Submission #1357758

#TimeUsernameProblemLanguageResultExecution timeMemory
1357758channkPermutation (APIO22_perm)C++20
0 / 100
0 ms344 KiB
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast,O3,unroll-loops")
#pragma GCC target("avx,avx2,fma") 
#define ll long long
#define gcd __gcd
#define fi first
#define se second
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define ts cin.tie(nullptr)->sync_with_stdio(false);
#define debug cout<<"HI"<<endl;
const int inf = 1e9;
const ll infll = 1e18;
 
using namespace std;

vector<int> construct_permutation(ll k){
    deque<bool> ops;
    while(k>1){
        if(k%2==0){ ops.push_front(true); k/=2; }
        else{ ops.push_front(false); k--; }
    }
    deque<int> res;
    int lo=0, hi=ops.size()-1;
    for(auto op:ops){
        if(op) res.push_front(hi--);
        else res.push_back(lo++);
    }
    return vector<int>(all(res));
}

// int main(){
//     ts
//     ll n; cin >> n;
//     auto v = construct_permutation(n);
//     for(auto &i:v) cout << i << " ";
//     return 0;
// }
#Result Execution timeMemoryGrader output
Fetching results...
#Result Execution timeMemoryGrader output
Fetching results...