Submission #982727

#	Time	Username	Problem	Language	Result	Execution time	Memory
982727		vjudge1	Permutation (APIO22_perm)	C++17	10 / 100	1 ms	428 KiB

perm

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

vector<int>construct_permutation(long long k){
	vector<int>b,r,sol(150,0);
	for(int i=0;k;i++){
		if(k&1)b.push_back(i);
		k/=2;
	}
	for(int i=0;i<b.back();i++){
		r.push_back(i*2+1);
		sol[i*2+1]=1;
	}
	b.pop_back();
	while(!b.empty()){
		r.push_back(b.back()*2);
		sol[b.back()*2]=1;
		b.pop_back();
	}
	for(int i=0,p=0;i<40;i++)
		if(sol[i]==1)sol[i]=p,p++;
	for(int i=0;i<r.size();i++){
		r[i]=sol[r[i]];
	}
	return r;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:23:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |  for(int i=0;i<r.size();i++){
      |              ~^~~~~~~~~

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