답안 #343393

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
343393	2021-01-03T20:58:42 Z	zapan4	Mountains (NOI20_mountains)	C++17	100 / 100	694 ms	36632 KB

Mountains

#include <iostream>
#include <cmath> 
#include <stdio.h>
#include <array>
#include <vector>
#include <list>
#include <algorithm>
#include <utility>
#include <string>
#include <sstream>
#include <map>
#include <queue>
#include <stack>
#include <set>
#include <unordered_set>
#include <unordered_map>
#include <iomanip>
#define pp pair<int,int>
#define pll pair<ll, ll>
#define ll long long
using namespace std;

map<ll, ll> normalizing;

ll bit[300003];
ll mountains[300001];
ll mountains1[300001];
ll left1[300001];
ll right1[300001];

ll calculate(int a) {
	ll amount = 0;
	while (a > 0) {
		amount += bit[a];
		a -= (a & -a);
	}
	return amount;
}

void update(int a) {
	while (a <= 300003) {
		bit[a] += 1;
		a += (a & -a);
	}
}

int main() {
	//freopen(".in", "r", stdin);
	//freopen(".out", "w", stdout);
	ll n;
	cin >> n;
	for (int i = 0; i < n; i++) {
		ll a;
		cin >> a;
		mountains[i] = a;
		mountains1[i] = a;
	}
	sort(mountains1, mountains1+n);
	ll counter = 1;
	for (int i = 0; i < n; i++) {
		if (normalizing.find(mountains1[i]) == normalizing.end()) {
			normalizing[mountains1[i]] = counter;
			counter++;
		}
	}
	for (int i = 0; i < n; i++) {
		mountains[i] = normalizing[mountains[i]];
	}
	/*for (int i = 0; i < n; i++) {
		cout << mountains[i] << endl;
	}*/
	for (int i = 0; i < n; i++) {
		left1[i] = calculate(mountains[i]-1);
		update(mountains[i]);
	}
	/*for (int i = 0; i < n; i++) {
		cout << left1[i] << endl;
	}*/
	for (int i = 0; i < 300003; i++) {
		bit[i] = 0;
	}
	for (int i = n-1; i >= 0; i--) {
		right1[i] = calculate(mountains[i]-1);
		update(mountains[i]);
	}
	/*for (int i = 0; i < n; i++) {
		cout << right1[i] << endl;
	}*/
	ll answer = 0;
	for (int i = 0; i < n; i++) {
		answer += left1[i]*right1[i];
	}
	cout << answer << endl;
}

Subtask #1
2.0 / 2.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2668 KB	Output is correct
2	Correct	381 ms	36480 KB	Output is correct
3	Correct	388 ms	36408 KB	Output is correct
4	Correct	392 ms	36332 KB	Output is correct
5	Correct	385 ms	36332 KB	Output is correct
6	Correct	385 ms	36484 KB	Output is correct
7	Correct	381 ms	36348 KB	Output is correct
8	Correct	388 ms	36332 KB	Output is correct
9	Correct	358 ms	27372 KB	Output is correct
10	Correct	355 ms	27392 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	100 ms	12652 KB	Output is correct
2	Correct	97 ms	12652 KB	Output is correct
3	Correct	113 ms	12780 KB	Output is correct
4	Correct	103 ms	12672 KB	Output is correct
5	Correct	111 ms	12652 KB	Output is correct
6	Correct	106 ms	12652 KB	Output is correct
7	Correct	100 ms	12652 KB	Output is correct
8	Correct	93 ms	12656 KB	Output is correct
9	Correct	97 ms	12596 KB	Output is correct
10	Correct	2 ms	2668 KB	Output is correct

