| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 201734 |
2020-02-11T21:04:31 Z |
silxikys |
JJOOII 2 (JOI20_ho_t2) |
C++14 |
|
58 ms |
43016 KB |
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int maxn = 2e5+5, maxk = 18;
int n, K;
string s;
int jJ[maxk][maxn], jO[maxk][maxn], jI[maxk][maxn];
int walk(int i, int ar[][maxn]) {
for (int k = maxk-1; k >= 0; k--) {
if (K & (1<<k)) {
i = ar[k][i];
}
if (i == -1) return -1;
}
return i;
}
int main() {
ios_base::sync_with_stdio(false); cin.tie(NULL);
cin >> n >> K >> s;
memset(jJ,-1,sizeof jJ);
memset(jO,-1,sizeof jO);
memset(jI,-1,sizeof jI);
for (int i = n-1; i >= 0; i--) {
jJ[0][i] = s[i] == 'J' ? i+1 : jJ[0][i+1];
for (int k = 1; k < maxk; k++) {
jJ[k][i] = jJ[k-1][i] == -1 ? -1 : jJ[k-1][jJ[k-1][i]];
}
}
for (int i = n-1; i >= 0; i--) {
jO[0][i] = s[i] == 'O' ? i+1 : jO[0][i+1];
for (int k = 1; k < maxk; k++) {
jO[k][i] = jO[k-1][i] == -1 ? -1 : jO[k-1][jO[k-1][i]];
}
}
for (int i = n-1; i >= 0; i--) {
jI[0][i] = s[i] == 'I' ? i+1 : jI[0][i+1];
for (int k = 1; k < maxk; k++) {
jI[k][i] = jI[k-1][i] == -1 ? -1 : jI[k-1][jI[k-1][i]];
}
}
int ans = 2e9;
for (int i = 0; i < n; i++) {
int r = i;
r = walk(r,jJ);
if (r == -1) continue;
r = walk(r,jO);
if (r == -1) continue;
r = walk(r,jI);
if (r == -1) continue;
int tr = (r-i)-3*K;
ans = min(ans,tr);
}
cout << (ans < 2e9 ? ans : -1) << '\n';
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 2 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 3 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 4 |
Correct |
25 ms |
42616 KB |
Output is correct |
| 5 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 6 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 7 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 8 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 9 |
Correct |
27 ms |
42620 KB |
Output is correct |
| 10 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 11 |
Correct |
26 ms |
42620 KB |
Output is correct |
| 12 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 13 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 14 |
Correct |
26 ms |
42616 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 2 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 3 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 4 |
Correct |
25 ms |
42616 KB |
Output is correct |
| 5 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 6 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 7 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 8 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 9 |
Correct |
27 ms |
42620 KB |
Output is correct |
| 10 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 11 |
Correct |
26 ms |
42620 KB |
Output is correct |
| 12 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 13 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 14 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 15 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 16 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 17 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 18 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 19 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 20 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 21 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 22 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 23 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 24 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 25 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 26 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 27 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 28 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 29 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 30 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 31 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 32 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 33 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 34 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 35 |
Correct |
26 ms |
42616 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 2 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 3 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 4 |
Correct |
25 ms |
42616 KB |
Output is correct |
| 5 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 6 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 7 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 8 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 9 |
Correct |
27 ms |
42620 KB |
Output is correct |
| 10 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 11 |
Correct |
26 ms |
42620 KB |
Output is correct |
| 12 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 13 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 14 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 15 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 16 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 17 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 18 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 19 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 20 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 21 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 22 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 23 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 24 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 25 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 26 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 27 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 28 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 29 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 30 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 31 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 32 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 33 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 34 |
Correct |
27 ms |
42616 KB |
Output is correct |
| 35 |
Correct |
26 ms |
42616 KB |
Output is correct |
| 36 |
Correct |
55 ms |
42884 KB |
Output is correct |
| 37 |
Correct |
54 ms |
42888 KB |
Output is correct |
| 38 |
Correct |
55 ms |
42884 KB |
Output is correct |
| 39 |
Correct |
54 ms |
42884 KB |
Output is correct |
| 40 |
Correct |
58 ms |
42884 KB |
Output is correct |
| 41 |
Correct |
54 ms |
42884 KB |
Output is correct |
| 42 |
Correct |
56 ms |
42884 KB |
Output is correct |
| 43 |
Correct |
42 ms |
42872 KB |
Output is correct |
| 44 |
Correct |
49 ms |
42888 KB |
Output is correct |
| 45 |
Correct |
51 ms |
42884 KB |
Output is correct |
| 46 |
Correct |
58 ms |
43016 KB |
Output is correct |
| 47 |
Correct |
52 ms |
43012 KB |
Output is correct |
| 48 |
Correct |
52 ms |
42884 KB |
Output is correct |
| 49 |
Correct |
43 ms |
42884 KB |
Output is correct |
| 50 |
Correct |
52 ms |
42884 KB |
Output is correct |
| 51 |
Correct |
53 ms |
42888 KB |
Output is correct |
| 52 |
Correct |
47 ms |
42884 KB |
Output is correct |
| 53 |
Correct |
50 ms |
42884 KB |
Output is correct |
| 54 |
Correct |
47 ms |
42884 KB |
Output is correct |
| 55 |
Correct |
44 ms |
42884 KB |
Output is correct |
| 56 |
Correct |
43 ms |
42884 KB |
Output is correct |
