx -= bit(_idx)){
		ret += BIT[_idx];
	}
	return ret;
}

int main(){
	ios_base::sync_with_stdio(NULL); cin.tie(); cout.tie();
	cin >> n;
	for(int i = 0; i < n; i ++){
		cin >> A[i];
		tmp[sz ++] = A[i];
	}
	sort(tmp, tmp + sz);
	sz = unique(tmp, tmp + sz) - tmp;
	for(int i = 0; i < n; i ++)
		A[i] = lower_bound(tmp, tmp + sz, A[i]) - tmp;
	ll L[MAXN] = {0}, R[MAXN] = {0};
	for(int i = 0; i < n; i ++){
		L[i] = qry(A[i] - 1);
		upd(A[i]);
	}
	memset(BIT, 0, sizeof(BIT));
	for(int i = n - 1; i >= 0; i --){
		R[i] = qry(A[i] - 1);
		upd(A[i]);
	}
	/// cout << "A: "; for(int i = 0; i < n; i ++) cout << A[i] << " "; cout << endl;
	/// cout << "L: "; for(int i = 0; i < n; i ++) cout << L[i] << " "; cout << endl;
	/// cout << "R: "; for(int i = 0; i < n; i ++) cout << R[i] << " "; cout << endl;
	ll ans = 0;
	for(int i = 0; i < n; i ++)
		ans += L[i] * R[i];
	cout << ans << endl;
}
/**
5
0 1 1 0 1

