Submission #744378

#	Time	Username	Problem	Language	Result	Execution time	Memory
744378		merlynn	Permutation (APIO22_perm)	C++17	Compilation error	0 ms	0 KiB

perm

#include <bits/stdc++.h>
#include "perm.h"
using namespace std;
 
vector<long long> construct_permutation(long long k) {
	string bn="";
	while(k)
	{
		bn+=k%2+'0';
		k/=2;
	}
	reverse(bn.begin(),bn.end());
	vector<long long> ret;
	int cur=0;
	for(long long i=1;i<bn.size();i++)
	{
		ret.push_back(cur++);
		if(bn[i]=='1')
			ret.insert(ret.begin(),cur++);
	}
	return ret;
}

Compilation message (stderr)

perm.cpp:5:19: error: ambiguating new declaration of 'std::vector<long long int> construct_permutation(long long int)'
    5 | vector<long long> construct_permutation(long long k) {
      |                   ^~~~~~~~~~~~~~~~~~~~~
In file included from perm.cpp:2:
perm.h:3:18: note: old declaration 'std::vector<int> construct_permutation(long long int)'
    3 | std::vector<int> construct_permutation(long long k);
      |                  ^~~~~~~~~~~~~~~~~~~~~
perm.cpp: In function 'std::vector<long long int> construct_permutation(long long int)':
perm.cpp:15:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  for(long long i=1;i<bn.size();i++)
      |                    ~^~~~~~~~~~