제출 #1343213

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1343213		Nipphitch	Group Photo (JOI21_ho_t3)	C++20	5 / 100	5130 ms	1044344 KiB

Main

#include <bits/stdc++.h>
using namespace std;
const int N=5005;

int n,a[N],ans;
map <vector <int>,bool> vis;
queue <pair <int,vector <int>>> q;

signed main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cin >> n;
    for(int i=1;i<=n;i++) cin >> a[i];
    vector <int> tmp;
    for(int i=1;i<=n;i++) tmp.push_back(a[i]);
    q.push({0,tmp});
    while(!q.empty()){
        auto [d_u,u]=q.front();
        q.pop();
        if(vis[u]) continue;
        vis[u]=true;
        bool ok=true;
        for(int i=0;i+1<n;i++) if(u[i+1]+2<=u[i]) ok=false;
        if(ok){
            cout << d_u;
            break;
        }
        for(int i=0;i+1<n;i++){
            swap(u[i],u[i+1]);
            if(!vis[u]) q.push({d_u+1,u});
            swap(u[i],u[i+1]);
        }
    }
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 7
• Subtask 3: 0 / 32
• Subtask 4: 0 / 20
• Subtask 5: 0 / 36