Submission #777303

#	Time	Username	Problem	Language	Result	Execution time	Memory
777303		yeyso	Permutation (APIO22_perm)	C++17	10 / 100	1 ms	296 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(int i = 0; i < log(k+1) * 2; i ++){
        if(pow(2, i) <= k) {
            logs.push_back(pow(2, i)); 
            L = i;
        }
    }
    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(int 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: 0 / 90