1 #include<bits/stdc++.h>
2 #define ll long long
3 #define mod 998244353
4 using namespace std;
5 const int N=51;
6 int n,m,hd[N],o,sz[N],mx[N],Mx,tot;
7 struct Edge{int v,nt;}E[N<<1];
8 map<int,int>h;
9 string now,s[N],tmp[N];
10 void adde(int u,int v){
11 E[o]=(Edge){v,hd[u]};hd[u]=o++;
12 E[o]=(Edge){u,hd[v]};hd[v]=o++;
13 }
14 void get_rt(int u,int fa){
15 sz[u]=1;mx[u]=0;
16 for(int i=hd[u];~i;i=E[i].nt){
17 int v=E[i].v;
18 if(v==fa)continue;
19 get_rt(v,u);
20 sz[u]+=sz[v];
21 mx[u]=max(mx[u],sz[v]);
22 }
23 mx[u]=max(m-sz[u],mx[u]);
24 if(mx[u]<Mx)Mx=mx[u];
25 }
26 void dfs(int u,int fa){
27 s[u]="(";
28 for(int i=hd[u];~i;i=E[i].nt){
29 int v=E[i].v;
30 if(v==fa)continue;
31 dfs(v,u);
32 }
33 tot=0;
34 for(int i=hd[u];~i;i=E[i].nt){
35 int v=E[i].v;
36 if(v==fa)continue;
37 tmp[++tot]=s[v];
38 }
39 sort(tmp+1,tmp+tot+1);
40 for(int i=1;i<=tot;i++)s[u]=s[u]+tmp[i];
41 s[u]+=")";
42 }
43 int main(){
44 #ifndef ONLINE_JUDGE
45 freopen("bzoj4337.in","r",stdin);
46 freopen("bzoj4337.out","w",stdout);
47 #endif
48 scanf("%d",&n);
49 for(int I=1;I<=n;I++){
50 o=1;memset(hd,-1,sizeof(hd));
51 scanf("%d",&m);
52 for(int i=1,x;i<=m;i++){
53 scanf("%d",&x);
54 if(x)adde(x,i);
55 }
56 Mx=m;get_rt(1,0);
57 now="";
58 for(int i=1;i<=m;i++)if(Mx==mx[i]){
59 dfs(i,0);
60 if(now<s[i])now=s[i];
61 }
62 ll x=0;
63 for(int i=0;i<(int)now.length();i++){
64 x = ((x<<1) + now[i])%mod;
65 }
66 //printf("%s\n",now.c_str());
67 if(!h[x])h[x]=I;
68 printf("%d\n",h[x]);
69 }
70 return 0;
71 } 
bzoj4337
