Submission #575916

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
575916	2022-06-11 17:15:34	SHZhang	Permutation (APIO22_perm)	C++17	91.33 / 100	3 ms	356 KiB

perm

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#include "perm.h"
using namespace std;
#define ll long long
vector<int> construct_permutation(ll k)
{
  ll maxbit = 0;
  for (ll i = 62; i >= 0; i--) {
    if (k & (1LL << i)) {
      maxbit = i; break;
    }
  }
  vector<int> ops;
  for (ll i = maxbit - 1; i >= 0; i--) {
    ops.push_back(0);
    if (k & (1LL << i)) ops.push_back(1);
  }
  vector<int> ans;
  for (int i = 0; i < ops.size(); i++) {
    if (ops[i] == 0) {
      ans.push_back((int)ans.size());
    } else {
      for (int j = 0; j < ans.size(); j++) ans[j]++;
      ans.push_back(0);
    }
  }
  return ans;
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:21:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |  for (int i = 0; i < ops.size(); i++) {
      |                  ~~^~~~~~~~~~~~
perm.cpp:25:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |    for (int j = 0; j < ans.size(); j++) ans[j]++;
      |                    ~~^~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 81.333333333 / 90