Submission #524830

#	Time	Username	Problem	Language	Result	Execution time	Memory
524830		boykut	Table Tennis (info1cup20_tabletennis)	C++14	49 / 100	3107 ms	758764 KiB

tabletennis

#include <bits/stdc++.h>

using namespace std;

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);

	int n, k;
	cin >> n >> k;
	vector<int> a(n + k);
	map<int, int> cnt;
	for (int i = 0; i < n + k; i++) {
		cin >> a[i];
	}
	for (int i = 0; i < n + k; i++) {
		for (int j = i + 1; j < n + k; j++) {
			cnt[a[i] + a[j]]++;
		}
	}

	int mx = -1, sum = -1;
	for (auto it : cnt) {
		if (it.second > mx)
			mx = it.second, sum = it.first;
	}

	assert(sum != -1);

	set<int> st(a.begin(), a.end());
	deque<int> ans;

	for (int i = 0; i < n + k; i++) {
		if (st.count(sum - a[i])) {
			ans.push_back(a[i]);
			ans.push_back(sum - a[i]);
			st.erase(sum - a[i]);
			st.erase(a[i]);
		}
	}
	sort(ans.begin(), ans.end());
	assert(ans.size() >= n);
	while (ans.size() > n) {
		ans.pop_back();
		ans.pop_front();
	}
	for (int v : ans)
		cout << v << ' ';

	return 0;
}

Compilation message (stderr)

In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from tabletennis.cpp:1:
tabletennis.cpp: In function 'int main()':
tabletennis.cpp:42:20: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   42 |  assert(ans.size() >= n);
      |         ~~~~~~~~~~~^~~~
tabletennis.cpp:43:20: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   43 |  while (ans.size() > n) {
      |         ~~~~~~~~~~~^~~

• Subtask 1: 11 / 11
• Subtask 2: 0 / 9
• Subtask 3: 0 / 14
• Subtask 4: 15 / 15
• Subtask 5: 9 / 9
• Subtask 6: 14 / 14
• Subtask 7: 0 / 15
• Subtask 8: 0 / 13