답안 #562534

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
562534 2022-05-14T14:34:49 Z dattranxxx JJOOII 2 (JOI20_ho_t2) C++11
100 / 100
32 ms 2868 KB
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
void file() {
	const string FILE_NAME = "FILE_NAME";
	freopen((FILE_NAME + ".inp").c_str(), "r", stdin);
	freopen((FILE_NAME + ".out").c_str(), "w", stdout);
}
const int N = 2e5 + 5;
int a[N], J[N], O[N], I[N];
int n, K;
int check(int l, int r) {
	/* 
	doan (l, r] thoa man <=> ton tai i, j, k thoa man
	l < i < j < r
	J[i] >= K + J[l]
	O[j] >= K + O[i]
	I[r] >= K + I[j]
	*/
	if (r - l < K * 3) return 0;
	int i = lower_bound(J + l + 1, J + n, K + J[l]) - J;
	if (i >= r) return 0;
	int j = lower_bound(O + i + 1, O + n, K + O[i]) - O;
	if (j >= r) return 0;
	return I[r] >= K + I[j];
}
int main() {
	cin.tie(0)->sync_with_stdio(0); cout.tie(0);
	cin >> n >> K;
	char c;
	for (int i = 1; i <= n; ++i) 
		cin >> c,
		J[i] = J[i-1] + (c == 'J'),
		O[i] = O[i-1] + (c == 'O'),
		I[i] = I[i-1] + (c == 'I');
	
	int res = -1;
	for (int l = 0, r = 1; l < n; ++l) {
		// (l, r]
		while (r <= n && !check(l, r)) r++;
		if (r == n + 1) break;
		res = res == -1 ? r - l - K * 3 : min(res, r - l - K * 3);
	}
	cout << res;
	return 0;
}

Compilation message

ho_t2.cpp: In function 'void file()':
ho_t2.cpp:6:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    6 |  freopen((FILE_NAME + ".inp").c_str(), "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ho_t2.cpp:7:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |  freopen((FILE_NAME + ".out").c_str(), "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 324 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 324 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 324 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 328 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 324 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 324 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 324 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 328 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 324 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 27 ms 2644 KB Output is correct
37 Correct 27 ms 2840 KB Output is correct
38 Correct 27 ms 2772 KB Output is correct
39 Correct 29 ms 2772 KB Output is correct
40 Correct 14 ms 2772 KB Output is correct
41 Correct 24 ms 2852 KB Output is correct
42 Correct 32 ms 2804 KB Output is correct
43 Correct 8 ms 1920 KB Output is correct
44 Correct 8 ms 2208 KB Output is correct
45 Correct 10 ms 2848 KB Output is correct
46 Correct 9 ms 2772 KB Output is correct
47 Correct 10 ms 2808 KB Output is correct
48 Correct 11 ms 2772 KB Output is correct
49 Correct 7 ms 1992 KB Output is correct
50 Correct 11 ms 2868 KB Output is correct
51 Correct 12 ms 2772 KB Output is correct
52 Correct 6 ms 2772 KB Output is correct
53 Correct 6 ms 2772 KB Output is correct
54 Correct 17 ms 2800 KB Output is correct
55 Correct 9 ms 2772 KB Output is correct
56 Correct 5 ms 2800 KB Output is correct