Submission #911275

#	Time	Username	Problem	Language	Result	Execution time	Memory
911275		tosivanmak	Permutation (APIO22_perm)	C++17	0 / 100	1 ms	348 KiB

perm

#include<bits/stdc++.h>
using namespace std;
#define ll long long
const ll Log=15;
#define MAX 1e18
#define MOD 1000000007
typedef pair<ll,ll> LP;
#define ld long double

vector<ll>seq;
ll cur=1;
void bm(ll num){
    if(num==0){
        return;
    }
    if(num&1){
        bm(num/2);
        seq.push_back(cur);
        cur++;
    }
    else{
        bm((num-1)/2);
        seq.push_back(cur);
        seq.push_back(-cur);
        cur++;
    }
}
vector<int> construct_permutation(ll n){
   bm(n-1);
//    cout<<seq.size()<<'\n';
   vector<ll>seq2;
   for(auto& u: seq){
       seq2.push_back(u);
   }
   sort(seq2.begin(),seq2.end());
   vector<int>ans;
   for(auto& u: seq){
       ans.push_back(lower_bound(seq2.begin(),seq2.end(),u)-seq2.begin());
   }
   return ans;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 90