Submission #926892

#	Time	Username	Problem	Language	Result	Execution time	Memory
926892		irmuun	Swap (BOI16_swap)	C++17	21 / 100	1066 ms	604 KiB

swap

#include<bits/stdc++.h>

using namespace std;

#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    ll n;
    cin>>n;
    vector<ll>a(n+1);
    a[0]=0;
    for(ll i=1;i<=n;i++){
        cin>>a[i];
    }
    vector<ll>ans(n+1,1e18);
    for(ll j=0;j<(1<<(n/2));j++){
        ll cur=j;
        vector<ll>b=a;
        for(ll i=1;i<=n;i++){
            ll x=i*2,y=i*2+1;
            if(x>n) continue;
            if(x==n){
                if(b[i]>b[x]) swap(b[i],b[x]);
            }
            else{
                ll c[3];
                c[0]=b[i];
                c[1]=b[x];
                c[2]=b[y];
                sort(c,c+3);
                if(b[i]==c[0]) continue;
                if(b[x]==c[0]){
                    swap(b[x],b[i]);
                }
                else{
                    if(cur&1){
                        swap(b[i],b[x]);
                    }
                    swap(b[i],b[y]);
                    cur=cur>>1;
                }
            }
        }
        ans=min(ans,b);
    }
    for(ll i=1;i<=n;i++){
        cout<<ans[i]<<' ';
    }
}

• Subtask 1: 10 / 10
• Subtask 2: 11 / 11
• Subtask 3: 0 / 27
• Subtask 4: 0 / 20
• Subtask 5: 0 / 32