/*
5:05開始,也不算是virtual,因為我已經知道幾個人的分數了,也在去年資芽時聽過p4的題敘並想過。
所以就只是計時練習,應該會寫到19:05,然後等家長買晚餐回來吃後再把剩下的兩小時用一用,衝到div2就打div2
目標日本選訓!!
*/
//喔,就只是雙指針而已
#include <bits/stdc++.h>
using namespace std;
string s;
int n, k, a[810000] = {0};
int wow[810000][3];
int main () {
ios_base::sync_with_stdio(false); cin.tie(0);
cin >> n >> k;
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 z = 0; z < 3; z++) {
for (int i = 1, j = 0, cnt = 0; i <= n; i++) {
while (j + 1 <= n and cnt < k) {
j++;
if (a[j] == z) cnt++;
}
if (cnt == k) wow[i][z] = j + 1;
else {
wow[i][z] = 209999;
if (z == 2) wow[i][z] = n * 114 + 514000;
}
if (a[i] == z) cnt--;
}
}
wow[0][2] = n * 114 + 514000;
for (int i = n + 1; i <= 209999; i++)wow[i][0] = wow[i][1] = 209999, wow[i][2] = n * 114 + 514000;
int ans = INT_MAX;
for (int i = 1; i <= n; i++) {
// cout << i << ' ' << wow[i][0] << ' ' << wow[i][1] << ' ' << wow[i][2] << '\n';
// cout << i << ' ' << wow[wow[wow[i][0]][1]][2] << '\n';
ans = min(ans, wow[wow[wow[i][0]][1]][2] - i - k * 3 );
}
if (ans > n) ans = -1;
cout << ans << '\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
6748 KB |
Output is correct |
2 |
Correct |
2 ms |
6748 KB |
Output is correct |
3 |
Correct |
1 ms |
6748 KB |
Output is correct |
4 |
Correct |
1 ms |
6788 KB |
Output is correct |
5 |
Correct |
2 ms |
6748 KB |
Output is correct |
6 |
Correct |
2 ms |
6748 KB |
Output is correct |
7 |
Correct |
2 ms |
6748 KB |
Output is correct |
8 |
Correct |
2 ms |
6748 KB |
Output is correct |
9 |
Correct |
1 ms |
6748 KB |
Output is correct |
10 |
Correct |
2 ms |
6748 KB |
Output is correct |
11 |
Correct |
1 ms |
6748 KB |
Output is correct |
12 |
Correct |
1 ms |
6748 KB |
Output is correct |
13 |
Correct |
1 ms |
6748 KB |
Output is correct |
14 |
Correct |
2 ms |
6748 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
6748 KB |
Output is correct |
2 |
Correct |
2 ms |
6748 KB |
Output is correct |
3 |
Correct |
1 ms |
6748 KB |
Output is correct |
4 |
Correct |
1 ms |
6788 KB |
Output is correct |
5 |
Correct |
2 ms |
6748 KB |
Output is correct |
6 |
Correct |
2 ms |
6748 KB |
Output is correct |
7 |
Correct |
2 ms |
6748 KB |
Output is correct |
8 |
Correct |
2 ms |
6748 KB |
Output is correct |
9 |
Correct |
1 ms |
6748 KB |
Output is correct |
10 |
Correct |
2 ms |
6748 KB |
Output is correct |
11 |
Correct |
1 ms |
6748 KB |
Output is correct |
12 |
Correct |
1 ms |
6748 KB |
Output is correct |
13 |
Correct |
1 ms |
6748 KB |
Output is correct |
14 |
Correct |
2 ms |
6748 KB |
Output is correct |
15 |
Correct |
2 ms |
6748 KB |
Output is correct |
16 |
Correct |
1 ms |
6748 KB |
Output is correct |
17 |
Correct |
2 ms |
6744 KB |
Output is correct |
18 |
Correct |
2 ms |
6744 KB |
Output is correct |
19 |
Correct |
2 ms |
6748 KB |
Output is correct |
20 |
Correct |
2 ms |
6748 KB |
Output is correct |
21 |
Correct |
2 ms |
6748 KB |
Output is correct |
22 |
Correct |
2 ms |
6748 KB |
Output is correct |
23 |
Correct |
1 ms |
6748 KB |
Output is correct |
24 |
Correct |
2 ms |
6796 KB |
Output is correct |
25 |
Correct |
2 ms |
6748 KB |
Output is correct |
26 |
Correct |
2 ms |
6748 KB |
Output is correct |
27 |
Correct |
2 ms |
6896 KB |
Output is correct |
28 |
Correct |
1 ms |
6748 KB |
Output is correct |
29 |
