Submission #753094

#	Time	Username	Problem	Language	Result	Execution time	Memory
753094		DJeniUp	Table Tennis (info1cup20_tabletennis)	C++17	87 / 100	3072 ms	4428 KiB

tabletennis

#include "bits/stdc++.h"
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("O3")

using namespace std;

typedef int ll;
typedef unsigned long long ull;
typedef pair<ll,ll>pairll;
typedef pair<ll,ull>pairull;
typedef pair<ll,pairll>pair3l;
typedef long double ld;
typedef pair<ld,ll>pairld;

#define fr first
#define sc second
#define pb push_back
#define endl '\n'
#define N 100007
//#define MOD 998244353
#define INF 100000000000007
#define eps 0.0000000001

ll n,k,d[2*N],s[2*N];

ll S(ll x){
    ll res=0;
    for(int i=1;i<=n+k;i++){
        s[i]=0;
    }
    ll l=1;
    ll r=n+k;
    while(l<r){
        if(d[l]+d[r]<x)l++;
        else if(d[l]+d[r]>x)r--;
        else{
            res+=2;
            s[l]=1;
            s[r]=1;
            l++;
            r--;
        }
        if(res==n)return 1;
    }
    return 0;
}

int main(){
    
    cin>>n>>k;
    for(int i=1;i<=n+k;i++){
        cin>>d[i];
    }
    sort(d+1,d+1+n+k);
    ll fl=0;
    for(int i=1;i<=n+k;i++){
        for(int j=n+k;j>i;j--){
            if(j-i+1>=n){
                if(S(d[i]+d[j])==1){
                    fl=1;
                    break;
                }
            }else break;
        }
        if(fl==1)break;
    }
    //if(fl==0)exit(1);
    ll r=n;
    for(int i=1;i<=n+k;i++){
        if(s[i]==1){
            cout<<d[i];
            r--;
            if(r!=0)cout<<" ";
        }
        
    }
    //if(r!=0)exit(1);
    //cout<<endl;

    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: 0 / 13