Submission #579800

#	Time	Username	Problem	Language	Result	Execution time	Memory
579800		peuch	Permutation (APIO22_perm)	C++17	10 / 100	1098 ms	304 KiB

perm

#include "perm.h"
#include<bits/stdc++.h>
using namespace std;

std::vector<int> construct_permutation(long long k)
{
	if(k == 1) return vector<int> (0);
	if(k == 2) return vector<int> (1);
	vector<int> ret;
	for(int i = 2; i * i <= k; i++){
		if(k % i != 0) continue;
		vector<int> aux1 = construct_permutation(i);
		vector<int> aux2 = construct_permutation(k / i);
		if(ret.empty() || aux1.size() + aux2.size() < ret.size()){
			ret.clear();
			for(int i = 0; i < aux1.size(); i++)
				ret.push_back(aux1[i]);
			for(int i = 0; i < aux2.size(); i++)
				ret.push_back(aux2[i] + aux1.size());
		}
	}
	if(ret.empty()){
		ret = construct_permutation(k - 1);
		ret.insert(ret.begin(), ret.size());
	}
	return ret;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:16:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |    for(int i = 0; i < aux1.size(); i++)
      |                   ~~^~~~~~~~~~~~~
perm.cpp:18:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |    for(int i = 0; i < aux2.size(); i++)
      |                   ~~^~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 90