Submission #717748

#	Time	Username	Problem	Language	Result	Execution time	Memory
717748		125259	Permutation (APIO22_perm)	C++17	64.62 / 100	18 ms	1492 KiB

perm

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

vector<long long>num;
void start(){
	long long cnt=1;
	for(int i=0; i<63; i++){
		num.push_back(cnt);
		cnt*=2;
	}
	return;
}

vector<int> construct_permutation(long long k){
	start();
	vector<int>v;
	k--;
	for(int i=62; i>=0; i--){
		if(k>=num[i]){
			v.push_back(i);
			k-=num[i];
		}
	}
	deque<int>d;
	int cnt=-1;
	for(int i=0; i<v.size(); i++){
		cnt+=v[i];
		for(int j=0; j<v[i]; j++){
			d.push_front(cnt); cnt--;
		}
		cnt+=v[i];
	}
	cnt++;
	for(int i=0; i<v.size(); i++) {
		d.push_front(cnt); cnt++;
	}
	v.clear();
	for(int i=0; i<d.size(); i++)v.push_back(d[i]);
	return v;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:27:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |  for(int i=0; i<v.size(); i++){
      |               ~^~~~~~~~~
perm.cpp:35:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |  for(int i=0; i<v.size(); i++) {
      |               ~^~~~~~~~~
perm.cpp:39:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::deque<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |  for(int i=0; i<d.size(); i++)v.push_back(d[i]);
      |               ~^~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 54.615384612 / 90