Submission #975997

#	Time	Username	Problem	Language	Result	Execution time	Memory
975997		Orifkhon	Permutation (APIO22_perm)	C++17	10 / 100	1096 ms	1468 KiB

perm

#include<bits/stdc++.h>
#include "perm.h"

using namespace std;
#ifdef LOCAL
#include "debug.cpp"
#else
#define debug(...) 
#endif


vector<int> construct_permutation(long long k) {
    int size = log2(k);

    vector<int> perm(size);
    for(int i = 0; i < size; i++){
        perm[i] = i;
    }	
    k-=(1 << size);
    int insert = size;
    while(true){
        if(k == 0){
            break;
        }
        int ind = log2(k);
        k-=(1 << ind);
        if(ind == 0){
            perm.insert(perm.begin(), insert);
            insert++;
            continue;
        }
        perm.insert(perm.begin() + ind, insert);
        insert++;
    }
    debug(perm);
    return perm;
}

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