Submission #708462

#	Time	Username	Problem	Language	Result	Execution time	Memory
708462		Essa2006	Permutation (APIO22_perm)	C++17	10 / 100	1069 ms	296 KiB

perm

#include<bits/stdc++.h>
#include "perm.h"
using namespace std;
#define ll long long 
#define endl '\n'
#define FF first
#define SS second
#define all(a) a.begin(), a.end()
#define mod (ll)(1000000007)
int gr(int n){
    int pr=0;
    for(;pr<1e9;pr++){
        if((1<<pr)>n)
            break;
    }
    return pr-1;
}
vector<int> construct_permutation(ll k){
    int j=k;
    k--;
    vector<int>Base, Ans;
    map<int, priority_queue<int>>mp;
    int las=0, cur=0;
    Base.push_back(-1);
    while(k){
        int mx=min(gr(k), las);
        k-=1<<mx;
        if(mx==las)
            Base.push_back(cur++), las++;
        else
            mp[Base[mx]].push(cur++);
    }
    for(int i=0;i<Base.size();i++){
        if(i)
            Ans.push_back(Base[i]);
        while(!mp[Base[i]].empty()){
            Ans.push_back(mp[Base[i]].top());
            mp[Base[i]].pop();
        }
    }
//    cout<<j<<endl<<"      ";
//    for(int i=0;i<Ans.size();i++){
//        cout<<Ans[i]<<' ';
//    }
//    cout<<endl;
    return Ans;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:33:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |     for(int i=0;i<Base.size();i++){
      |                 ~^~~~~~~~~~~~
perm.cpp:19:9: warning: unused variable 'j' [-Wunused-variable]
   19 |     int j=k;
      |         ^

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