Submission #983288

#	Time	Username	Problem	Language	Result	Execution time	Memory
983288		Sir_Ahmed_Imran	Permutation (APIO22_perm)	C++17	91.33 / 100	1 ms	348 KiB

perm

                              ///~~~LOTA~~~///
#include "perm.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define append push_back
#define add insert
#define nl '\n'
#define ff first
#define ss second
#define pii pair<int,int>
#define pll pair<ll,ll>
#define all(x) (x).begin(),(x).end()
#define L0TA ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define terminator main
#define N 60
ll pwr[N];
vector<int> construct_permutation(ll n){
    int m;
    pwr[0]=1;
    vector<int> u,v;
    for(ll i=1;i<N;i++)
        pwr[i]=pwr[i-1]*2LL;
    for(int i=59;i>0;i--){
        if(n<pwr[i]) continue;
        n-=pwr[i];
        if(v.empty()){
            m=i;
            for(int j=0;j<i;j++)
                v.append(j);
            continue;
        }
        u.append(v[m-i]);
        for(int j=m-i;j<m;j++)
            v[j]++;
    }
    if(n) u.append(v.back()+1);
    reverse(all(u));
    for(auto& i:v)
        u.append(i);
    return u;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:20:9: warning: 'm' may be used uninitialized in this function [-Wmaybe-uninitialized]
   20 |     int m;
      |         ^

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