2

6
500 20 900 0 900 70

7
*/
# Verdict Execution time Memory Grader output
1 Correct 8 ms 7424 KB Output is correct
2 Correct 122 ms 17656 KB Output is correct
3 Correct 116 ms 17656 KB Output is correct
4 Correct 120 ms 17528 KB Output is correct
5 Correct 131 ms 17648 KB Output is correct
6 Correct 124 ms 17656 KB Output is correct
7 Correct 126 ms 17656 KB Output is correct
8 Correct 120 ms 17552 KB Output is correct
9 Correct 128 ms 17656 KB Output is correct
10 Correct 126 ms 17656 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 75 ms 12664 KB Output is correct
2 Correct 72 ms 12664 KB Output is correct
3 Correct 70 ms 12664 KB Output is correct
4 Correct 70 ms 12664 KB Output is correct
5 Correct 71 ms 12668 KB Output is correct
6 Correct 71 ms 12664 KB Output is correct
7 Correct 71 ms 12664 KB Output is correct
8 Correct 67 ms 12664 KB Output is correct
9 Correct 66 ms 12792 KB Output is correct
10 Correct 8 ms 7424 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 75 ms 12664 KB Output is correct
2 Correct 72 ms 12664 KB Output is correct
3 Correct 70 ms 12664 KB Output is correct
4 Correct 70 ms 12664 KB Output is correct
5 Correct 71 ms 12668 KB Output is correct
6 Correct 71 ms 12664 KB Output is correct
7 Correct 71 ms 12664 KB Output is correct
8 Correct 67 ms 12664 KB Output is correct
9 Correct 66 ms 12792 KB Output is correct
10 Correct 8 ms 7424 KB Output is correct
11 Correct 84 ms 12920 KB Output is correct
12 Correct 86 ms 12920 KB Output is correct
13 Correct 85 ms 12920 KB Output is correct
14 Correct 85 ms 12920 KB Output is correct
15 Correct 85 ms 12920 KB Output is correct
16 Correct 85 ms 12860 KB Output is correct
17 Correct 84 ms 12920 KB Output is correct
18 Correct 63 ms 12920 KB Output is correct
19 Correct 64 ms 12920 KB Output is correct
20 Correct 8 ms 7424 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 8 ms 7424 KB Output is correct
2 Correct 8 ms 7424 KB Output is correct
3 Correct 8 ms 7424 KB Output is correct
4 Correct 9 ms 7424 KB Output is correct
5 Correct 8 ms 7424 KB Output is correct
6 Correct 8 ms 7424 KB Output is correct
7 Correct 8 ms 7424 KB Output is correct
8 Correct 9 ms 7424 KB Output is correct
9 Correct 8 ms 7424 KB Output is correct
10 Correct 8 ms 7424 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 8 ms 7424 KB Output is correct
2 Correct 8 ms 7424 KB Output is correct
3 Correct 8 ms 7424 KB Output is correct
4 Correct 9 ms 7424 KB Output is correct
5 Correct 8 ms 7424 KB Output is correct
6 Correct 8 ms 7424 KB Output is correct
7 Correct 8 ms 7424 KB Output is correct
8 Correct 9 ms 7424 KB Output is correct
9 Correct 8 ms 7424 KB Output is correct
10 Correct 8 ms 7424 KB Output is correct
11 Correct 13 ms 7680 KB Output is correct
12 Correct 13 ms 7552 KB Output is correct
13 Correct 14 ms 7680 KB Output is correct
14 Correct 13 ms 7680 KB Output is correct
15 Correct 13 ms 7680 KB Output is correct
16 Correct 14 ms 7680 KB Output is correct
17 Correct 18 ms 7936 KB Output is correct
18 Correct 13 ms 7808 KB Output is correct
19 Correct 11 ms 7552 KB Output is correct
20 Correct 8 ms 7424 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 75 ms 12664 KB Output is correct
2 Correct 72 ms 12664 KB Output is correct
3 Correct 70 ms 12664 KB Output is correct
4 Correct 70 ms 12664 KB Output is correct
5 Correct 71 ms 12668 KB Output is correct
6 Correct 71 ms 12664 KB Output is correct
7 Correct 71 ms 12664 KB Output is correct
8 Correct 67 ms 12664 KB Output is correct
9 Correct 66 ms 12792 KB Output is correct
10 Correct 8 ms 7424 KB Output is correct
11 Correct 84 ms 12920 KB Output is correct
12 Correct 86 ms 12920 KB Output is correct
13 Correct 85 ms 12920 KB Output is correct
14 Correct 85 ms 12920 KB Output is correct
15 Correct 85 ms 12920 KB Output is correct
16 Correct 85 ms 12860 KB Output is correct
17 Correct 84 ms 12920 KB Output is correct
18 Correct 63 ms 12920 KB Output is correct
19 Correct 64 ms 12920 KB Output is correct
20 Correct 8 ms 7424 KB Output is correct
21 Correct 144 ms 13816 KB Output is correct
22 Correct 144 ms 13816 KB Output is correct
23 Correct 143 ms 13816 KB Output is correct
24 Correct 145 ms 13816 KB Output is correct
25 Correct 144 ms 13816 KB Output is correct
26 Correct 143 ms 13816 KB Output is correct
27 Correct 143 ms 13820 KB Output is correct
28 Correct 87 ms 13816 KB Output is correct
29 Correct 87 ms 13816 KB Output is correct
30 Correct 8 ms 7424 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 8 ms 7424 KB Output is correct
2 Correct 122 ms 17656 KB Output is correct
3 Correct 116 ms 17656 KB Output is correct
4 Correct 120 ms 17528 KB Output is correct
5 Correct 131 ms 17648 KB Output is correct
6 Correct 124 ms 17656 KB Output is correct
7 Correct 126 ms 17656 KB Output is correct
8 Correct 120 ms 17552 KB Output is correct
9 Correct 128 ms 17656 KB Output is correct
10 Correct 126 ms 17656 KB Output is correct
11 Correct 75 ms 12664 KB Output is correct
12 Correct 72 ms 12664 KB Output is correct
13 Correct 70 ms 12664 KB Output is correct
14 Correct 70 ms 12664 KB Output is correct
15 Correct 71 ms 12668 KB Output is correct
16 Correct 71 ms 12664 KB Output is correct
17 Correct 71 ms 12664 KB Output is correct
18 Correct 67 ms 12664 KB Output is correct
19 Correct 66 ms 12792 KB Output is correct
20 Correct 8 ms 7424 KB Output is correct
21 Correct 84 ms 12920 KB Output is correct
22 Correct 86 ms 12920 KB Output is correct
23 Correct 85 ms 12920 KB Output is correct
24 Correct 85 ms 12920 KB Output is correct
25 Correct 85 ms 12920 KB Output is correct
26 Correct 85 ms 12860 KB Output is correct
27 Correct 84 ms 12920 KB Output is correct
28 Correct 63 ms 12920 KB Output is correct
29 Correct 64 ms 12920 KB Output is correct
30 Correct 8 ms 7424 KB Output is correct
31 Correct 8 ms 7424 KB Output is correct
32 Correct 8 ms 7424 KB Output is correct
33 Correct 8 ms 7424 KB Output is correct
34 Correct 9 ms 7424 KB Output is correct
35 Correct 8 ms 7424 KB Output is correct
36 Correct 8 ms 7424 KB Output is correct
37 Correct 8 ms 7424 KB Output is correct
38 Correct 9 ms 7424 KB Output is correct
39 Correct 8 ms 7424 KB Output is correct
40 Correct 8 ms 7424 KB Output is correct
41 Correct 13 ms 7680 KB Output is correct
42 Correct 13 ms 7552 KB Output is correct
43 Correct 14 ms 7680 KB Output is correct
44 Correct 13 ms 7680 KB Output is correct
45 Correct 13 ms 7680 KB Output is correct
46 Correct 14 ms 7680 KB Output is correct
47 Correct 18 ms 7936 KB Output is correct
48 Correct 13 ms 7808 KB Output is correct
49 Correct 11 ms 7552 KB Output is correct
50 Correct 8 ms 7424 KB Output is correct
51 Correct 144 ms 13816 KB Output is correct
52 Correct 144 ms 13816 KB Output is correct
53 Correct 143 ms 13816 KB Output is correct
54 Correct 145 ms 13816 KB Output is correct
55 Correct 144 ms 13816 KB Output is correct
56 Correct 143 ms 13816 KB Output is correct
57 Correct 143 ms 13820 KB Output is correct
58 Correct 87 ms 13816 KB Output is correct
59 Correct 87 ms 13816 KB Output is correct
60 Correct 8 ms 7424 KB Output is correct
61 Correct 192 ms 17656 KB Output is correct
62 Correct 192 ms 17784 KB Output is correct
63 Correct 184 ms 17656 KB Output is correct
64 Correct 188 ms 17784 KB Output is correct
65 Correct 188 ms 17656 KB Output is correct
66 Correct 182 ms 17656 KB Output is correct
67 Correct 185 ms 17656 KB Output is correct
68 Correct 183 ms 17656 KB Output is correct
69 Correct 148 ms 13944 KB Output is correct
70 Correct 8 ms 7424 KB Output is correct