oj.uz

답안 #287208

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
287208 2020-08-31T13:44:19 Z Haunted_Cpp Arranging Shoes (IOI19_shoes) C++17
50 / 100
 73 ms 28664 KB 
#include "shoes.h"
#include <bits/stdc++.h>

using namespace std;

const int MAX_N = 1e5 + 5;

vector<vector<int>> L(MAX_N), R(MAX_N);
bitset<MAX_N> solved;

class FenwickTree {
private:
  vector<int> bit;
  const int L;
public:
  FenwickTree(int n) : L(n + 5) {
    bit.clear();
    bit.resize(L);
  }
  void update(int idx, int delta) {
    for (; idx < L; idx += idx & (- idx)) {
      bit[idx] += delta;
    }
  }
  void range_update(int lo, int hi, int delta) {
    ++lo; ++hi;
    update(lo, +delta);
    update(hi + 1, -delta);
  }
  int query(int idx) {
    ++idx;
    int res = 0;
    for (; idx > 0; idx -= idx & (- idx)) {
      res += bit[idx];
    }
    return res;
  }
};

long long count_swaps(vector<int> s) {
  const int n = s.size();
  for (int i = 0; i < n; i++) {
    const int cur = abs(s[i]);
    if (s[i] < 0) {
      L[cur].emplace_back(i);
    } else {
      R[cur].emplace_back(i);
    }
  }
  for (int i = 0; i < MAX_N; i++) {
    reverse(L[i].begin(), L[i].end());
    reverse(R[i].begin(), R[i].end());
  }
  FenwickTree fen(n);
  auto get_idx = [&](int idx) {
    return idx + fen.query(idx);
  };
  long long res = 0;
  for (int i = 0; i < n; i++) {
    if (solved[i]) continue;
    const int cur = abs(s[i]);
    int lo = i;
    int hi;
    if (s[i] > 0) {
      R[cur].pop_back();
      hi = L[cur].back();
      L[cur].pop_back();
    } else {
      L[cur].pop_back();
      hi = R[cur].back();
      R[cur].pop_back();
    }
    solved[lo] = solved[hi] = 1;
    res += (s[i] > 0) + get_idx(hi) - get_idx(lo) - 1;
    fen.range_update(lo, hi, + 1);
  }
	return res;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 5 ms 5120 KB Output is correct
21 Correct 4 ms 4992 KB Output is correct
22 Correct 4 ms 4992 KB Output is correct
23 Correct 4 ms 4992 KB Output is correct
24 Correct 4 ms 4992 KB Output is correct
25 Correct 4 ms 4992 KB Output is correct
26 Correct 4 ms 4992 KB Output is correct
27 Correct 4 ms 4992 KB Output is correct
28 Correct 4 ms 4992 KB Output is correct
29 Correct 4 ms 4992 KB Output is correct
30 Correct 4 ms 4992 KB Output is correct
31 Correct 4 ms 4992 KB Output is correct
32 Correct 4 ms 4992 KB Output is correct
33 Correct 4 ms 4992 KB Output is correct
34 Correct 4 ms 4992 KB Output is correct
35 Correct 4 ms 4992 KB Output is correct
36 Correct 4 ms 4992 KB Output is correct

Subtask #3
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 5120 KB Output is correct
19 Correct 4 ms 5120 KB Output is correct
20 Correct 7 ms 5504 KB Output is correct
21 Correct 8 ms 5504 KB Output is correct
22 Runtime error 52 ms 17816 KB Execution killed with signal 11
23 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 5084 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Runtime error 73 ms 28664 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 5 ms 5120 KB Output is correct
21 Correct 4 ms 4992 KB Output is correct
22 Correct 4 ms 4992 KB Output is correct
23 Correct 4 ms 4992 KB Output is correct
24 Correct 4 ms 4992 KB Output is correct
25 Correct 4 ms 4992 KB Output is correct
26 Correct 4 ms 4992 KB Output is correct
27 Correct 4 ms 4992 KB Output is correct
28 Correct 4 ms 4992 KB Output is correct
29 Correct 4 ms 4992 KB Output is correct
30 Correct 4 ms 4992 KB Output is correct
31 Correct 4 ms 4992 KB Output is correct
32 Correct 4 ms 4992 KB Output is correct
33 Correct 4 ms 4992 KB Output is correct
34 Correct 4 ms 4992 KB Output is correct
35 Correct 4 ms 4992 KB Output is correct
36 Correct 4 ms 4992 KB Output is correct
37 Correct 4 ms 4992 KB Output is correct
38 Correct 4 ms 4992 KB Output is correct
39 Correct 4 ms 4992 KB Output is correct
40 Correct 4 ms 4992 KB Output is correct
41 Correct 5 ms 5120 KB Output is correct
42 Correct 4 ms 5120 KB Output is correct
43 Correct 4 ms 5120 KB Output is correct
44 Correct 5 ms 5120 KB Output is correct
45 Correct 5 ms 5120 KB Output is correct
46 Correct 4 ms 5120 KB Output is correct
47 Correct 4 ms 5120 KB Output is correct
48 Correct 4 ms 5120 KB Output is correct
49 Correct 5 ms 5120 KB Output is correct
50 Correct 4 ms 5120 KB Output is correct
51 Correct 4 ms 5120 KB Output is correct
52 Correct 4 ms 5120 KB Output is correct

Subtask #6
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 5 ms 5120 KB Output is correct
21 Correct 4 ms 4992 KB Output is correct
22 Correct 4 ms 4992 KB Output is correct
23 Correct 4 ms 4992 KB Output is correct
24 Correct 4 ms 4992 KB Output is correct
25 Correct 4 ms 4992 KB Output is correct
26 Correct 4 ms 4992 KB Output is correct
27 Correct 4 ms 4992 KB Output is correct
28 Correct 4 ms 4992 KB Output is correct
29 Correct 4 ms 4992 KB Output is correct
30 Correct 4 ms 4992 KB Output is correct
31 Correct 4 ms 4992 KB Output is correct
32 Correct 4 ms 4992 KB Output is correct
33 Correct 4 ms 4992 KB Output is correct
34 Correct 4 ms 4992 KB Output is correct
35 Correct 4 ms 4992 KB Output is correct
36 Correct 4 ms 4992 KB Output is correct
37 Correct 4 ms 4992 KB Output is correct
38 Correct 4 ms 4992 KB Output is correct
39 Correct 4 ms 4992 KB Output is correct
40 Correct 4 ms 4992 KB Output is correct
41 Correct 4 ms 4992 KB Output is correct
42 Correct 4 ms 4992 KB Output is correct
43 Correct 4 ms 4992 KB Output is correct
44 Correct 4 ms 4992 KB Output is correct
45 Correct 4 ms 4992 KB Output is correct
46 Correct 4 ms 4992 KB Output is correct
47 Correct 4 ms 4992 KB Output is correct
48 Correct 4 ms 4992 KB Output is correct
49 Correct 4 ms 4992 KB Output is correct
50 Correct 4 ms 4992 KB Output is correct
51 Correct 4 ms 4992 KB Output is correct
52 Correct 4 ms 5120 KB Output is correct
53 Correct 4 ms 5120 KB Output is correct
54 Correct 7 ms 5504 KB Output is correct
55 Correct 8 ms 5504 KB Output is correct
56 Runtime error 52 ms 17816 KB Execution killed with signal 11
57 Halted 0 ms 0 KB -