Correct |
1 ms |
6792 KB |
Output is correct |
30 |
Correct |
2 ms |
6748 KB |
Output is correct |
31 |
Correct |
2 ms |
6748 KB |
Output is correct |
32 |
Correct |
2 ms |
6800 KB |
Output is correct |
33 |
Correct |
2 ms |
6748 KB |
Output is correct |
34 |
Correct |
2 ms |
6748 KB |
Output is correct |
35 |
Correct |
2 ms |
6748 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
6748 KB |
Output is correct |
2 |
Correct |
2 ms |
6748 KB |
Output is correct |
3 |
Correct |
1 ms |
6748 KB |
Output is correct |
4 |
Correct |
1 ms |
6788 KB |
Output is correct |
5 |
Correct |
2 ms |
6748 KB |
Output is correct |
6 |
Correct |
2 ms |
6748 KB |
Output is correct |
7 |
Correct |
2 ms |
6748 KB |
Output is correct |
8 |
Correct |
2 ms |
6748 KB |
Output is correct |
9 |
Correct |
1 ms |
6748 KB |
Output is correct |
10 |
Correct |
2 ms |
6748 KB |
Output is correct |
11 |
Correct |
1 ms |
6748 KB |
Output is correct |
12 |
Correct |
1 ms |
6748 KB |
Output is correct |
13 |
Correct |
1 ms |
6748 KB |
Output is correct |
14 |
Correct |
2 ms |
6748 KB |
Output is correct |
15 |
Correct |
2 ms |
6748 KB |
Output is correct |
16 |
Correct |
1 ms |
6748 KB |
Output is correct |
17 |
Correct |
2 ms |
6744 KB |
Output is correct |
18 |
Correct |
2 ms |
6744 KB |
Output is correct |
19 |
Correct |
2 ms |
6748 KB |
Output is correct |
20 |
Correct |
2 ms |
6748 KB |
Output is correct |
21 |
Correct |
2 ms |
6748 KB |
Output is correct |
22 |
Correct |
2 ms |
6748 KB |
Output is correct |
23 |
Correct |
1 ms |
6748 KB |
Output is correct |
24 |
Correct |
2 ms |
6796 KB |
Output is correct |
25 |
Correct |
2 ms |
6748 KB |
Output is correct |
26 |
Correct |
2 ms |
6748 KB |
Output is correct |
27 |
Correct |
2 ms |
6896 KB |
Output is correct |
28 |
Correct |
1 ms |
6748 KB |
Output is correct |
29 |
Correct |
1 ms |
6792 KB |
Output is correct |
30 |
Correct |
2 ms |
6748 KB |
Output is correct |
31 |
Correct |
2 ms |
6748 KB |
Output is correct |
32 |
Correct |
2 ms |
6800 KB |
Output is correct |
33 |
Correct |
2 ms |
6748 KB |
Output is correct |
34 |
Correct |
2 ms |
6748 KB |
Output is correct |
35 |
Correct |
2 ms |
6748 KB |
Output is correct |
36 |
Correct |
7 ms |
6888 KB |
Output is correct |
37 |
Correct |
7 ms |
6884 KB |
Output is correct |
38 |
Correct |
7 ms |
7044 KB |
Output is correct |
39 |
Correct |
8 ms |
6884 KB |
Output is correct |
40 |
Correct |
9 ms |
6884 KB |
Output is correct |
41 |
Correct |
8 ms |
6888 KB |
Output is correct |
42 |
Correct |
8 ms |
6888 KB |
Output is correct |
43 |
Correct |
5 ms |
7032 KB |
Output is correct |
44 |
Correct |
6 ms |
6888 KB |
Output is correct |
45 |
Correct |
7 ms |
6888 KB |
Output is correct |
46 |
Correct |
8 ms |
6888 KB |
Output is correct |
47 |
Correct |
7 ms |
6888 KB |
Output is correct |
48 |
Correct |
7 ms |
6888 KB |
Output is correct |
49 |
Correct |
5 ms |
6888 KB |
Output is correct |
50 |
Correct |
7 ms |
6888 KB |
Output is correct |
51 |
Correct |
8 ms |
6888 KB |
Output is correct |
52 |
Correct |
4 ms |
6888 KB |
Output is correct |
53 |
Correct |
5 ms |
6884 KB |
Output is correct |
54 |
Correct |
4 ms |
6884 KB |
Output is correct |
55 |
Correct |
4 ms |
7140 KB |
Output is correct |
56 |
Correct |
5 ms |
6884 KB |
Output is correct |