oj.uz

Submission #223808

# Submission time Handle Problem Language Result Execution time Memory
223808 2020-04-16T13:39:16 Z bortoz Mountains (NOI20_mountains) C++17
100 / 100
 493 ms 31624 KB 
#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
#define fi first
#define se second

constexpr int MAXN = 1 << 19;

int fw[MAXN];

void add(int p, int v) {
  for (p++; p < MAXN; p += p & -p) {
    fw[p] += v;
  }
}

int sum(int p) {
  int r = 0;
  for (p++; p > 0; p -= p & -p) {
    r += fw[p];
  }
  return r;
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);

  int N;
  cin >> N;
  vector<ll> V(N);
  map<ll, int> M;
  for (ll& i : V) {
    cin >> i;
    M[i] = 0;
  }
  int x = 0;
  for (auto& [k, v] : M) {
    v = x++;
  }
  for (ll& i : V) {
    i = M[i];
  }

  vector<int> L(N), R(N);
  for (int i = 0; i < N; i++) {
    L[i] = sum(V[i] - 1);
    add(V[i], 1);
  }
  fill(fw, fw + MAXN, 0);
  for (int i = N - 1; i >= 0; i--) {
    R[i] = sum(V[i] - 1);
    add(V[i], 1);
  }

  ll res = 0;
  for (int i = 0; i < N; i++) {
    res += 1ll * L[i] * R[i];
  }

  cout << res << endl;

  return 0;
}

Compilation message

Mountains.cpp: In function 'int main()':
Mountains.cpp:38:19: warning: unused variable 'k' [-Wunused-variable]
   for (auto& [k, v] : M) {
                   ^

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 2432 KB Output is correct
2 Correct 239 ms 31352 KB Output is correct
3 Correct 231 ms 31480 KB Output is correct
4 Correct 234 ms 31352 KB Output is correct
5 Correct 234 ms 31424 KB Output is correct
6 Correct 226 ms 31608 KB Output is correct
7 Correct 243 ms 31480 KB Output is correct
8 Correct 240 ms 31480 KB Output is correct
9 Correct 207 ms 22584 KB Output is correct
10 Correct 190 ms 22392 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 7160 KB Output is correct
2 Correct 53 ms 7032 KB Output is correct
3 Correct 58 ms 7160 KB Output is correct
4 Correct 54 ms 7032 KB Output is correct
5 Correct 54 ms 7032 KB Output is correct
6 Correct 58 ms 7032 KB Output is correct
7 Correct 58 ms 7032 KB Output is correct
8 Correct 52 ms 7160 KB Output is correct
9 Correct 54 ms 7160 KB Output is correct
10 Correct 6 ms 2432 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 7160 KB Output is correct
2 Correct 53 ms 7032 KB Output is correct
3 Correct 58 ms 7160 KB Output is correct
4 Correct 54 ms 7032 KB Output is correct
5 Correct 54 ms 7032 KB Output is correct
6 Correct 58 ms 7032 KB Output is correct
7 Correct 58 ms 7032 KB Output is correct
8 Correct 52 ms 7160 KB Output is correct
9 Correct 54 ms 7160 KB Output is correct
10 Correct 6 ms 2432 KB Output is correct
11 Correct 76 ms 7160 KB Output is correct
12 Correct 77 ms 7032 KB Output is correct
13 Correct 80 ms 7112 KB Output is correct
14 Correct 84 ms 7160 KB Output is correct
15 Correct 77 ms 7032 KB Output is correct
16 Correct 77 ms 7032 KB Output is correct
17 Correct 78 ms 7032 KB Output is correct
18 Correct 55 ms 7160 KB Output is correct
19 Correct 54 ms 7032 KB Output is correct
20 Correct 6 ms 2432 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2432 KB Output is correct
2 Correct 6 ms 2432 KB Output is correct
3 Correct 6 ms 2432 KB Output is correct
4 Correct 6 ms 2432 KB Output is correct
5 Correct 6 ms 2432 KB Output is correct
6 Correct 6 ms 2432 KB Output is correct
7 Correct 6 ms 2432 KB Output is correct
8 Correct 6 ms 2432 KB Output is correct
9 Correct 6 ms 2432 KB Output is correct
10 Correct 6 ms 2432 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2432 KB Output is correct
2 Correct 6 ms 2432 KB Output is correct
3 Correct 6 ms 2432 KB Output is correct
4 Correct 6 ms 2432 KB Output is correct
5 Correct 6 ms 2432 KB Output is correct
6 Correct 6 ms 2432 KB Output is correct
7 Correct 6 ms 2432 KB Output is correct
8 Correct 6 ms 2432 KB Output is correct
9 Correct 6 ms 2432 KB Output is correct
10 Correct 6 ms 2432 KB Output is correct
11 Correct 13 ms 3328 KB Output is correct
12 Correct 13 ms 3328 KB Output is correct
13 Correct 13 ms 3328 KB Output is correct
14 Correct 13 ms 3328 KB Output is correct
15 Correct 13 ms 3328 KB Output is correct
16 Correct 13 ms 3328 KB Output is correct
17 Correct 13 ms 3328 KB Output is correct
18 Correct 11 ms 2944 KB Output is correct
19 Correct 9 ms 2560 KB Output is correct
20 Correct 6 ms 2432 KB Output is correct

