Submission #897031

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
897031	2024-01-02 12:48:02	Litusiano	Permutation (APIO22_perm)	C++17	64.62 / 100	11 ms	1640 KiB

perm

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#pragma GCC optimize("Ofast,unroll-loops,no-stack-protector,fast-math,inline")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,lzcnt,mmx,abm,avx,avx2,fma")
#include<bits/stdc++.h>
 // #include "perm.h"
using namespace std;
vector<int> construct_permutation(long long k)
{
  k--;
  int sz = 0;
  for(int i = 0; i<62; i++){
    if(k & (1ll<<i)) sz+=i+1;
  }
  for(int i = 0; i<sz; i++){
    // k-=sz-i;
  }
  // sz--;
  vector<int> v; 
  for(int i = 0; i<sz; i++) v.push_back(i);
  reverse(v.begin(),v.end());
  // for(int i = 0; i<v.size(); i++) cout<<v[i]<<" "; cout<<endl;
  int act = 0;
  for(int i = 0; i<62; i++){
    if(k & (1ll<<i)){
      reverse(v.begin()+act,v.begin()+act+i);
      act++;
      act+=i;
    }
  }
  // if(k%2 == 1) v.pop_back();
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 54.615384612 / 90