Submission #1027437

#	Time	Username	Problem	Language	Result	Execution time	Memory
1027437		blacktulip	Table Tennis (info1cup20_tabletennis)	C++17	100 / 100	58 ms	5376 KiB

tabletennis

#include <bits/stdc++.h>

using namespace std;

typedef long long lo; 

#define fi first
#define se second
#define endl "\n"
#define pb push_back
#define int long long
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)
#define _ << " " <<

const lo inf = 1000000000;
const lo li = 500005;
const lo mod = 1000000007;

int n,m,a[li],k,flag,t;
int cev;
string s;
vector<int> v;

inline void yaz(int l,int r,int sum){
	//~ cout<<l _ r _ sum<<endl;
	while(l<=r){
		if(l==r)break;
		if(a[l]+a[r]==sum){v.pb(a[l]),v.pb(a[r]);l++;r--;continue;}
		if(a[l]+a[r]<sum)l++;
		else r--;
	}
	sort(v.begin(),v.end());
	for(auto go:v)cout<<go<<" ";
	exit(0);
}

int32_t main(void){
	fio();
	cin>>n>>k;
	for(int i=1;i<=n+k;i++){
		cin>>a[i];
	}
	sort(a+1,a+n+k+1);
	for(int i=1;i<=k+1;i++){
		for(int j=n-1+i;j<=n+k;j++){
			int sum=a[i]+a[j];
			int hak=k-(i-1+n+k-j);
			int bas=i;
			int son=j;
			while(bas<=son){
				if(bas==son){hak--;break;}
				if(a[bas]+a[son]==sum){bas++;son--;continue;}
				hak--;
				if(hak<0)break;
				if(a[bas]+a[son]<sum)bas++;
				else son--;
			}
			if(hak<0)continue;
			//~ cout<<i _ j _ sum _ a[i] _ a[j]<<endl;
			yaz(i,j,sum);
		}
	}
	return 0;
}

• 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