Submission #726159

#	Time	Username	Problem	Language	Result	Execution time	Memory
726159		n0sk1ll	Permutation (APIO22_perm)	C++17	91.33 / 100	3 ms	384 KiB

perm

#include <bits/stdc++.h>

#define FAST ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);cerr.tie(0)
#define mp make_pair
#define xx first
#define yy second
#define pb push_back
#define pf push_front
#define popb pop_back
#define popf pop_front
#define all(x) x.begin(),x.end()
#define ff(i,a,b) for (int i = a; i < b; i++)
#define fff(i,a,b) for (int i = a; i <= b; i++)
#define bff(i,a,b) for (int i = b-1; i >= a; i--)
#define bfff(i,a,b) for (int i = b; i >= a; i--)

using namespace std;
long double typedef ld;
unsigned int typedef ui;
long long int typedef li;
pair<int,int> typedef pii;
pair<li,li> typedef pli;
pair<ld,ld> typedef pld;
vector<vector<int>> typedef graph;
unsigned long long int typedef ull;
//const int mod = 998244353;
const int mod = 1000000007;







//Note to self: Check for overflow

#include "perm.h"

vector<int> construct_permutation(li k)
{
	if (k<=90)
    {
        vector<int> ret;
        bff(i,0,k-1) ret.pb(i);
        return ret;
    }

    vector<int> p;
    li stp=1;
    while (2*stp<=k)
    {
        p.pb((int)p.size());
        stp*=2;
    }

    k-=stp;
    int m=(int)p.size();
    bff(i,0,m)
    {
        if (k&(1ll<<i))
        {
            ff(j,0,(int)p.size()) if (p[j]>=i) p[j]++;
            p.pb(i);
        }
    }

    return p;
}

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