Submission #1159087

#	Time	Username	Problem	Language	Result	Execution time	Memory
1159087		crai0n	Spring cleaning (CEOI20_cleaning)	C++20	0 / 100	26 ms	8776 KiB

cleaning

/*
	Bismillahir rahmanir rahim
	Allahu akbar
	Alhamdulillah
	Subhanallah
	Rabbi a’inni wa-la tu’in ‘alayya,
	wa-nsurni wa-la tansur ‘alayya,
	wa-mkur-li wa-la tamkur alayya,
	wa-hdini wa-yassir-il-huda ilayya,
	wa-nsurni ‘ala man bagha ‘alayya
	Ya Hayyu Ya Qayyum,
	birahmatika astaghitsu,
	aslih li sha'ni kullahu,
	wa la takilni ila nafsi tarfata ‘aini
*/

#include <bits/stdc++.h>
#define ll long long
#define int long long
#define pb(x) push_back(x)
#define sor(x) sort(x.begin(), x.end())
#define rsor(x) sort(x.rbegin(), x.rend())
#define yes cout << "YES\n";
#define no cout << "NO\n";

#pragma pack(1)

using namespace std;
const int N = 2e5 + 55;
const int MOD = 1e9 + 7;
const bool T = false;

ll bp(ll a, ll n)
{
	if(n == 0)
	{
		return 1;
	}
	if (n & 1)
	{
		return bp(a, n - 1) * a % MOD;
	}
	else
	{
		ll temp = bp(a, n / 2);
		return temp * temp % MOD;
	}
}

vector<ll> g[N];

void hippopotomonstrosesquipedaliophobia()
{
	ll n, q;
	cin >> n >> q;
	bool f1, f2;
	f1 = f2 = 1;
	for (int i = 1; i < n; i++)
	{
		ll x, y;
		cin >> x >> y;
		g[x].pb(y);
		g[y].pb(x);
		if(x != y + 1 and y != x + 1)
		{
			f1 = 0;
		}
		if(x != 1 and y != 1)
		{
			f2 = 0;
		}
	}
	
	if(f1 == 1)
	{
		for (int i = 1; i <= q; i++)
		{
			ll d;
			cin >> d;
			ll x = 2;
			ll dist = n - 1;
			vector<ll> vc;
			for (int j = 0; j < d; j++)
			{
				ll u;
				cin >> u;
				x++;
				vc.pb(u);
			}
			if(x % 2 == 1)
			{
				cout << -1 << '\n';
			}
			else
			{
				sor(vc);
				for (int i = 0; i < vc.size(); i+=2)
				{
					dist += abs(vc[i] - vc[i + 1]);
				}
			}
		}
		return;
	}
	if(f2 == 1)
	{
		for (int i = 0; i < q; i++)
		{
			ll d;
			ll as = n - 1;
			cin >> d;
			for (int j = 0; j < d; j++)
			{
				ll x;
				cin >> x;
				if(x == 1)
				{
					as++;
				}
			}
			if(as % 2 == 1)
			{
				cout << -1 << '\n';
			}
			else
			{
				cout << (as / 2) << '\n';
			}
		}
		return;
	}
	
	for (int i = 1; i <= q; i++)
	{
		ll d;
		cin >> d;
		for (int j = 0; j < d; j++)
		{
			ll x;
			cin >> x;
			
		}
	}
}

signed main(void)
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int time = 1;
	if (T)
	{
		cin >> time;
	}
	while (time--)
	{
		hippopotomonstrosesquipedaliophobia();
	}
	return 0;
}

• Subtask 1: 0 / 0
• Subtask 2: 0 / 9
• Subtask 3: 0 / 9
• Subtask 4: 0 / 16
• Subtask 5: 0 / 19
• Subtask 6: 0 / 17
• Subtask 7: 0 / 30