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Submission #201348

# Submission time Handle Problem Language Result Execution time Memory
201348 2020-02-10T09:38:14 Z Mamnoon_Siam JJOOII 2 (JOI20_ho_t2) C++17
100 / 100
 27 ms 5944 KB 
#include  <bits/stdc++.h>
using namespace std;

using ll = long long;
using ii = pair<int, int>;

const int maxn = 2e5 + 5;

int n, k;
int cnt[3][maxn];
int to[3][maxn];
int a[maxn];

int main(int argc, char const *argv[])
{
#ifdef LOCAL
	freopen("in", "r", stdin);
#endif
	cin >> n >> k;
	{
		string s; cin >> s;
		for(int i = 1; i <= n; i++) {
			if(s[i-1] == 'J') a[i] = 0;
			if(s[i-1] == 'O') a[i] = 1;
			if(s[i-1] == 'I') a[i] = 2;
		}
	}
	for(int i = 1; i <= n; i++) {
		cnt[a[i]][i]++;
		cnt[0][i] += cnt[0][i-1];
		cnt[1][i] += cnt[1][i-1];
		cnt[2][i] += cnt[2][i-1];
	}
	if(cnt[0][n] < k or cnt[1][n] < k or cnt[2][n] < k) {
		cout << "-1" << endl;
		return 0;
	}
	memset(to, -1, sizeof to);
	for(int x = 0; x < 3; x++) {
		int *cc = cnt[x];
		int r = 0;
		for(int i = 0; i < n; i++) {
			while(r < n and cc[r] - cc[i] < k) {
				r++;
			}
			if(cc[r] - cc[i] == k) {
				to[x][i] = r;
			}
		}
	}
	int ans = INT_MAX;
	for(int i = 0; i < n; i++) {
		int now = i, flag = 1;
		for(int x = 0; x < 3; x++) {
			if(to[x][now] == -1) {
				flag = 0;
				break;
			}
			now = to[x][now];
		}
		if(flag) {
			ans = min(ans, now - i);
		}
	}
	if(ans == INT_MAX) {
		cout << "-1" << endl;
	} else {
		cout << ans - 3*k << endl;
	}
	return 0;
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2680 KB Output is correct
2 Correct 6 ms 2680 KB Output is correct
3 Correct 6 ms 2680 KB Output is correct
4 Correct 6 ms 2680 KB Output is correct
5 Correct 6 ms 2680 KB Output is correct
6 Correct 6 ms 2680 KB Output is correct
7 Correct 6 ms 2680 KB Output is correct
8 Correct 6 ms 2680 KB Output is correct
9 Correct 6 ms 2680 KB Output is correct
10 Correct 7 ms 2680 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 7 ms 2680 KB Output is correct
13 Correct 6 ms 2680 KB Output is correct
14 Correct 7 ms 2680 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2680 KB Output is correct
2 Correct 6 ms 2680 KB Output is correct
3 Correct 6 ms 2680 KB Output is correct
4 Correct 6 ms 2680 KB Output is correct
5 Correct 6 ms 2680 KB Output is correct
6 Correct 6 ms 2680 KB Output is correct
7 Correct 6 ms 2680 KB Output is correct
8 Correct 6 ms 2680 KB Output is correct
9 Correct 6 ms 2680 KB Output is correct
10 Correct 7 ms 2680 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 7 ms 2680 KB Output is correct
13 Correct 6 ms 2680 KB Output is correct
14 Correct 7 ms 2680 KB Output is correct
15 Correct 6 ms 2680 KB Output is correct
16 Correct 6 ms 2680 KB Output is correct
17 Correct 6 ms 2680 KB Output is correct
18 Correct 6 ms 2680 KB Output is correct
19 Correct 7 ms 2856 KB Output is correct
20 Correct 6 ms 2680 KB Output is correct
21 Correct 6 ms 2680 KB Output is correct
22 Correct 6 ms 2680 KB Output is correct
23 Correct 6 ms 2680 KB Output is correct
24 Correct 6 ms 2680 KB Output is correct
25 Correct 6 ms 2680 KB Output is correct
26 Correct 6 ms 2808 KB Output is correct
27 Correct 6 ms 2808 KB Output is correct
28 Correct 6 ms 2680 KB Output is correct
29 Correct 6 ms 2808 KB Output is correct
30 Correct 6 ms 2680 KB Output is correct
31 Correct 6 ms 2680 KB Output is correct
32 Correct 6 ms 2680 KB Output is correct
33 Correct 6 ms 2680 KB Output is correct
34 Correct 6 ms 2680 KB Output is correct
35 Correct 6 ms 2680 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2680 KB Output is correct
2 Correct 6 ms 2680 KB Output is correct
3 Correct 6 ms 2680 KB Output is correct
4 Correct 6 ms 2680 KB Output is correct
5 Correct 6 ms 2680 KB Output is correct
6 Correct 6 ms 2680 KB Output is correct
7 Correct 6 ms 2680 KB Output is correct
8 Correct 6 ms 2680 KB Output is correct
9 Correct 6 ms 2680 KB Output is correct
10 Correct 7 ms 2680 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 7 ms 2680 KB Output is correct
13 Correct 6 ms 2680 KB Output is correct
14 Correct 7 ms 2680 KB Output is correct
15 Correct 6 ms 2680 KB Output is correct
16 Correct 6 ms 2680 KB Output is correct
17 Correct 6 ms 2680 KB Output is correct
18 Correct 6 ms 2680 KB Output is correct
19 Correct 7 ms 2856 KB Output is correct
20 Correct 6 ms 2680 KB Output is correct
21 Correct 6 ms 2680 KB Output is correct
22 Correct 6 ms 2680 KB Output is correct
23 Correct 6 ms 2680 KB Output is correct
24 Correct 6 ms 2680 KB Output is correct
25 Correct 6 ms 2680 KB Output is correct
26 Correct 6 ms 2808 KB Output is correct
27 Correct 6 ms 2808 KB Output is correct
28 Correct 6 ms 2680 KB Output is correct
29 Correct 6 ms 2808 KB Output is correct
30 Correct 6 ms 2680 KB Output is correct
31 Correct 6 ms 2680 KB Output is correct
32 Correct 6 ms 2680 KB Output is correct
33 Correct 6 ms 2680 KB Output is correct
34 Correct 6 ms 2680 KB Output is correct
35 Correct 6 ms 2680 KB Output is correct
36 Correct 23 ms 5700 KB Output is correct
37 Correct 25 ms 5944 KB Output is correct
38 Correct 24 ms 5944 KB Output is correct
39 Correct 27 ms 5944 KB Output is correct
40 Correct 25 ms 5944 KB Output is correct
41 Correct 26 ms 5944 KB Output is correct
42 Correct 26 ms 5944 KB Output is correct
43 Correct 19 ms 4736 KB Output is correct
44 Correct 21 ms 5220 KB Output is correct
45 Correct 25 ms 5944 KB Output is correct
46 Correct 25 ms 5944 KB Output is correct
47 Correct 25 ms 5944 KB Output is correct
48 Correct 26 ms 5944 KB Output is correct
49 Correct 18 ms 4856 KB Output is correct
50 Correct 25 ms 5944 KB Output is correct
51 Correct 25 ms 5940 KB Output is correct
52 Correct 22 ms 5824 KB Output is correct
53 Correct 23 ms 5940 KB Output is correct
54 Correct 21 ms 5944 KB Output is correct
55 Correct 22 ms 5940 KB Output is correct
56 Correct 21 ms 5944 KB Output is correct