Submission #379714

#	Time	Username	Problem	Language	Result	Execution time	Memory
379714		YJU	Table Tennis (info1cup20_tabletennis)	C++14	38 / 100	3089 ms	11628 KiB

tabletennis

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
const ll N=15e4+400+1;

ll u[N],n,k,vis[N];
vector<ll> lis;

bool ck(ll m,ll flag){
	multiset<ll> ms;
	vector<ll> ret;
	for(int i=0;i<n;i++)ms.insert(u[i]);
	while(!ms.empty()){
		if(ret.size()==n-k)break;
        ll x=*ms.begin();ms.erase(ms.begin());
        if(ms.find(m-x)!=ms.end()){
			ret.push_back(x);ret.push_back(m-x);
			ms.erase(ms.find(m-x));
        }
	}
	if(flag&&(ret.size()==n-k)){
		sort(ret.begin(),ret.end());
		for(int i=0;i<ret.size();i++)
			cout<<ret[i]<<" \n"[i==ret.size()-1];
		return 0;
	}else{
		return (ret.size()==n-k);
	}
}

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	cin>>n>>k;
	n+=k;
	for(int i=0;i<n;i++)cin>>u[i];
	for(int i=0;i<k;i++){
		for(int j=n-1;j>=n-k-1&&j>i;j--){
            if(i+n-1-j>k)break;
            lis.push_back(u[i]+u[j]);
		}
	}
	sort(lis.begin(),lis.end());
	lis.erase(unique(lis.begin(),lis.end()),lis.end());
	for(auto i:lis){
		//cout<<i<<"\n";
		ll tmp=ck(i,0);
		if(tmp){
			ck(i,1);
			return 0;
		}
		//cout<<ck(i,0)<<"\n";
	}
	return 0;
}

Compilation message (stderr)

tabletennis.cpp: In function 'bool ck(ll, ll)':
tabletennis.cpp:15:16: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   15 |   if(ret.size()==n-k)break;
      |      ~~~~~~~~~~^~~~~
tabletennis.cpp:22:22: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   22 |  if(flag&&(ret.size()==n-k)){
      |            ~~~~~~~~~~^~~~~
tabletennis.cpp:24:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |   for(int i=0;i<ret.size();i++)
      |               ~^~~~~~~~~~~
tabletennis.cpp:25:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |    cout<<ret[i]<<" \n"[i==ret.size()-1];
      |                        ~^~~~~~~~~~~~~~
tabletennis.cpp:28:21: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   28 |   return (ret.size()==n-k);
      |           ~~~~~~~~~~^~~~~

• Subtask 1: 0 / 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