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Submission #602977

# Submission time Handle Problem Language Result Execution time Memory
602977 2022-07-23T13:37:38 Z tutis Permutation (APIO22_perm) C++17
91.3333 / 100
 40 ms 376 KB 
#include "perm.h"
using namespace std;
#include <iostream>
#include <random>
#include <functional>
using ll = long long;
std::vector<int> construct_permutation(long long k)
{
	vector<int>ret = { -1};
	vector<ll>dp = {1};
	k--;
	while (k != 0)
	{
		vector<int>ret_ = ret;
		vector<ll>dp_ = dp;
		ll k_ = k;
		function<void(int)>dfs = [&](int l)
		{
			if (k < k_ || (k == k_ && dp.size() < dp_.size()))
			{
				k_ = k;
				dp_ = dp;
				ret_ = ret;
			}
			if (l == 0)
				return;
			int sz = (int)ret.size();
			int gal = 0;
			for (int i = sz - 1; i >= 0; i--)
			{
				ll sum = 0;
				for (int j = 0; j < (int)ret.size(); j++)
					if (ret[j] < i)
						sum += dp[j];
				if (sum <= k)
				{
					gal++;
					if (gal >= 3)
						break;
					k -= sum;
					dp.push_back(sum);
					for (int &j : ret)
						if (j >= i)
							j++;
					ret.push_back(i);

					dfs(l - 1);


					k += sum;
					dp.pop_back();
					ret.pop_back();
					for (int &j : ret)
						if (j >= i)
							j--;
				}
			}
		};
		dfs(2);
		ret = ret_;
		dp = dp_;
		k = k_;
	}
	ret.erase(ret.begin());
	return ret;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct

Subtask #2
81.333333333 / 90.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 2 ms 212 KB Output is correct
4 Correct 4 ms 340 KB Output is correct
5 Partially correct 19 ms 364 KB Partially correct
6 Correct 11 ms 340 KB Output is correct
7 Correct 17 ms 348 KB Output is correct
8 Partially correct 27 ms 340 KB Partially correct
9 Correct 7 ms 340 KB Output is correct
10 Partially correct 40 ms 360 KB Partially correct
11 Partially correct 33 ms 376 KB Partially correct
12 Partially correct 22 ms 340 KB Partially correct
13 Partially correct 38 ms 368 KB Partially correct