Submission #972161

#	Time	Username	Problem	Language	Result	Execution time	Memory
972161		tamir1	Permutation (APIO22_perm)	C++17	91.33 / 100	2 ms	500 KiB

perm

#include "perm.h"
#include <iostream>
#define ll long long
using namespace std;
vector<int> construct_permutation(long long k)
{
	ll t=1,i,j,idx,idx1,cnt[200],sum=0;
	vector<ll> v,u;
	while(true){
		if(t>k) break;
		v.push_back(t);
		t=t*2;
	}
	fill(cnt,cnt+200,0);
	while(k>0){
		for(i=v.size()-1;i>=0;i--){
			if(v[i]<=k){
				u.push_back(i);
				k-=v[i];
				break;
			}
		}
	}
	sum=u[0];
	idx1=0;
	for(i=1;i<u.size();i++){
		sum++;
		cnt[u[i]]++;
	}
	idx=sum;
	vector<int> ans(sum);
	for(i=ans.size()-1;i>=0;i--){
		if(cnt[sum-idx]>0){
			ans[i]=idx1;
			idx1++;
			cnt[sum-idx]--;
		}
		else{
			idx--;
			ans[i]=idx;
		}
	}
	return ans;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:26:11: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |  for(i=1;i<u.size();i++){
      |          ~^~~~~~~~~
perm.cpp:7:11: warning: unused variable 'j' [-Wunused-variable]
    7 |  ll t=1,i,j,idx,idx1,cnt[200],sum=0;
      |           ^

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