Submission #993158

#	Time	Username	Problem	Language	Result	Execution time	Memory
993158		thelegendary08	Permutation (APIO22_perm)	C++17	10 / 100	5 ms	812 KiB

perm

#include "perm.h"
#include<bits/stdc++.h>
#define vi vector<int>
#define f0r(i, n) for(int i = 0;i<n;i++)
#define ll long long int
#define pb push_back
using namespace std;

std::vector<int> construct_permutation(long long k)
{
    k--;
    vi ans;
    vi nums;
    int ansl = 0;
    ll cur;
    for(int i = 59; i > 1; i--){
        cur = pow(2, i) - 1;
        if(k > (cur)){
            k -= cur;
            ansl += i;
            nums.pb(i);
        }
    }
    //for(auto u : nums)cout<<u<<' ';
    //cout<<'\n';
    int curr = ansl - 1;
    ansl += k - 1;
    f0r(i, k){
        ans.pb(ansl);
        ansl--;
    }
    for(auto u : nums){
        for(int i = curr - u + 1; i <= curr; i++)ans.pb(i);
        curr -= u;
    }
    //for(auto u : ans)cout<<u<<' ';
    return ans;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 90