Submission #1354883

#TimeUsernameProblemLanguageResultExecution timeMemory
1354883hsuan._.0528Carnival (EGOI23_carnival)C++20
63 / 100
1094 ms3616 KiB
//pa

#include<bits/stdc++.h>
using namespace std;
#define LL long long
const int maxn = 1000 + 10;

int n;
int a[maxn][maxn];
vector<int> v[maxn];
int cnt[maxn];
int order[maxn];
int vis[maxn];

bool cmp(int a, int b){
    if(vis[a]!=vis[b])  return vis[a]!=0;
    return cnt[a]<cnt[b];
}

void dfs(int x, int num){
 // cout<<x<<"\n";
    if(num==n){
        for(int i=1; i<=n; i++)  cout<<order[i]<<" ";
        exit(0);
    }
    sort(v[x].begin(), v[x].end(), cmp);
    for(int y: v[x]){
        if(vis[y])  continue;
        order[num+1] = y;
        vis[y]=1;
        for(int k: v[y])  cnt[k]--;
        dfs(y, num+1);
        vis[y]=0;
        for(int k: v[y])  cnt[k]++;
    }
}

signed main(){
    ios_base::sync_with_stdio(0);  cin.tie(0);

    cin>>n;
    for(int i=0; i<n; i++)
        for(int j=0; j<i; j++){
            int a;  cin>>a;
            if((j+1) <= (i+1)/2){
                cnt[i]++;  cnt[a]++;
                v[a].push_back(i);
                v[i].push_back(a);
            }
        }

    order[1] = n-1;
    vis[n-1]=1;
    dfs(n-1, 1);
}
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