#include <bits/stdc++.h>
using namespace std;
int main() {
cin.tie(0)->sync_with_stdio(0);
int n, k;
cin >> n >> k;
vector<int> a(n);
for(auto&x:a) cin >> x;
sort(a.begin(), a.end());
vector<int> b(n);
for (int i = n - k; i < n; i++) {
b[i - n + k] = a[i];
}
for (int i = 0; i < n - k; i++) {
b[i + k] = a[i];
}
int falsecnt = 0;
for (int i = 0; i < n; i++) {
if (b[i] > falsecnt) {
falsecnt++;
}
}
if(falsecnt != k) cout << "-1\n";
else {
copy(b.begin(), b.end(), ostream_iterator<int>(cout, " "));
cout << '\n';
}
}
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