Submission #623524

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
623524	2022-08-05 18:51:34	Lobo	Permutation (APIO22_perm)	C++17	100 / 100	2 ms	352 KiB

perm

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#include "perm.h"
#include<iostream>
#include<vector>
#include<deque>
#include<math.h>
using namespace std;
#define pb push_back
#define pf push_front
#define int long long
vector<int32_t> construct_permutation(int k)
{
    vector<int32_t> seq;
    int lg = 0;
    for(int i = 0; i <= 60; i++) {
        if(k >= (1LL<<i)) lg = i;
    }
    if(lg < 2) {
        for(int i = k-2; i >= 0; i--) {
            seq.pb(i);
        }
        return seq;
    }
    deque<int> ans;
    int cur = 0;
    //do the first 2/3 separate
    if((1LL<<(lg-1))&k) {
        //begins with 11
        ans.pb(cur++); //10
        ans.pf(cur++); //11
 
 
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Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:68:30: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::deque<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |             for(int i = 0; i < ans.size(); i++) {
      |                            ~~^~~~~~~~~~~~

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