oj.uz

Submission #230633

# Submission time Handle Problem Language Result Execution time Memory
230633 2020-05-10T16:33:30 Z AlexLuchianov JJOOII 2 (JOI20_ho_t2) C++14
100 / 100
 29 ms 1916 KB 
#include <iostream>
#include <vector>
#include <algorithm>
#include <cassert>
#include <cmath>
#include <set>

using namespace std;

using ll = long long;

int const nmax = 200000;

char s[5 + nmax];
vector<int> sets[3];

int lowerthan(vector<int> &v, int target){
  int x = 0;
  for(int jump = (1 << 20); 0 < jump; jump /= 2)
    if(x + jump < v.size() && v[x + jump] <= target)
      x += jump;
  return x;
}

int eval(int n, int k, int stop){
  int init = stop;

  for(int h = 2; 0 <= h; h--){
    int pos = lowerthan(sets[h], stop);
    if(pos < k)
      return nmax * 2;
    stop = sets[h][pos - k + 1] - 1;
  }
  return n - 3 * k - (n - init) - stop;
}

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

  int n, k;
  cin >> n >> k;
  sets[0].push_back(0);
  sets[1].push_back(0);
  sets[2].push_back(0);

  for(int i = 1; i <= n; i++) {
    char ch;
    cin >> ch;
    if(ch == 'J')
      sets[0].push_back(i);
    else if(ch == 'O')
      sets[1].push_back(i);
    else
      sets[2].push_back(i);
  }

  int result = nmax * 2;
  for(int i = 1; i < sets[2].size(); i++)
    result = min(result, eval(n, k, sets[2][i]));

  if(result < nmax * 2)
    cout << result;
  else
    cout << -1;
  return 0;
}

Compilation message

ho_t2.cpp: In function 'int lowerthan(std::vector<int>&, int)':
ho_t2.cpp:20:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(x + jump < v.size() && v[x + jump] <= target)
        ~~~~~~~~~^~~~~~~~~~
ho_t2.cpp: In function 'int main()':
ho_t2.cpp:60:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 1; i < sets[2].size(); i++)
                  ~~^~~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

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

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 5 ms 384 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 5 ms 384 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 5 ms 384 KB Output is correct
34 Correct 5 ms 384 KB Output is correct
35 Correct 5 ms 384 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 5 ms 384 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 5 ms 384 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 5 ms 384 KB Output is correct
34 Correct 5 ms 384 KB Output is correct
35 Correct 5 ms 384 KB Output is correct
36 Correct 27 ms 1400 KB Output is correct
37 Correct 29 ms 1656 KB Output is correct
38 Correct 28 ms 1768 KB Output is correct
39 Correct 26 ms 1784 KB Output is correct
40 Correct 23 ms 1752 KB Output is correct
41 Correct 26 ms 1784 KB Output is correct
42 Correct 29 ms 1656 KB Output is correct
43 Correct 15 ms 1272 KB Output is correct
44 Correct 17 ms 1384 KB Output is correct
45 Correct 22 ms 1784 KB Output is correct
46 Correct 23 ms 1656 KB Output is correct
47 Correct 22 ms 1912 KB Output is correct
48 Correct 22 ms 1656 KB Output is correct
49 Correct 15 ms 1152 KB Output is correct
50 Correct 22 ms 1752 KB Output is correct
51 Correct 21 ms 1784 KB Output is correct
52 Correct 14 ms 1464 KB Output is correct
53 Correct 16 ms 1648 KB Output is correct
54 Correct 19 ms 1788 KB Output is correct
55 Correct 14 ms 1788 KB Output is correct
56 Correct 12 ms 1916 KB Output is correct