oj.uz

Submission #299640

# Submission time Handle Problem Language Result Execution time Memory
299640 2020-09-15T11:20:48 Z zwliew Mountains (NOI20_mountains) C++17
100 / 100
 1152 ms 27128 KB 
#include <algorithm>
#include <array>
#include <bitset>
#include <chrono>
#include <climits>
#include <cmath>
#include <cstring>
#include <deque>
#include <ext/pb_ds/assoc_container.hpp>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
// #include "bits/stdc++.h"

using namespace std;

#ifdef LOCAL
#include "../../_library/cc/debug.h"
#define FILE "test"
#else
#define debug(...) 0
#define FILE "cowjog"
#endif

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

template <class T>
using OrderStatisticTree =
    __gnu_pbds::tree<T,
                     __gnu_pbds::null_type,
                     less<T>,
                     __gnu_pbds::rb_tree_tag,
                     __gnu_pbds::tree_order_statistics_node_update>;

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  if (fopen(FILE ".in", "r")) {
    freopen(FILE ".in", "r", stdin);
    freopen(FILE ".out", "w", stdout);
  }

  // Iterate through each possible middle mountain, and count the number of
  // mountains shorter than the middle mountain on both sides.
  int n;
  cin >> n;
  vector<int64_t> h(n);
  OrderStatisticTree<pair<int64_t, int>> left, right;
  for (int i = 0; i < n; ++i) {
    cin >> h[i];
    right.insert({h[i], i});
  }

  int64_t ans = 0;
  for (int i = 0; i < n - 1; ++i) {
    right.erase(right.lower_bound({h[i], 0}));
    ans +=
        (int64_t)left.order_of_key({h[i], 0}) * right.order_of_key({h[i], 0});
    left.insert({h[i], i});
  }
  cout << ans;
}

Compilation message

Mountains.cpp: In function 'int main()':
Mountains.cpp:48:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   48 |     freopen(FILE ".in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Mountains.cpp:49:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   49 |     freopen(FILE ".out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 626 ms 21624 KB Output is correct
3 Correct 614 ms 27128 KB Output is correct
4 Correct 638 ms 27128 KB Output is correct
5 Correct 630 ms 27000 KB Output is correct
6 Correct 623 ms 27000 KB Output is correct
7 Correct 624 ms 27000 KB Output is correct
8 Correct 625 ms 27128 KB Output is correct
9 Correct 631 ms 27000 KB Output is correct
10 Correct 640 ms 27000 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 416 ms 21624 KB Output is correct
2 Correct 420 ms 21500 KB Output is correct
3 Correct 395 ms 21496 KB Output is correct
4 Correct 396 ms 21496 KB Output is correct
5 Correct 395 ms 21496 KB Output is correct
6 Correct 390 ms 21496 KB Output is correct
7 Correct 429 ms 21496 KB Output is correct
8 Correct 568 ms 21624 KB Output is correct
9 Correct 593 ms 21496 KB Output is correct
10 Correct 1 ms 384 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 416 ms 21624 KB Output is correct
2 Correct 420 ms 21500 KB Output is correct
3 Correct 395 ms 21496 KB Output is correct
4 Correct 396 ms 21496 KB Output is correct
5 Correct 395 ms 21496 KB Output is correct
6 Correct 390 ms 21496 KB Output is correct
7 Correct 429 ms 21496 KB Output is correct
8 Correct 568 ms 21624 KB Output is correct
9 Correct 593 ms 21496 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 802 ms 21624 KB Output is correct
12 Correct 779 ms 21496 KB Output is correct
13 Correct 788 ms 21496 KB Output is correct
14 Correct 785 ms 21496 KB Output is correct
15 Correct 806 ms 21496 KB Output is correct
16 Correct 791 ms 21608 KB Output is correct
17 Correct 791 ms 21496 KB Output is correct
18 Correct 597 ms 21496 KB Output is correct
19 Correct 577 ms 21496 KB Output is correct
20 Correct 1 ms 384 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 13 ms 1280 KB Output is correct
12 Correct 13 ms 1280 KB Output is correct
13 Correct 13 ms 1280 KB Output is correct
14 Correct 13 ms 1152 KB Output is correct
15 Correct 13 ms 1280 KB Output is correct
16 Correct 13 ms 1280 KB Output is correct
17 Correct 13 ms 1280 KB Output is correct
18 Correct 13 ms 1280 KB Output is correct
19 Correct 12 ms 1024 KB Output is correct
20 Correct 1 ms 384 KB Output is correct

