Submission #365720

#	Time	Username	Problem	Language	Result	Execution time	Memory
365720		tengiz05	Table Tennis (info1cup20_tabletennis)	C++17	11 / 100	23 ms	2944 KiB

tabletennis

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define FASTIO ios_base::sync_with_stdio(false); cin.tie(NULL);
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define pii pair<int, int>
#define ff first
#define ss second
#define PI acos(-1)
#define ld long double
template<class T> bool chmin(T& a, const T& b) {return a>b? a=b, true:false;}
template<class T> bool chmax(T& a, const T& b) {return a<b? a=b, true:false;}
const int mod = 1e9+7, N = 2e5+5;
int msb(int val){return sizeof(int)*8-__builtin_clzll(val)-1;}
int n, m, k;
int a[N];
bool check(vector<int> &v){
	int n = v.size();
	int t = a[0] + a[n-1];
	for(int l=0,r=n-1;l<r;l++,r--){
		if(a[l] + a[r] != t)return false;
	}return true;
}
void solve(int test_case){
	int i, j;
	cin >> n >> k;
	m = n+k;
	for(i=1;i<=m;i++){
		cin >> a[i];
	}
	sort(a+1,a+m+1);
	assert(k == 1);
	if(k == 1){
		bool ok = true;
		int t = (a[1] + a[m-1]);
		for(int l=1,r=m-1;l<r;l++,r--){
			if(a[l] + a[r] != t)ok = false;
		}
		if(ok){
			for(i=1;i<=m-1;i++)cout << a[i] << ' ' ;
			cout << '\n';
			return;
		}
		ok = true;
		t = (a[2] + a[m]);
		for(int l=2,r=m;l<r;l++,r--){
			if(a[l] + a[r] != t)ok = false;
		}
		
		if(ok){
			for(i=2;i<=m;i++)cout << a[i] << ' ' ;
			cout << '\n';
			return;
		}
		t = a[1] + a[m];
		for(int l=1,r=m;l<r;i++){
			if(a[l] + a[r] != t){
				vector<int> v;
				for(i=1;i<=m;i++){
					if(i==l)continue;
					v.pb(a[i]);
					if(check(v)){
						for(auto x : v)cout << x << ' ' ;
						cout << '\n';
					}
				}
				v.clear();
				for(i=1;i<=m;i++){
					if(i==r)continue;
					v.pb(a[i]);
					if(check(v)){
						for(auto x : v)cout << x << ' ' ;
						cout << '\n';
					}
				}
				assert(false);
			}
		}
	}
	return;
}
/*

4 1
2 4 8 6 10

*/
signed main(){
	FASTIO;
//~ #define MULTITEST 1
#if MULTITEST
	int _T;
	cin >> _T;
	for(int T_CASE = 1; T_CASE <= _T; T_CASE++)
		solve(T_CASE);
#else
	solve(1);
#endif
	return 0;
}

Compilation message (stderr)

tabletennis.cpp: In function 'void solve(long long int)':
tabletennis.cpp:26:9: warning: unused variable 'j' [-Wunused-variable]
   26 |  int i, j;
      |         ^

• Subtask 1: 11 / 11
• Subtask 2: 0 / 9
• Subtask 3: 0 / 14
• Subtask 4: 0 / 15
• Subtask 5: 0 / 9
• Subtask 6: 0 / 14
• Subtask 7: 0 / 15
• Subtask 8: 0 / 13