oj.uz

Submission #223803

# Submission time Handle Problem Language Result Execution time Memory
223803 2020-04-16T13:34:50 Z bortoz Mountains (NOI20_mountains) C++17
24 / 100
 239 ms 12300 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<int> V(N);
  map<int, int> M;
  for (int& i : V) {
    cin >> i;
    M[i] = 0;
  }
  int x = 0;
  for (auto& p : M) {
    p.second = x++;
  }
  for (int& 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;
}

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 2432 KB Output is correct
2 Correct 36 ms 5888 KB Output is correct
3 Correct 37 ms 6016 KB Output is correct
4 Correct 36 ms 5880 KB Output is correct
5 Correct 36 ms 6016 KB Output is correct
6 Correct 36 ms 6016 KB Output is correct
7 Correct 36 ms 5888 KB Output is correct
8 Correct 36 ms 6016 KB Output is correct
9 Correct 36 ms 5888 KB Output is correct
10 Correct 36 ms 5888 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 60 ms 6552 KB Output is correct
2 Correct 54 ms 6520 KB Output is correct
3 Correct 56 ms 6520 KB Output is correct
4 Correct 58 ms 6520 KB Output is correct
5 Correct 55 ms 6520 KB Output is correct
6 Correct 58 ms 6520 KB Output is correct
7 Correct 55 ms 6520 KB Output is correct
8 Correct 52 ms 6520 KB Output is correct
9 Correct 52 ms 6520 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 60 ms 6552 KB Output is correct
2 Correct 54 ms 6520 KB Output is correct
3 Correct 56 ms 6520 KB Output is correct
4 Correct 58 ms 6520 KB Output is correct
5 Correct 55 ms 6520 KB Output is correct
6 Correct 58 ms 6520 KB Output is correct
7 Correct 55 ms 6520 KB Output is correct
8 Correct 52 ms 6520 KB Output is correct
9 Correct 52 ms 6520 KB Output is correct
10 Correct 6 ms 2432 KB Output is correct
11 Correct 78 ms 6776 KB Output is correct
12 Correct 81 ms 6776 KB Output is correct
13 Correct 78 ms 6796 KB Output is correct
14 Correct 77 ms 6776 KB Output is correct
15 Correct 80 ms 6776 KB Output is correct
16 Correct 76 ms 6776 KB Output is correct
17 Correct 80 ms 6776 KB Output is correct
18 Correct 53 ms 6780 KB Output is correct
19 Correct 53 ms 6752 KB Output is correct
20 Correct 6 ms 2432 KB Output is correct

Subtask #4
0 / 36.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 2432 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 28.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 2432 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 60 ms 6552 KB Output is correct
2 Correct 54 ms 6520 KB Output is correct
3 Correct 56 ms 6520 KB Output is correct
4 Correct 58 ms 6520 KB Output is correct
5 Correct 55 ms 6520 KB Output is correct
6 Correct 58 ms 6520 KB Output is correct
7 Correct 55 ms 6520 KB Output is correct
8 Correct 52 ms 6520 KB Output is correct
9 Correct 52 ms 6520 KB Output is correct
10 Correct 6 ms 2432 KB Output is correct
11 Correct 78 ms 6776 KB Output is correct
12 Correct 81 ms 6776 KB Output is correct
13 Correct 78 ms 6796 KB Output is correct
14 Correct 77 ms 6776 KB Output is correct
15 Correct 80 ms 6776 KB Output is correct
16 Correct 76 ms 6776 KB Output is correct
17 Correct 80 ms 6776 KB Output is correct
18 Correct 53 ms 6780 KB Output is correct
19 Correct 53 ms 6752 KB Output is correct
20 Correct 6 ms 2432 KB Output is correct
21 Correct 223 ms 12188 KB Output is correct
22 Correct 239 ms 12300 KB Output is correct
23 Correct 216 ms 12156 KB Output is correct
24 Correct 222 ms 12152 KB Output is correct
25 Correct 238 ms 12152 KB Output is correct
26 Correct 223 ms 12168 KB Output is correct
27 Correct 216 ms 12128 KB Output is correct
28 Correct 126 ms 12280 KB Output is correct
29 Correct 125 ms 12152 KB Output is correct
30 Correct 5 ms 2432 KB Output is correct

Subtask #7
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 2432 KB Output is correct
2 Correct 36 ms 5888 KB Output is correct
3 Correct 37 ms 6016 KB Output is correct
4 Correct 36 ms 5880 KB Output is correct
5 Correct 36 ms 6016 KB Output is correct
6 Correct 36 ms 6016 KB Output is correct
7 Correct 36 ms 5888 KB Output is correct
8 Correct 36 ms 6016 KB Output is correct
9 Correct 36 ms 5888 KB Output is correct
10 Correct 36 ms 5888 KB Output is correct
11 Correct 60 ms 6552 KB Output is correct
12 Correct 54 ms 6520 KB Output is correct
13 Correct 56 ms 6520 KB Output is correct
14 Correct 58 ms 6520 KB Output is correct
15 Correct 55 ms 6520 KB Output is correct
16 Correct 58 ms 6520 KB Output is correct
17 Correct 55 ms 6520 KB Output is correct
18 Correct 52 ms 6520 KB Output is correct
19 Correct 52 ms 6520 KB Output is correct
20 Correct 6 ms 2432 KB Output is correct
21 Correct 78 ms 6776 KB Output is correct
22 Correct 81 ms 6776 KB Output is correct
23 Correct 78 ms 6796 KB Output is correct
24 Correct 77 ms 6776 KB Output is correct
25 Correct 80 ms 6776 KB Output is correct
26 Correct 76 ms 6776 KB Output is correct
27 Correct 80 ms 6776 KB Output is correct
28 Correct 53 ms 6780 KB Output is correct
29 Correct 53 ms 6752 KB Output is correct
30 Correct 6 ms 2432 KB Output is correct
31 Incorrect 5 ms 2432 KB Output isn't correct
32 Halted 0 ms 0 KB -