#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define fi first
#define se second
#define ll long long
#define ld long double
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define mpp make_pair
#define ve vector
using namespace std;
using namespace __gnu_pbds;
template<class T> using oset = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;
const ll inf = 1e18; const int iinf = 1e9;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
template <typename T> inline bool chmin(T& a, T b) { return (a > b ? a = b, 1 : 0); }
template <typename T> inline bool chmax(T& a, T b) { return (a < b ? a = b, 1 : 0); }
inline void solve() {
int n, k;
cin >> n >> k;
ve<int> a(n);
for (auto &i : a) cin >> i;
int ans = iinf, L = 0, R = n - 1;
for (int l = 0; l < n; ++l) {
for (int r = l + k - 1; r < n; r += k) {
bool ok = 1;
int d = (r - l + 1) / k;
for (int i = l + d; i <= r; ++i) ok &= (a[i] == a[i - d]);
if (ok && chmin(ans, r - l + 1)) {
L = l, R = r;
}
}
}
if (ans == iinf) return void(cout << -1);
cout << ans << '\n';
for (int i = L; i <= R; ++i) cout << a[i] << " ";
}
signed main() {
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
int q = 1; // cin >> q;
while (q--) solve();
cerr << fixed << setprecision(3) << "Time execution: " << (double)clock() / CLOCKS_PER_SEC << endl;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
212 KB |
Sequence doesn't repeat k times |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
324 KB |
Sequence doesn't repeat k times |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
212 KB |
Sequence doesn't repeat k times |
| 2 |
Halted |
0 ms |
0 KB |
- |
