Submission #573159

#	Time	Username	Problem	Language	Result	Execution time	Memory
573159		Vanilla	Permutation (APIO22_perm)	C++17	91.33 / 100	3 ms	340 KiB

perm

#include "perm.h"
#include <bits/stdc++.h>
using namespace std;

long long find (long long k) {
	for (long long i = 1; i < 63; i++){
		if ((1ll << i) > k) return i-1;
	}
}

std::vector<int> construct_permutation(long long k)
{
	vector <int> rs;
	long long pw [100] = {};
	k-=2;
	int sp = 1000;
	pw[0] = sp - 1;
	rs.push_back(sp);
	int step = 1;
	while (k != 0) {
		int hg = min(int(find(k)), step);
		if (pw[hg] == 0) {
			pw[hg] = pw[hg - 1] + sp;
		}
		rs.push_back(pw[hg]--);
		k-=(1ll << hg);
		step++;
	}
	vector <int> v = rs;
	sort(v.begin(), v.end());
	map <int, int> mp;
	for (int i = 0; i < v.size(); i++){
		mp[v[i]] = i;
	}
	for (int &i: rs){
		i = mp[i];
	}
	return rs;

}

// int main (){
// 	construct_permutation(12);
// }

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:32:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |  for (int i = 0; i < v.size(); i++){
      |                  ~~^~~~~~~~~~
perm.cpp: In function 'long long int find(long long int)':
perm.cpp:9:1: warning: control reaches end of non-void function [-Wreturn-type]
    9 | }
      | ^

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