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답안 #337511

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
337511 2020-12-21T03:19:05 Z ncduy0303 Mountains (NOI20_mountains) C++17
100 / 100
 878 ms 32000 KB 
#include <bits/stdc++.h>

using namespace std;

#define ar array
#define ll long long

const int MAX_N = 1e5 + 1;
const ll MOD = 1e9 + 7;
const ll INF = 1e9;

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
template <class T> using ordered_set = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;
template <class K, class V> using ordered_map = tree<K, V, less<K>, rb_tree_tag, tree_order_statistics_node_update>;

void solve() {
    int n; cin >> n;
    vector<ll> a(n);
    for (ll &x : a) cin >> x;
    vector<ll> lb(n), rb(n);
    ordered_set<ar<ll,2>> os;
    for (int i = 0; i < n; i++) {
        lb[i] = os.order_of_key({a[i], 0});
        os.insert({a[i], i});
    }
    os.clear();
    for (int i = n - 1; i >= 0; i--) {
        rb[i] = os.order_of_key({a[i], 0});
        os.insert({a[i], i});
    }
    ll ans = 0;
    for (int i = 0; i < n; i++) ans += lb[i] * rb[i];
    cout << ans << "\n";
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int tc = 1;
    // cin >> tc;
    for (int t = 1; t <= tc; t++) {
        // cout << "Case #" << t  << ": ";
        solve();
    }
}

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 497 ms 26688 KB Output is correct
3 Correct 508 ms 31724 KB Output is correct
4 Correct 500 ms 31852 KB Output is correct
5 Correct 511 ms 31852 KB Output is correct
6 Correct 519 ms 31852 KB Output is correct
7 Correct 498 ms 31852 KB Output is correct
8 Correct 508 ms 31852 KB Output is correct
9 Correct 507 ms 31852 KB Output is correct
10 Correct 501 ms 31724 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 372 ms 26732 KB Output is correct
2 Correct 368 ms 26732 KB Output is correct
3 Correct 373 ms 26860 KB Output is correct
4 Correct 375 ms 26732 KB Output is correct
5 Correct 379 ms 26780 KB Output is correct
6 Correct 426 ms 26852 KB Output is correct
7 Correct 392 ms 26732 KB Output is correct
8 Correct 441 ms 26832 KB Output is correct
9 Correct 460 ms 26732 KB Output is correct
10 Correct 1 ms 364 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 372 ms 26732 KB Output is correct
2 Correct 368 ms 26732 KB Output is correct
3 Correct 373 ms 26860 KB Output is correct
4 Correct 375 ms 26732 KB Output is correct
5 Correct 379 ms 26780 KB Output is correct
6 Correct 426 ms 26852 KB Output is correct
7 Correct 392 ms 26732 KB Output is correct
8 Correct 441 ms 26832 KB Output is correct
9 Correct 460 ms 26732 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 696 ms 27100 KB Output is correct
12 Correct 694 ms 27188 KB Output is correct
13 Correct 685 ms 27116 KB Output is correct
14 Correct 667 ms 27116 KB Output is correct
15 Correct 660 ms 27116 KB Output is correct
16 Correct 662 ms 27264 KB Output is correct
17 Correct 669 ms 27112 KB Output is correct
18 Correct 463 ms 27244 KB Output is correct
19 Correct 465 ms 27016 KB Output is correct
20 Correct 1 ms 364 KB Output is correct

Subtask #4
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct

Subtask #5
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 11 ms 1388 KB Output is correct
12 Correct 11 ms 1388 KB Output is correct
13 Correct 12 ms 1388 KB Output is correct
14 Correct 11 ms 1388 KB Output is correct
15 Correct 11 ms 1388 KB Output is correct
16 Correct 11 ms 1388 KB Output is correct
17 Correct 11 ms 1388 KB Output is correct
18 Correct 11 ms 1388 KB Output is correct
19 Correct 10 ms 1280 KB Output is correct
20 Correct 1 ms 364 KB Output is correct

