제출 #1319632

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1319632		bearrbearr	Table Tennis (info1cup20_tabletennis)	C++20	0 / 100	3091 ms	2076 KiB

tabletennis

#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("O3,unroll-loops")
#define int long long
#define ii pair<int,int>
#define fir first
#define sec second
#define pb push_back
const int maxn=2e5;

int a[maxn+1],n,k;
vector<int>ans;

bool bisa(int sum){
    ans.clear();
    int r=n+k;
    for(int l=1;l<=n+k && l<=r;l++){
        while(a[l]+a[r]>sum)r--;
        if(l>=r)break;

        if(a[l]+a[r]==sum){
            ans.push_back(l); ans.push_back(r);
        }
    }

    if(ans.size()>=n)return true;
    return false;
}

mt19937 rnd(232323);

signed main(){
    cin>>n>>k;
    for(int q=1;q<=n+k;q++){
        cin>>a[q];
    }

    uniform_int_distribution<int>uid(1,n+k-1);
    while(true){
        int satu=uid(rnd);
        uniform_int_distribution<int>uid2(satu+1,n+k);
        int dua=uid2(rnd);

        if(bisa(a[satu]+a[dua])){
            break;
        }
    }
    sort(ans.begin(),ans.end());
    for(auto x : ans){
        cout<<x<<' ';
    }
    cout<<endl;
}

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