Submission #577300

#	Time	Username	Problem	Language	Result	Execution time	Memory
577300		handlename	Permutation (APIO22_perm)	C++17	91.33 / 100	2 ms	340 KiB

perm

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
const int MOD=1e9+7;
long long num[63];
vector<int> construct_permutation(long long k){
	k--;
	num[0]=1;
	for (int i=1;i<63;i++){
		num[i]=num[i-1]*2;
	}
	vector<int> res;
	int cur=0;
	while (k>0){
		int pos=min((int)res.size(),62);
		while (k<num[pos]) pos--;
		res.insert(res.begin()+pos,cur);
		k-=num[pos];
		cur++;
	}
	assert(res.size()<=128);
	return res;
}

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