Subtask #6
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 372 ms 26732 KB Output is correct
2 Correct 368 ms 26732 KB Output is correct
3 Correct 373 ms 26860 KB Output is correct
4 Correct 375 ms 26732 KB Output is correct
5 Correct 379 ms 26780 KB Output is correct
6 Correct 426 ms 26852 KB Output is correct
7 Correct 392 ms 26732 KB Output is correct
8 Correct 441 ms 26832 KB Output is correct
9 Correct 460 ms 26732 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 696 ms 27100 KB Output is correct
12 Correct 694 ms 27188 KB Output is correct
13 Correct 685 ms 27116 KB Output is correct
14 Correct 667 ms 27116 KB Output is correct
15 Correct 660 ms 27116 KB Output is correct
16 Correct 662 ms 27264 KB Output is correct
17 Correct 669 ms 27112 KB Output is correct
18 Correct 463 ms 27244 KB Output is correct
19 Correct 465 ms 27016 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 878 ms 28012 KB Output is correct
22 Correct 844 ms 28140 KB Output is correct
23 Correct 863 ms 28080 KB Output is correct
24 Correct 842 ms 28012 KB Output is correct
25 Correct 848 ms 28012 KB Output is correct
26 Correct 841 ms 28196 KB Output is correct
27 Correct 858 ms 28012 KB Output is correct
28 Correct 475 ms 28012 KB Output is correct
29 Correct 471 ms 28012 KB Output is correct
30 Correct 1 ms 364 KB Output is correct

Subtask #7
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 497 ms 26688 KB Output is correct
3 Correct 508 ms 31724 KB Output is correct
4 Correct 500 ms 31852 KB Output is correct
5 Correct 511 ms 31852 KB Output is correct
6 Correct 519 ms 31852 KB Output is correct
7 Correct 498 ms 31852 KB Output is correct
8 Correct 508 ms 31852 KB Output is correct
9 Correct 507 ms 31852 KB Output is correct
10 Correct 501 ms 31724 KB Output is correct
11 Correct 372 ms 26732 KB Output is correct
12 Correct 368 ms 26732 KB Output is correct
13 Correct 373 ms 26860 KB Output is correct
14 Correct 375 ms 26732 KB Output is correct
15 Correct 379 ms 26780 KB Output is correct
16 Correct 426 ms 26852 KB Output is correct
17 Correct 392 ms 26732 KB Output is correct
18 Correct 441 ms 26832 KB Output is correct
19 Correct 460 ms 26732 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 696 ms 27100 KB Output is correct
22 Correct 694 ms 27188 KB Output is correct
23 Correct 685 ms 27116 KB Output is correct
24 Correct 667 ms 27116 KB Output is correct
25 Correct 660 ms 27116 KB Output is correct
26 Correct 662 ms 27264 KB Output is correct
27 Correct 669 ms 27112 KB Output is correct
28 Correct 463 ms 27244 KB Output is correct
29 Correct 465 ms 27016 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 1 ms 364 KB Output is correct
37 Correct 1 ms 364 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 364 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 11 ms 1388 KB Output is correct
42 Correct 11 ms 1388 KB Output is correct
43 Correct 12 ms 1388 KB Output is correct
44 Correct 11 ms 1388 KB Output is correct
45 Correct 11 ms 1388 KB Output is correct
46 Correct 11 ms 1388 KB Output is correct
47 Correct 11 ms 1388 KB Output is correct
48 Correct 11 ms 1388 KB Output is correct
49 Correct 10 ms 1280 KB Output is correct
50 Correct 1 ms 364 KB Output is correct
51 Correct 878 ms 28012 KB Output is correct
52 Correct 844 ms 28140 KB Output is correct
53 Correct 863 ms 28080 KB Output is correct
54 Correct 842 ms 28012 KB Output is correct
55 Correct 848 ms 28012 KB Output is correct
56 Correct 841 ms 28196 KB Output is correct
57 Correct 858 ms 28012 KB Output is correct
58 Correct 475 ms 28012 KB Output is correct
59 Correct 471 ms 28012 KB Output is correct
60 Correct 1 ms 364 KB Output is correct
61 Correct 824 ms 31652 KB Output is correct
62 Correct 855 ms 31852 KB Output is correct
63 Correct 800 ms 32000 KB Output is correct
64 Correct 805 ms 31852 KB Output is correct
65 Correct 804 ms 31724 KB Output is correct
66 Correct 813 ms 31852 KB Output is correct
67 Correct 812 ms 31980 KB Output is correct
68 Correct 838 ms 31724 KB Output is correct
69 Correct 834 ms 28156 KB Output is correct
70 Correct 1 ms 364 KB Output is correct