Subtask #3
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	100 ms	12652 KB	Output is correct
2	Correct	97 ms	12652 KB	Output is correct
3	Correct	113 ms	12780 KB	Output is correct
4	Correct	103 ms	12672 KB	Output is correct
5	Correct	111 ms	12652 KB	Output is correct
6	Correct	106 ms	12652 KB	Output is correct
7	Correct	100 ms	12652 KB	Output is correct
8	Correct	93 ms	12656 KB	Output is correct
9	Correct	97 ms	12596 KB	Output is correct
10	Correct	2 ms	2668 KB	Output is correct
11	Correct	120 ms	12996 KB	Output is correct
12	Correct	117 ms	12908 KB	Output is correct
13	Correct	122 ms	12908 KB	Output is correct
14	Correct	118 ms	12908 KB	Output is correct
15	Correct	118 ms	13036 KB	Output is correct
16	Correct	115 ms	12908 KB	Output is correct
17	Correct	125 ms	12908 KB	Output is correct
18	Correct	108 ms	12908 KB	Output is correct
19	Correct	95 ms	13036 KB	Output is correct
20	Correct	2 ms	2668 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	2796 KB	Output is correct
2	Correct	2 ms	2796 KB	Output is correct
3	Correct	2 ms	2796 KB	Output is correct
4	Correct	2 ms	2796 KB	Output is correct
5	Correct	3 ms	2796 KB	Output is correct
6	Correct	3 ms	2796 KB	Output is correct
7	Correct	2 ms	2796 KB	Output is correct
8	Correct	2 ms	2796 KB	Output is correct
9	Correct	3 ms	2668 KB	Output is correct
10	Correct	2 ms	2668 KB	Output is correct

Subtask #5
28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	2796 KB	Output is correct
2	Correct	2 ms	2796 KB	Output is correct
3	Correct	2 ms	2796 KB	Output is correct
4	Correct	2 ms	2796 KB	Output is correct
5	Correct	3 ms	2796 KB	Output is correct
6	Correct	3 ms	2796 KB	Output is correct
7	Correct	2 ms	2796 KB	Output is correct
8	Correct	2 ms	2796 KB	Output is correct
9	Correct	3 ms	2668 KB	Output is correct
10	Correct	2 ms	2668 KB	Output is correct
11	Correct	17 ms	3820 KB	Output is correct
12	Correct	14 ms	3820 KB	Output is correct
13	Correct	14 ms	3820 KB	Output is correct
14	Correct	18 ms	3840 KB	Output is correct
15	Correct	14 ms	3820 KB	Output is correct
16	Correct	14 ms	3820 KB	Output is correct
17	Correct	20 ms	3820 KB	Output is correct
18	Correct	13 ms	3628 KB	Output is correct
19	Correct	6 ms	3052 KB	Output is correct
20	Correct	2 ms	2668 KB	Output is correct

Subtask #6
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	100 ms	12652 KB	Output is correct
2	Correct	97 ms	12652 KB	Output is correct
3	Correct	113 ms	12780 KB	Output is correct
4	Correct	103 ms	12672 KB	Output is correct
5	Correct	111 ms	12652 KB	Output is correct
6	Correct	106 ms	12652 KB	Output is correct
7	Correct	100 ms	12652 KB	Output is correct
8	Correct	93 ms	12656 KB	Output is correct
9	Correct	97 ms	12596 KB	Output is correct
10	Correct	2 ms	2668 KB	Output is correct
11	Correct	120 ms	12996 KB	Output is correct
12	Correct	117 ms	12908 KB	Output is correct
13	Correct	122 ms	12908 KB	Output is correct
14	Correct	118 ms	12908 KB	Output is correct
15	Correct	118 ms	13036 KB	Output is correct
16	Correct	115 ms	12908 KB	Output is correct
17	Correct	125 ms	12908 KB	Output is correct
18	Correct	108 ms	12908 KB	Output is correct
19	Correct	95 ms	13036 KB	Output is correct
20	Correct	2 ms	2668 KB	Output is correct
21	Correct	313 ms	19856 KB	Output is correct
22	Correct	317 ms	19712 KB	Output is correct
23	Correct	317 ms	19820 KB	Output is correct
24	Correct	332 ms	19692 KB	Output is correct
25	Correct	364 ms	19820 KB	Output is correct
26	Correct	315 ms	19820 KB	Output is correct
27	Correct	345 ms	19692 KB	Output is correct
28	Correct	192 ms	19692 KB	Output is correct
29	Correct	192 ms	19724 KB	Output is correct
30	Correct	2 ms	2668 KB	Output is correct

