Submission #982364

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
982364	2024-05-14 07:27:30	nnin	Permutation (APIO22_perm)	C++17	100 / 100	2 ms	360 KiB

perm

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#include "perm.h"
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
vector<int> construct_permutation(long long k)
{
  int g = __lg(k);
  vector<int> ans;
  int cur = 0;
  while(cur<g) {
    ans.push_back(cur++);
  }
  for(int i=g-1;i>=0;i--) {
    if(k & (1ll<<i)) {
      if(i>0 && (k&(1ll<<(i-1))) && ans.size()>=2 && ans[ans.size()-2]>ans[ans.size()-1]) {
        i--;
        for(int j=0;j<ans.size();j++) if(ans[j]>=i) ans[j]++;
        ans.insert(ans.end()-2, i);
      } else {
        for(int j=0;j<ans.size();j++) if(ans[j]>=i) ans[j]++;
        ans.push_back(i);
      }
    }
  }
  return ans;
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

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

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