Submission #597597

#	Time	Username	Problem	Language	Result	Execution time	Memory
597597		boris_mihov	Permutation (APIO22_perm)	C++17	91.33 / 100	2 ms	340 KiB

perm

#include "perm.h"
#include <iostream>
typedef long long llong;

int unused = 120;
std::vector < int > ans;
std::vector < int > construct_permutation(llong k)
{
    ans.clear();
    unused = 120;
    bool flag = false;
    for (int bit = 59 ; bit >= 0 ; --bit)
    {
        if ((k & (1LL << bit)) == 0) continue;
        if (!flag)
        {
            flag = 1;
            for (int i = unused - bit + 1 ; i <= unused ; ++i)
            {
                ans.push_back(i);
            }
            unused -= bit;
            continue;
        }
        ans.insert(ans.begin() + (int)(ans.size() - bit), unused--);
    }

    for (int &i : ans) i -= unused + 1;
	return ans;
}

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