답안 #230633

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
230633	2020-05-10T16:33:30 Z	AlexLuchianov	JJOOII 2 (JOI20_ho_t2)	C++14	100 / 100	29 ms	1916 KB

ho_t2

#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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

답안 #230633

Compilation message

Subtask #1 1.0 / 1.0

Subtask #2 12.0 / 12.0

Subtask #3 87.0 / 87.0

Subtask #1
1.0 / 1.0

Subtask #2
12.0 / 12.0

Subtask #3
87.0 / 87.0