답안 #288777

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
288777 2020-09-01T21:26:40 Z luciocf JJOOII 2 (JOI20_ho_t2) C++14
100 / 100
128 ms 2048 KB
#include <bits/stdc++.h>

using namespace std;

const int inf = 1e9+10;

int n, k;
vector<int> pos[3];

int get_next(int ind, int p)
{
	auto it = lower_bound(pos[ind].begin(), pos[ind].end(), p);
	if (it == pos[ind].end()) return -1;

	int x = (int)(it-pos[ind].begin());

	if (x+k-1 >= pos[ind].size()) return -1;

	return pos[ind][x+k-1];
}

bool ok(int i)
{
	if (i+k-1 >= pos[0].size()) return false;

	int p = pos[0][i+k-1];

	p = get_next(1, p+1);
	if (p == -1) return false;

	p = get_next(2, p+1);
	if (p == -1) return false;

	return true;
}

int main(void)
{
	string s;

	cin >> n >> k >> s;

	int ans = inf;

	for (int i = 0; i < n; i++)
	{
		if (s[i] == 'J') pos[0].push_back(i);
		else if (s[i] == 'O') pos[1].push_back(i);
		else pos[2].push_back(i);

		if (s[i] != 'I' || pos[0].size() < k) continue;

		int ini = 0, fim = pos[0].size()-1, opt = -1;

		while (ini <= fim)
		{
			int mid = (ini+fim)>>1;

			if (ok(mid)) opt = mid, ini = mid+1;
			else fim = mid-1;
		}

		if (opt != -1)
			ans = min(ans, i-pos[0][opt]+1-3*k);
	}

	if (ans != inf) cout << ans << "\n";
	else cout << "-1\n";
}

Compilation message

ho_t2.cpp: In function 'int get_next(int, int)':
ho_t2.cpp:17:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |  if (x+k-1 >= pos[ind].size()) return -1;
      |      ~~~~~~^~~~~~~~~~~~~~~~~~
ho_t2.cpp: In function 'bool ok(int)':
ho_t2.cpp:24:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |  if (i+k-1 >= pos[0].size()) return false;
      |      ~~~~~~^~~~~~~~~~~~~~~~
ho_t2.cpp: In function 'int main()':
ho_t2.cpp:51:36: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   51 |   if (s[i] != 'I' || pos[0].size() < k) continue;
      |                      ~~~~~~~~~~~~~~^~~
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 1 ms 384 KB Output is correct
31 Correct 0 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 1 ms 384 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 2 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 1 ms 384 KB Output is correct
31 Correct 0 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 1 ms 384 KB Output is correct
36 Correct 111 ms 1532 KB Output is correct
37 Correct 121 ms 1860 KB Output is correct
38 Correct 123 ms 2032 KB Output is correct
39 Correct 117 ms 2048 KB Output is correct
40 Correct 93 ms 2016 KB Output is correct
41 Correct 110 ms 2032 KB Output is correct
42 Correct 128 ms 1920 KB Output is correct
43 Correct 43 ms 1280 KB Output is correct
44 Correct 54 ms 1520 KB Output is correct
45 Correct 75 ms 2048 KB Output is correct
46 Correct 73 ms 1920 KB Output is correct
47 Correct 74 ms 2048 KB Output is correct
48 Correct 79 ms 2048 KB Output is correct
49 Correct 45 ms 1284 KB Output is correct
50 Correct 73 ms 1920 KB Output is correct
51 Correct 72 ms 1920 KB Output is correct
52 Correct 18 ms 1612 KB Output is correct
53 Correct 22 ms 1868 KB Output is correct
54 Correct 66 ms 2048 KB Output is correct
55 Correct 52 ms 2048 KB Output is correct
56 Correct 18 ms 2048 KB Output is correct