Subtask #7
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2668 KB	Output is correct
2	Correct	381 ms	36480 KB	Output is correct
3	Correct	388 ms	36408 KB	Output is correct
4	Correct	392 ms	36332 KB	Output is correct
5	Correct	385 ms	36332 KB	Output is correct
6	Correct	385 ms	36484 KB	Output is correct
7	Correct	381 ms	36348 KB	Output is correct
8	Correct	388 ms	36332 KB	Output is correct
9	Correct	358 ms	27372 KB	Output is correct
10	Correct	355 ms	27392 KB	Output is correct
11	Correct	100 ms	12652 KB	Output is correct
12	Correct	97 ms	12652 KB	Output is correct
13	Correct	113 ms	12780 KB	Output is correct
14	Correct	103 ms	12672 KB	Output is correct
15	Correct	111 ms	12652 KB	Output is correct
16	Correct	106 ms	12652 KB	Output is correct
17	Correct	100 ms	12652 KB	Output is correct
18	Correct	93 ms	12656 KB	Output is correct
19	Correct	97 ms	12596 KB	Output is correct
20	Correct	2 ms	2668 KB	Output is correct
21	Correct	120 ms	12996 KB	Output is correct
22	Correct	117 ms	12908 KB	Output is correct
23	Correct	122 ms	12908 KB	Output is correct
24	Correct	118 ms	12908 KB	Output is correct
25	Correct	118 ms	13036 KB	Output is correct
26	Correct	115 ms	12908 KB	Output is correct
27	Correct	125 ms	12908 KB	Output is correct
28	Correct	108 ms	12908 KB	Output is correct
29	Correct	95 ms	13036 KB	Output is correct
30	Correct	2 ms	2668 KB	Output is correct
31	Correct	3 ms	2796 KB	Output is correct
32	Correct	2 ms	2796 KB	Output is correct
33	Correct	2 ms	2796 KB	Output is correct
34	Correct	2 ms	2796 KB	Output is correct
35	Correct	3 ms	2796 KB	Output is correct
36	Correct	3 ms	2796 KB	Output is correct
37	Correct	2 ms	2796 KB	Output is correct
38	Correct	2 ms	2796 KB	Output is correct
39	Correct	3 ms	2668 KB	Output is correct
40	Correct	2 ms	2668 KB	Output is correct
41	Correct	17 ms	3820 KB	Output is correct
42	Correct	14 ms	3820 KB	Output is correct
43	Correct	14 ms	3820 KB	Output is correct
44	Correct	18 ms	3840 KB	Output is correct
45	Correct	14 ms	3820 KB	Output is correct
46	Correct	14 ms	3820 KB	Output is correct
47	Correct	20 ms	3820 KB	Output is correct
48	Correct	13 ms	3628 KB	Output is correct
49	Correct	6 ms	3052 KB	Output is correct
50	Correct	2 ms	2668 KB	Output is correct
51	Correct	313 ms	19856 KB	Output is correct
52	Correct	317 ms	19712 KB	Output is correct
53	Correct	317 ms	19820 KB	Output is correct
54	Correct	332 ms	19692 KB	Output is correct
55	Correct	364 ms	19820 KB	Output is correct
56	Correct	315 ms	19820 KB	Output is correct
57	Correct	345 ms	19692 KB	Output is correct
58	Correct	192 ms	19692 KB	Output is correct
59	Correct	192 ms	19724 KB	Output is correct
60	Correct	2 ms	2668 KB	Output is correct
61	Correct	679 ms	36372 KB	Output is correct
62	Correct	686 ms	36632 KB	Output is correct
63	Correct	674 ms	36460 KB	Output is correct
64	Correct	664 ms	36380 KB	Output is correct
65	Correct	671 ms	36332 KB	Output is correct
66	Correct	683 ms	36332 KB	Output is correct
67	Correct	694 ms	36332 KB	Output is correct
68	Correct	550 ms	27372 KB	Output is correct
69	Correct	390 ms	21996 KB	Output is correct
70	Correct	2 ms	2668 KB	Output is correct

답안 #343393

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