Submission #421483

#	Time	Username	Problem	Language	Result	Execution time	Memory
421483		Drew_	MalnaRISC (COI21_malnarisc)	C++17	67.63 / 100	3 ms	460 KiB

malnarisc

#include <iostream>
#include <vector>
#include <bitset>
#include <random>
#include <algorithm>
using namespace std;
 
#define pb push_back
#define ii pair<int, int>
#define f1 first
#define s2 second
 
bitset<169> used;
// mt19937 RNG(69);
int main()
{
	ios :: sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
 
	int n;
	cin >> n;
 
	vector<ii> rem[100];
	const auto gen = [&](const auto &self, int l, int r, int h) -> void
	{
		if (l >= r)
			return;

		int mid = (l + r) >> 1;
		self(self, l, mid, h+1);
		self(self, mid+1, r, h+1);

		for (int i = l; i <= mid; ++i)
			for (int j = mid+1; j <= r; ++j)
				rem[h].pb({i, j});
		return;
	};
	gen(gen, 1, n, 0);

	// for (int i = 1; i <= n; ++i)
	// 	for (int j = i+1; j <= n; ++j)
	// 		rem.pb({i, j});
 
	vector<vector<ii>> res;
	for (int i = 0; i < 100; ++i)
	{
		while (!rem[i].empty())
		{
			//shuffle(rem.begin(), rem.end(), RNG);

			used.reset();
			vector<ii> out, nxt;
			for (auto [a, b] : rem[i])
			{
				if (!used[a] && !used[b])
					out.pb({a, b}), used[a] = used[b] = true;
				else nxt.pb({a, b});
			}
	 
			res.pb(out);
			rem[i] = nxt;
		}
	}
	
	cout << res.size() << '\n';
	for (auto &out : res)
	{
		for (int i = 0; i < (int)out.size(); ++i)
			cout << "CMPSWP R" << out[i].f1 << " R" << out[i].s2 << " \n"[i+1 == (int)out.size()];
	}
 
	return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 7.6666666667 / 10
• Subtask 3: 8.4444444444 / 10
• Subtask 4: 7.6666666667 / 10
• Subtask 5: 6.4567901235 / 10
• Subtask 6: 7.213592233 / 10
• Subtask 7: 3.9824561404 / 10
• Subtask 8: 4.803030303 / 10
• Subtask 9: 5.4429530201 / 10
• Subtask 10: 5.9518072289 / 10