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 7160 KB Output is correct
2 Correct 53 ms 7032 KB Output is correct
3 Correct 58 ms 7160 KB Output is correct
4 Correct 54 ms 7032 KB Output is correct
5 Correct 54 ms 7032 KB Output is correct
6 Correct 58 ms 7032 KB Output is correct
7 Correct 58 ms 7032 KB Output is correct
8 Correct 52 ms 7160 KB Output is correct
9 Correct 54 ms 7160 KB Output is correct
10 Correct 6 ms 2432 KB Output is correct
11 Correct 76 ms 7160 KB Output is correct
12 Correct 77 ms 7032 KB Output is correct
13 Correct 80 ms 7112 KB Output is correct
14 Correct 84 ms 7160 KB Output is correct
15 Correct 77 ms 7032 KB Output is correct
16 Correct 77 ms 7032 KB Output is correct
17 Correct 78 ms 7032 KB Output is correct
18 Correct 55 ms 7160 KB Output is correct
19 Correct 54 ms 7032 KB Output is correct
20 Correct 6 ms 2432 KB Output is correct
21 Correct 255 ms 13176 KB Output is correct
22 Correct 244 ms 13052 KB Output is correct
23 Correct 233 ms 13048 KB Output is correct
24 Correct 253 ms 13356 KB Output is correct
25 Correct 236 ms 13048 KB Output is correct
26 Correct 235 ms 13048 KB Output is correct
27 Correct 239 ms 13304 KB Output is correct
28 Correct 132 ms 13048 KB Output is correct
29 Correct 137 ms 12992 KB Output is correct
30 Correct 6 ms 2432 KB Output is correct

Subtask #7
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 2432 KB Output is correct
2 Correct 239 ms 31352 KB Output is correct
3 Correct 231 ms 31480 KB Output is correct
4 Correct 234 ms 31352 KB Output is correct
5 Correct 234 ms 31424 KB Output is correct
6 Correct 226 ms 31608 KB Output is correct
7 Correct 243 ms 31480 KB Output is correct
8 Correct 240 ms 31480 KB Output is correct
9 Correct 207 ms 22584 KB Output is correct
10 Correct 190 ms 22392 KB Output is correct
11 Correct 55 ms 7160 KB Output is correct
12 Correct 53 ms 7032 KB Output is correct
13 Correct 58 ms 7160 KB Output is correct
14 Correct 54 ms 7032 KB Output is correct
15 Correct 54 ms 7032 KB Output is correct
16 Correct 58 ms 7032 KB Output is correct
17 Correct 58 ms 7032 KB Output is correct
18 Correct 52 ms 7160 KB Output is correct
19 Correct 54 ms 7160 KB Output is correct
20 Correct 6 ms 2432 KB Output is correct
21 Correct 76 ms 7160 KB Output is correct
22 Correct 77 ms 7032 KB Output is correct
23 Correct 80 ms 7112 KB Output is correct
24 Correct 84 ms 7160 KB Output is correct
25 Correct 77 ms 7032 KB Output is correct
26 Correct 77 ms 7032 KB Output is correct
27 Correct 78 ms 7032 KB Output is correct
28 Correct 55 ms 7160 KB Output is correct
29 Correct 54 ms 7032 KB Output is correct
30 Correct 6 ms 2432 KB Output is correct
31 Correct 6 ms 2432 KB Output is correct
32 Correct 6 ms 2432 KB Output is correct
33 Correct 6 ms 2432 KB Output is correct
34 Correct 6 ms 2432 KB Output is correct
35 Correct 6 ms 2432 KB Output is correct
36 Correct 6 ms 2432 KB Output is correct
37 Correct 6 ms 2432 KB Output is correct
38 Correct 6 ms 2432 KB Output is correct
39 Correct 6 ms 2432 KB Output is correct
40 Correct 6 ms 2432 KB Output is correct
41 Correct 13 ms 3328 KB Output is correct
42 Correct 13 ms 3328 KB Output is correct
43 Correct 13 ms 3328 KB Output is correct
44 Correct 13 ms 3328 KB Output is correct
45 Correct 13 ms 3328 KB Output is correct
46 Correct 13 ms 3328 KB Output is correct
47 Correct 13 ms 3328 KB Output is correct
48 Correct 11 ms 2944 KB Output is correct
49 Correct 9 ms 2560 KB Output is correct
50 Correct 6 ms 2432 KB Output is correct
51 Correct 255 ms 13176 KB Output is correct
52 Correct 244 ms 13052 KB Output is correct
53 Correct 233 ms 13048 KB Output is correct
54 Correct 253 ms 13356 KB Output is correct
55 Correct 236 ms 13048 KB Output is correct
56 Correct 235 ms 13048 KB Output is correct
57 Correct 239 ms 13304 KB Output is correct
58 Correct 132 ms 13048 KB Output is correct
59 Correct 137 ms 12992 KB Output is correct
60 Correct 6 ms 2432 KB Output is correct
61 Correct 474 ms 31452 KB Output is correct
62 Correct 478 ms 31456 KB Output is correct
63 Correct 458 ms 31480 KB Output is correct
64 Correct 493 ms 31624 KB Output is correct
65 Correct 485 ms 31480 KB Output is correct
66 Correct 471 ms 31480 KB Output is correct
67 Correct 487 ms 31480 KB Output is correct
68 Correct 389 ms 22392 KB Output is correct
69 Correct 289 ms 17272 KB Output is correct
70 Correct 6 ms 2432 KB Output is correct