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 416 ms 21624 KB Output is correct
2 Correct 420 ms 21500 KB Output is correct
3 Correct 395 ms 21496 KB Output is correct
4 Correct 396 ms 21496 KB Output is correct
5 Correct 395 ms 21496 KB Output is correct
6 Correct 390 ms 21496 KB Output is correct
7 Correct 429 ms 21496 KB Output is correct
8 Correct 568 ms 21624 KB Output is correct
9 Correct 593 ms 21496 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 802 ms 21624 KB Output is correct
12 Correct 779 ms 21496 KB Output is correct
13 Correct 788 ms 21496 KB Output is correct
14 Correct 785 ms 21496 KB Output is correct
15 Correct 806 ms 21496 KB Output is correct
16 Correct 791 ms 21608 KB Output is correct
17 Correct 791 ms 21496 KB Output is correct
18 Correct 597 ms 21496 KB Output is correct
19 Correct 577 ms 21496 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1104 ms 21496 KB Output is correct
22 Correct 1096 ms 21628 KB Output is correct
23 Correct 1110 ms 21684 KB Output is correct
24 Correct 1108 ms 21500 KB Output is correct
25 Correct 1120 ms 21496 KB Output is correct
26 Correct 1094 ms 21496 KB Output is correct
27 Correct 1106 ms 21496 KB Output is correct
28 Correct 621 ms 21496 KB Output is correct
29 Correct 596 ms 21496 KB Output is correct
30 Correct 1 ms 512 KB Output is correct

Subtask #7
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 626 ms 21624 KB Output is correct
3 Correct 614 ms 27128 KB Output is correct
4 Correct 638 ms 27128 KB Output is correct
5 Correct 630 ms 27000 KB Output is correct
6 Correct 623 ms 27000 KB Output is correct
7 Correct 624 ms 27000 KB Output is correct
8 Correct 625 ms 27128 KB Output is correct
9 Correct 631 ms 27000 KB Output is correct
10 Correct 640 ms 27000 KB Output is correct
11 Correct 416 ms 21624 KB Output is correct
12 Correct 420 ms 21500 KB Output is correct
13 Correct 395 ms 21496 KB Output is correct
14 Correct 396 ms 21496 KB Output is correct
15 Correct 395 ms 21496 KB Output is correct
16 Correct 390 ms 21496 KB Output is correct
17 Correct 429 ms 21496 KB Output is correct
18 Correct 568 ms 21624 KB Output is correct
19 Correct 593 ms 21496 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 802 ms 21624 KB Output is correct
22 Correct 779 ms 21496 KB Output is correct
23 Correct 788 ms 21496 KB Output is correct
24 Correct 785 ms 21496 KB Output is correct
25 Correct 806 ms 21496 KB Output is correct
26 Correct 791 ms 21608 KB Output is correct
27 Correct 791 ms 21496 KB Output is correct
28 Correct 597 ms 21496 KB Output is correct
29 Correct 577 ms 21496 KB Output is correct
30 Correct 1 ms 384 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 1 ms 512 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 1 ms 384 KB Output is correct
36 Correct 1 ms 384 KB Output is correct
37 Correct 1 ms 384 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 1 ms 384 KB Output is correct
41 Correct 13 ms 1280 KB Output is correct
42 Correct 13 ms 1280 KB Output is correct
43 Correct 13 ms 1280 KB Output is correct
44 Correct 13 ms 1152 KB Output is correct
45 Correct 13 ms 1280 KB Output is correct
46 Correct 13 ms 1280 KB Output is correct
47 Correct 13 ms 1280 KB Output is correct
48 Correct 13 ms 1280 KB Output is correct
49 Correct 12 ms 1024 KB Output is correct
50 Correct 1 ms 384 KB Output is correct
51 Correct 1104 ms 21496 KB Output is correct
52 Correct 1096 ms 21628 KB Output is correct
53 Correct 1110 ms 21684 KB Output is correct
54 Correct 1108 ms 21500 KB Output is correct
55 Correct 1120 ms 21496 KB Output is correct
56 Correct 1094 ms 21496 KB Output is correct
57 Correct 1106 ms 21496 KB Output is correct
58 Correct 621 ms 21496 KB Output is correct
59 Correct 596 ms 21496 KB Output is correct
60 Correct 1 ms 512 KB Output is correct
61 Correct 1104 ms 27044 KB Output is correct
62 Correct 1086 ms 27000 KB Output is correct
63 Correct 1111 ms 27096 KB Output is correct
64 Correct 1106 ms 27036 KB Output is correct
65 Correct 1090 ms 27000 KB Output is correct
66 Correct 1088 ms 27000 KB Output is correct
67 Correct 1101 ms 27128 KB Output is correct
68 Correct 1152 ms 27128 KB Output is correct
69 Correct 1101 ms 23288 KB Output is correct
70 Correct 1 ms 384 KB Output is correct