Submission #710581

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
710581	2023-03-15 11:41:36	Astrayt	Permutation (APIO22_perm)	C++17	100 / 100	8 ms	356 KiB

perm

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define pb push_back
 
vector<int> construct_permutation(ll k){
    vector<int> d, ans;
    ll tmp = k;
    while(tmp){
        d.pb(tmp & 3ll);
        tmp >>= 2;
    }
    if(d.back() == 2) ans = {0};
    if(d.back() == 3) ans = {1, 0};
    d.pop_back();
    while(d.size()){
        int x = d.back(), n = ans.size(); d.pop_back();
        if(x == 0){
            ans.pb(n), ans.pb(n + 1);
        }else if(x == 1){
            ans.pb(n), ans.pb(n + 1), ans.pb(-1);
        }else if(x == 2){
            ans.pb(n), ans.pb(-1), ans.pb(n + 1);
        }else if(x == 3){
            bool flag = 0, flag2 = 0;
            for(auto x:ans){
                flag |= (x == 1);
                if(flag && x == 0) flag2 = 1;
            }
            if(flag2){
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

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