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Submission #495311

# Submission time Handle Problem Language Result Execution time Memory
495311 2021-12-18T10:54:38 Z 600Mihnea Monochrome Points (JOI20_monochrome) C++17
25 / 100
 2000 ms 336 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = 400000 + 7;
int n;
string s;


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

  cin >> n >> s;
  assert((int) s.size() == 2 * n);

  function<int(vector<int>, vector<int>)> compute = [&] (vector<int> l, vector<int> r) {
    assert((int) l.size() == n);
    assert((int) r.size() == n);
    for (int i = 0; i < n; i++) {
      if (l[i] > r[i]) {
        swap(l[i], r[i]);
      }
    }
    int sol = 0;
    for (int i = 0; i < n; i++) {
      for (int j = 0; j <= n; j++) {
        if (l[i] < l[j] && l[j] < r[i] && r[i] < r[j]) {
          sol++;
        }
      }
    }
    return sol;
  };

  vector<int> a, b;
  for (int i = 0; i < 2 * n; i++) {
    if (s[i] != s[0]) {
      a.push_back(i);
    } else {
      b.push_back(i);
    }
  }


  int sol = compute(a, b);
  for (int shift = 1; shift < n; shift++) {
    vector<int> newB;
    for (int i = 1; i < n; i++) {
      newB.push_back(b[i]);
    }
    newB.push_back(b[0]);
    b = newB;
    sol = max(sol, compute(a, b));
  }
  cout << sol << "\n";
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 316 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 0 ms 208 KB Output is correct
12 Correct 0 ms 316 KB Output is correct
13 Correct 0 ms 208 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 316 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 0 ms 208 KB Output is correct
12 Correct 0 ms 316 KB Output is correct
13 Correct 0 ms 208 KB Output is correct
14 Correct 28 ms 308 KB Output is correct
15 Correct 32 ms 312 KB Output is correct
16 Correct 30 ms 208 KB Output is correct
17 Correct 38 ms 308 KB Output is correct
18 Correct 21 ms 208 KB Output is correct
19 Correct 22 ms 208 KB Output is correct
20 Correct 23 ms 324 KB Output is correct
21 Correct 19 ms 336 KB Output is correct
22 Correct 26 ms 320 KB Output is correct
23 Correct 9 ms 208 KB Output is correct
24 Correct 19 ms 324 KB Output is correct
25 Correct 24 ms 324 KB Output is correct
26 Correct 23 ms 328 KB Output is correct
27 Correct 28 ms 328 KB Output is correct
28 Correct 29 ms 316 KB Output is correct
29 Correct 20 ms 324 KB Output is correct
30 Correct 19 ms 208 KB Output is correct
31 Correct 29 ms 324 KB Output is correct
32 Correct 26 ms 320 KB Output is correct
33 Correct 29 ms 312 KB Output is correct

Subtask #3
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 316 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 0 ms 208 KB Output is correct
12 Correct 0 ms 316 KB Output is correct
13 Correct 0 ms 208 KB Output is correct
14 Correct 28 ms 308 KB Output is correct
15 Correct 32 ms 312 KB Output is correct
16 Correct 30 ms 208 KB Output is correct
17 Correct 38 ms 308 KB Output is correct
18 Correct 21 ms 208 KB Output is correct
19 Correct 22 ms 208 KB Output is correct
20 Correct 23 ms 324 KB Output is correct
21 Correct 19 ms 336 KB Output is correct
22 Correct 26 ms 320 KB Output is correct
23 Correct 9 ms 208 KB Output is correct
24 Correct 19 ms 324 KB Output is correct
25 Correct 24 ms 324 KB Output is correct
26 Correct 23 ms 328 KB Output is correct
27 Correct 28 ms 328 KB Output is correct
28 Correct 29 ms 316 KB Output is correct
29 Correct 20 ms 324 KB Output is correct
30 Correct 19 ms 208 KB Output is correct
31 Correct 29 ms 324 KB Output is correct
32 Correct 26 ms 320 KB Output is correct
33 Correct 29 ms 312 KB Output is correct
34 Execution timed out 2062 ms 312 KB Time limit exceeded
35 Halted 0 ms 0 KB -

Subtask #4
0.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 316 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 0 ms 208 KB Output is correct
12 Correct 0 ms 316 KB Output is correct
13 Correct 0 ms 208 KB Output is correct
14 Correct 28 ms 308 KB Output is correct
15 Correct 32 ms 312 KB Output is correct
16 Correct 30 ms 208 KB Output is correct
17 Correct 38 ms 308 KB Output is correct
18 Correct 21 ms 208 KB Output is correct
19 Correct 22 ms 208 KB Output is correct
20 Correct 23 ms 324 KB Output is correct
21 Correct 19 ms 336 KB Output is correct
22 Correct 26 ms 320 KB Output is correct
23 Correct 9 ms 208 KB Output is correct
24 Correct 19 ms 324 KB Output is correct
25 Correct 24 ms 324 KB Output is correct
26 Correct 23 ms 328 KB Output is correct
27 Correct 28 ms 328 KB Output is correct
28 Correct 29 ms 316 KB Output is correct
29 Correct 20 ms 324 KB Output is correct
30 Correct 19 ms 208 KB Output is correct
31 Correct 29 ms 324 KB Output is correct
32 Correct 26 ms 320 KB Output is correct
33 Correct 29 ms 312 KB Output is correct
34 Execution timed out 2062 ms 312 KB Time limit exceeded
35 Halted 0 ms 0 KB -