Submission #1277058

#	Time	Username	Problem	Language	Result	Execution time	Memory
1277058		al95ireyiz	Permutation (APIO22_perm)	C++20	0 / 100	0 ms	332 KiB

perm

#pragma GCC optimize("O3", "fast-math", "unroll-loops", "no-stack-protector")
#include <bits/stdc++.h>
using namespace std;
#if !defined(ONLINE_JUDGE) and !defined(EVAL)
#include "template/debug.h"
#else
#define d(x...)
#endif
#define fr first
#define er erase
#define in insert
#define sc second
#define ll long long
#define pb push_back
#define vll vector<ll>
#define pll pair<ll,ll>
#define len(x) (ll) x.size()
#define all(x) x.begin(),x.end()
const ll INF = 1e9, INFL = 1e18;
const ll MOD = 1e9 + 7;
// const ll MOD = 998244353;
const ll maxn = 2e5 + 5;

ll n, m, k = 0;

ll f(ll ind, vector<int> &v){
    // [0, ind - 1] kohne yol
    // [ind, n - 1] yeni yol
    ll cv = 0;
    for(ll i = 0; i <= ind - 1; i ++){
        cv += v[i];
    }
    for(ll i = ind; i <= n - 1; i ++){
        if(i == ind) cv += v[i];
        else cv += v[i] - (v[ind] - 1);
    }
    return cv;
}
std::vector<int> construct_permutation(long long _k)
{
    m = _k;
    vector<int> v, cv;
    ll cm = 0, noilk = 0;
    while(m){
        ll l = 1, r = 60, cv;
        while(l <= r){
            ll md = (l + r) >> 1;
            if((1LL << md) - noilk <= m){
                cv = md, l = md + 1;
            }
            else{
                r = md - 1;
            }
        }
        v.pb(cv);
        m -= (1LL << cv) - noilk;
        if(noilk == 0) noilk = 1;
        cm += cv;
    }
    n = len(v);
    sort(all(v));
    ll mn = INF, ind = 0;
    for(ll i = 0; i < len(v); i ++){
        ll x = f(i, v);
        if(x < mn){
            mn = x;
            ind = i;
        }
    }
    for(ll i = 0; i <= ind - 1; i ++){
        for(ll j = cm - v[i] + 1; j <= cm; j ++){
            // cout << j << ' ';
            cv.pb(j - 1);
        }
        cm -= v[i];
    }
    for(ll i = ind + 1; i <= n - 1; i ++){
        v[i] -= v[ind] - 1;
    }
    for(ll i = 1; i <= v[ind]; i ++){
        cv.pb(i - 1);
    }
    for(ll i = ind + 1; i <= n - 1; i ++){
        for(ll j = cm - v[i] + 1; j <= cm; j ++){
            cv.pb(j - 1);
        }
        cm -= v[i];
    }
    return cv;
}
// void _() {
//     ll q;
//     cin >> q;
//     auto v = construct_permutation(q);
//     for(auto i : v) cout << i << ' ' ;
// }
// signed main() {
//     ll tm = clock();
//     cin.tie(0)->sync_with_stdio(0);
//     ll t = 1;
//     // cin >> t;
//     for(ll tt = 1; tt <= t; tt ++) _();
//     cerr << "\n\033[1;31mTime: \033[1;30m" \
//         << (double)(clock()-tm)/1000000 << "\033[1;32m seconds\n";
// }

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