Submission #1226824

#	Time	Username	Problem	Language	Result	Execution time	Memory
1226824		cpdreamer	순열 (APIO22_perm)	C++20	91 / 100	1 ms	328 KiB

perm

#include "perm.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using namespace std;
const long long INF = 1e17;
typedef long long ll;
const ll MOD = 998244353;
#define F first
#define pb push_back
#define S second
#define P pair
#define V vector
#define all(v) v.begin(), v.end()
int  mx(ll n) {
    int maxd=0;
    for (int i=0;i<60;i++) {
        if (((1LL<<i)&n)!=0) {
            maxd=i;
        }
    }
    return maxd;
}
std::vector<int> construct_permutation(long long k)
{
    k--;
    if (k==1) {
        return {0};
    }
    int id=mx(k);
    V<int>vp;
    int g=0;
    for (int i=0;i<id;i++) {
        vp.pb(i+g);
        if (((1LL<<(i+1))&k)!=0 && i+1!=id) {
            g++;
        }
    }
    int num=1;
    if ((k&1)!=0) {
        num++;
    }
    for (int i=id-1;i>=1;i--) {
        if (((1LL<<i)&k)!=0) {
            vp.pb(vp[i-1]+1);
        }
    }
    for (auto &u:vp) {
        u+=num;
    }
    for (int i=num-1;i>=0;i--) {
        vp.pb(i);
    }
    return vp;
}

• Subtask 1: 10 / 10
• Subtask 2: 81 / 90