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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#381188#7738. Equivalent Rewritingucup-team3294WA 2ms21904kbC++142.2kb2024-04-07 16:28:122024-04-07 16:28:13

Judging History

你现在查看的是最新测评结果

  • [2024-04-07 16:28:13]
  • 评测
  • 测评结果:WA
  • 用时:2ms
  • 内存:21904kb
  • [2024-04-07 16:28:12]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
const int N=2e6+10;
int h[N],e[N],ne[N];
int idx;
int d[N];
int n,m;
void add(int a,int b)
{
    e[idx]=b;
    ne[idx]=h[a];
    d[b]++;
    h[a]=idx++;
}
void solve()
{
   // cout<<"aa"<<endl;
    for(int i=1;i<=m+2;i++)
    {
        d[i]=0;
        h[i]=-1;
       // pre[i]=-1;
    }
   // cout<<"aa"<<endl;
    
    cin>>n>>m;
    vector<int> pre(m+1,-1);
    for(int i=1;i<=n;i++)
    {
        int num;
        cin>>num;
        for(int j=1;j<=num;j++)
        {
            int x;
            cin>>x;
            if(pre[x]==-1)
            {
                pre[x]=i;
               // cout<<"aa"<<endl;
            }
            else
            {
                add(pre[x],i);
               // cout<<pre[x]<<"aa"<<i<<endl;
                pre[x]=i;
            }
        }
    }
    vector<int> ans;
    vector<bool> check(m+1,0);
    priority_queue<int> q;
    for(int i=n;i>=1;i--)
    {
        if(d[i]==0)
        {
            q.push(i);
            check[i]=true;
        }
    }
    while(q.size())
    {
        auto t=q.top();
        ans.push_back(t);
        q.pop();
        for(int i=h[t];i!=-1;i=ne[i])
        {
            int j=e[i];
            d[j]--;
            if(d[j]==0)
            {
                q.push(j);
                check[j]=true;
            }
        }


    }
    for(int i=1;i<=n;i++)
    {
        if(d[i]&&check[i])
        {
            cout<<"No"<<endl;
            return ;
            
        }
    }
    bool flag=false;
    for(int i=0;i<n;i++)
    {
        if(ans[i]!=i+1)
        {
            cout<<"Yes"<<endl;
            flag=true;
            break;
        }
    }
    if(!flag)
    {
        cout<<"No"<<endl;
        return ;
    }
    for(int i=0;i<ans.size();i++)
    {
        cout<<ans[i]<<' ';
    }
    cout<<endl;




}
signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    memset(h,-1,sizeof h);
    int T=1;
    cin>>T;
   // cout<<"aa"<<endl;
    while(T--)
    {
        solve();
    }
}

Details

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Test #1:

score: 100
Accepted
time: 0ms
memory: 21292kb

input:

3
3 6
3 3 1 5
2 5 3
2 2 6
2 3
3 1 3 2
2 3 1
1 3
2 2 1

output:

Yes
3 1 2 
No
No

result:

ok OK. (3 test cases)

Test #2:

score: -100
Wrong Answer
time: 2ms
memory: 21904kb

input:

1
10 5
2 2 4
4 1 3 4 2
1 2
3 2 1 4
4 5 2 4 3
3 2 5 4
3 5 4 2
3 1 3 2
5 1 4 2 3 5
1 4

output:

No

result:

wrong answer jury found an answer but participant did not (test case 1)