Submission #573029

#	Time	Username	Problem	Language	Result	Execution time	Memory
573029		MohamedAliSaidane	Art Collections (BOI22_art)	C++17	100 / 100	1756 ms	688 KiB

art

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include "art.h"
        using namespace __gnu_pbds;
        using namespace std;

        typedef tree<int,null_type,less<int>,rb_tree_tag,
        tree_order_statistics_node_update> indexed_set;

        typedef long long ll;
        typedef long double ld;

        typedef pair<int,int> pii;
        typedef pair<ll,ll> pll;
        typedef pair<ld,ld> pld;

        typedef vector<int> vi;
        typedef vector<ll> vll;
        typedef vector<pii> vpi;
        typedef vector<pll> vpl;

        #define pb push_back
        #define popb pop_back
        #define pp pop_back
        #define pf push_front
        #define popf pop_front
        #define all(x) (x).begin(),(x).end()
        #define ff first
        #define ss second

        ///#define int ll

        int nx[4] = {0,0,1,-1}, ny[4] = {1,-1,0,0};
        ll gcd(ll a , ll b) {return b ? gcd(b , a % b) : a ;}
        ll lcm(ll a , ll b) {return (a * b) / gcd(a , b);}

        const int nax = 4001;
        int n;
        /*
         int rnk[nax];
        int publish(vi a)
        {
            int rep = 0;
            for(int i = 0; i < n ; i++)
            {
                for(int j = 0; j < i ; j++)
                    rep += (rnk[a[i]] < rnk[a[j]]);
            }
            return rep;
        }
        */
        void solve(int N)
        {
            n = N;
            vi perm;
            for(int i = 1 ;i <= n; i ++)
                perm.pb(i);
            int cur = publish(perm);
            vi res;
            res.pb(n);
            for(int i = n - 1; i >= 1 ;i --)
            {
                vi nv;
                for(int j = 1; j <= n; j++)
                {
                    if(j != i)
                        nv.pb(j);
                }
                nv.pb(i);
                int c= publish(nv);
                int delt = c - cur;
                vi chg;
                //cout << i << ' ' << delt << '\n';
                for(int j = 0; j < (n - i); j++)
                {
                    if(delt == n - i - 2 *j)
                        chg.pb(i);
                    chg.pb(res[j]);
                }
                if(delt == - (n - i))
                    chg.pb(i);
                swap(res,chg);
            }
            answer(res);
        }
        /*
        int main()
        {
            ios::sync_with_stdio(false);
            cin.tie(0); cout.tie(0);
            int N; cin >> N;
            for(int i = 0; i < N; i ++)
            {
                int x; cin >> x;
                rnk[x] = i;
            }
            vi u = solve(N);
            for(auto e: u)
                cout << e << ' ' ;
        }
        */

Compilation message (stderr)

interface.cpp: In function 'int publish(std::vector<int>)':
interface.cpp:20:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   20 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~
interface.cpp: In function 'void answer(std::vector<int>)':
interface.cpp:36:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   36 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~

• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 15 / 15
• Subtask 4: 15 / 15
• Subtask 5: 20 / 20
• Subtask 6: 30 / 30