Submission #377598

#	Time	Username	Problem	Language	Result	Execution time	Memory
377598		keta_tsimakuridze	Table Tennis (info1cup20_tabletennis)	C++14	100 / 100	522 ms	46044 KiB

tabletennis

#include<bits/stdc++.h>
#define f first
#define int long long
#define s second
using namespace std;
const int N=2e5+5,mod=1e9+7;
int t,a[N],n,k;
vector<int>v,Ans,ans;
map<int,int>fix;
string s;
main(){
	cin>>n>>k;
	n+=k;
	for(int i=1;i<=n;i++){
		cin>>a[i];
	}
	Ans.resize(n);
	if(n>=4*k) 
	for(int i=1;i<=2*k;i++){
		for(int j=n;j>=n-2*k+1;j--){
			fix[a[i]+a[j]]++;
			if(fix[a[i]+a[j]]==k) v.push_back(a[i]+a[j]);
		}
	}
	else for(int i=0;i<=k;i++){
		for(int j=n;j>=n-k+i;j--){
			v.push_back(a[i+1]+a[j]);
		}
	}
	for(int i=0;i<v.size();i++){
		int sum = v[i];
		ans.clear();
		int l=1,r=n;
		while(l<r) {
			if(a[l]+a[r]==sum){
				ans.push_back(a[l]);
				ans.push_back(a[r]);
				l++;
				r--;
			}
			else if(a[l]+a[r]<sum) l++;
			else r--; 
		}
		if(ans.size()>=n-k){
			
			Ans=ans;
		} 
	}
	sort(Ans.begin(),Ans.end());
	for(int i=0;i<(n-k)/2;i++){
	cout<<Ans[i]<<" ";
	}
	
	for(int i=(int)Ans.size()-(n-k)/2;i<=Ans.size()-1;i++){
		cout<<Ans[i]<<" ";
	}
}

Compilation message (stderr)

tabletennis.cpp:11:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 | main(){
      |      ^
tabletennis.cpp: In function 'int main()':
tabletennis.cpp:30:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |  for(int i=0;i<v.size();i++){
      |              ~^~~~~~~~~
tabletennis.cpp:44:16: 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]
   44 |   if(ans.size()>=n-k){
      |      ~~~~~~~~~~^~~~~
tabletennis.cpp:54:37: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |  for(int i=(int)Ans.size()-(n-k)/2;i<=Ans.size()-1;i++){
      |                                    ~^~~~~~~~~~~~~~

• 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: 15 / 15
• Subtask 8: 13 / 13