답안 #226363

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
226363	2020-04-23T13:40:57 Z	ezdp	Mountains (NOI20_mountains)	C++14	100 / 100	192 ms	17784 KB

Mountains

/**
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
*/

Subtask #1
2.0 / 2.0

#	결과	실행 시간	메모리	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

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	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

Subtask #3
9.0 / 9.0

#	결과	실행 시간	메모리	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

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	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

Subtask #5
28.0 / 28.0

#	결과	실행 시간	메모리	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

Subtask #6
9.0 / 9.0

#	결과	실행 시간	메모리	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

Subtask #7
12.0 / 12.0

#	결과	실행 시간	메모리	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

답안 #226363

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