Submission #975521

#	Time	Username	Problem	Language	Result	Execution time	Memory
975521		KK_1729	Permutation (APIO22_perm)	C++17	91.33 / 100	2 ms	524 KiB

perm

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

int min(int x, int y){
	if (x < y) return x;
	return y;
}
std::vector<int> construct_permutation(long long k)
{	
	vector<int> a;
	while (k > 2){
		if (k%2 == 1){
			a.push_back(1);
			k--;
		}else{
			a.push_back(0);
			k/=2;
		}
	}
	reverse(a.begin(), a.end());


	int mini = -1; int maximum = 1;
	vector<int> ans;
	ans.push_back(0);
	for (auto x: a){
		if (x == 0){
			ans.push_back(maximum);
			maximum++;
		}else{
			ans.push_back(mini);
			mini--;

		}
	}
	int u = 1e9;
	for (auto x: ans){
		if (x < u) u = x;
	}
	if (u > 0){
		return ans;
	}
	for (int i = 0; i < ans.size(); ++i) ans[i] += abs(u);
	return ans;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:44:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |  for (int i = 0; i < ans.size(); ++i) ans[i] += abs(u);
      |                  ~~^~~~~~~~~~~~

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