Submission #777308

#	Time	Username	Problem	Language	Result	Execution time	Memory
777308		yeyso	Permutation (APIO22_perm)	C++17	91.33 / 100	2 ms	340 KiB

perm

#include "perm.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> construct_permutation(long long k)
{
    vector<long long> logs;
    int L = 0;
    for(long long i = 0; i <= log(k) * 2; i ++){
        long long x = pow(2, i);
        if(x <= k) {
            logs.push_back(x); 
            L = i;
        } else {
            break;
        }
    }
    //cout << logs[logs.size()-1];
    vector<int> res(L, 0);

    k -= logs[logs.size()-1];
    //int x = log(k+1) / log(2) + 1;
    iota(res.begin(), res.end(), 0);

    while(k > 0){
        for(long long i = logs.size() - 1; i >= 0; i --){
            if(logs[i] <= k){
                res.insert(res.begin() + i, L);
                k -= logs[i];
                break;
            }
        }
        L += 1;
    }
    /*for(int i = 0; i < res.size(); i ++){
        cout << res[i] << " ";
    }*/
	return res;
}
/*
g++ -std=gnu++17 -Wall -O2 -static -o perm grader.cpp perm.cpp
*/

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