# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
499885 | jesus_coconut | Table Tennis (info1cup20_tabletennis) | C++17 | 3082 ms | 3716 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#define pb push_back
#define all(a) begin(a), end(a)
using namespace std;
int n, k;
vector<int> v;
vector<int> dif;
void load() {
cin >> n >> k;
v.resize(n + k);
for (auto &it : v) cin >> it;
}
vector<int> ans;
map<pair<int, int>, int> mp;
bool solve(int sl, int sr) {
int l = sl, r = sr;
if (l >= r) return false;
ans.clear();
ans.pb(v[l]);
ans.pb(v[r]);
while (l < r) {
if (mp.count({l, r})) {
mp[{sl, sr}] = mp[{l, r}] + ans.size();
if (mp[{sl, sr}] < n) return false;
}
int cl = dif[l+1];
int cr = dif[r];
int pl = l, pr = r;
while (cl != cr && l < r) {
if (cl < cr) {
l++;
cl += dif[l+1];
} else {
r--;
cr += dif[r];
}
}
++l; --r;
if (l >= r) break;
if (cl == cr) {
ans.pb(v[l]);
ans.pb(v[r]);
}
if (ans.size() == n) return true;
}
mp[{sl, sr}] = ans.size();
return false;
}
void solve() {
for (int i = 0; i <= k; ++i) {
for (int j = 0; j <= k - i; ++j) {
if (solve(i, n + k - 1 - j)) {
sort(all(ans));
for (auto &it: ans) cout << it << ' ';
return;
};
}
}
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
load();
sort(all(v));
dif.resize(size(v));
adjacent_difference(all(v), begin(dif));
solve();
return 0;
}
Compilation message (stderr)
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