Submission #735068

#	Time	Username	Problem	Language	Result	Execution time	Memory
735068		NintsiChkhaidze	Table Tennis (info1cup20_tabletennis)	C++17	72 / 100	3089 ms	23032 KiB

tabletennis

#include <bits/stdc++.h>
#define pb push_back
#define f first
#define s second
#define int long long
using namespace std;

const int N = 2e5+5,inf = 1e9;
int a[N],n,k;
map <int,int> mp;
vector <int> v;
void check(int sum){
	mp.clear();
	for (int i= 1; i <= n+k;i++)
		mp[a[i]]++;
	
	v.clear();
	for (int i = 1; i <= n + k; i++){
		if (!mp[a[i]]) continue;
		mp[a[i]]--;
		if (mp[sum - a[i]] > 0) {
			v.pb(a[i]);
			v.pb(sum - a[i]);
			mp[sum - a[i]]--;
			continue;
		}
		mp[a[i]]++;
	}
	
	if (v.size() == n){
		sort(v.begin(),v.end());
		for (int x: v) cout<<x<<" ";
		cout<<endl;
		exit(0);
	}
	
}
signed main (){
	ios_base::sync_with_stdio(0),cin.tie(NULL),cout.tie(NULL);
	
	cin>>n>>k;
	
	for (int i = 1; i <= n+k;i++)
		cin>>a[i];
	
	for (int i = 1; i <= k+1; i++){
		int c=0;
		for (int j = n + k; j > i; j--){
			++c;
			if (c > k+1) break;
			check(a[i] + a[j]);
		}
	}
}
/*
4 7
1 3 4 5 6 8 9 100 200 431 1234
*/

Compilation message (stderr)

tabletennis.cpp: In function 'void check(long long int)':
tabletennis.cpp:30:15: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   30 |  if (v.size() == n){
      |      ~~~~~~~~~^~~~

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