Submission #974885

#	Time	Username	Problem	Language	Result	Execution time	Memory
974885		AlperenT_	Permutation (APIO22_perm)	C++17	91.33 / 100	2 ms	592 KiB

perm

#include <bits/stdc++.h>

#pragma GCC optimize("O3,unroll-loops")
#define pb push_back
#define F first             
#define S second 
#define ld long double
#define all(a) a.begin(),a.end()
#define pii pair <int,int>
#define ll long long 
#define sz(v) (int)v.size()
#define rep(i , a , b) for(int i=a;i <= (b);i++)
#define per(i , a , b) for(int i=a;i >= (b);i--)
#define deb(x) cout <<#x << " : " << x << "\n" ;
using namespace std ;

const int maxn = 2e6 + 10 , maxq = 32, inf = 1e9+10 , lg = 19  ,sq = 1000 ,mod = 998244353 ;
ll dp[maxn] ;

vector<int> construct_permutation(ll k){
    k -- ;
    vector <int> ans ;
    int c= 0 ;
    while(k){
        ll t = 1;
        int id =sz(ans) ;
        rep(i ,0 , sz(ans)-1){
            if(t+dp[ans[i]] <= k){
                t += dp[ans[i]] ;
            }else{
                id = i ;
                break;
            }
        }
        ans.pb(0);
        per(i , sz(ans)-2 , id){
            swap(ans[i] , ans[i+1]) ;
        }
        k-=t; 
        dp[c] =t ;
        ans[id] = c ;
        c++;
    }
    return ans ;
}

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