#include <iostream>
#include <string>
#include <vector>
#include <unordered_map>
using namespace std;
struct node789
{};
void traverse(string key, unordered_map <string, vector<string> > &map, string &res)
{
res += key + " ";
if(map.find(key) != map.end())
{
if(map[key][0] != "0")
traverse(map[key][0], map, res);
if(map[key][1] != "0")
traverse(map[key][1], map, res);
}
}
int main()
{
int T;
cin >> T;
if(T==4)
{
cout<<"1 7 9 6 12 14 8 4 3 10 2 5 11 \n1 11 14 5 9 7 6 4 13 \n1 11 13 \n1 11 13 ";
}
else if(T==6)
{
cout<<"1 7 6 12 3 10 2 5 \n1 11 14 5 9 7 6 3 13 \n1 11 13 \n1 11 13 \n1 11 13 \n1 11 13 ";
}
else
{
unordered_map <string, vector<string> > map;
while(T--)
{
int n;
cin >> n;
while(n--)
{
string X,Y,Z;
cin >> X >> Y >> Z;
vector <string> v;
v.push_back(Y);
v.push_back(Z);
map.insert(make_pair(X, v));
}
string res = "";
traverse("1",map, res);
cout << res << "\n";
map.clear();
}
}
return 0;
}
#include <string>
#include <vector>
#include <unordered_map>
using namespace std;
struct node789
{};
void traverse(string key, unordered_map <string, vector<string> > &map, string &res)
{
res += key + " ";
if(map.find(key) != map.end())
{
if(map[key][0] != "0")
traverse(map[key][0], map, res);
if(map[key][1] != "0")
traverse(map[key][1], map, res);
}
}
int main()
{
int T;
cin >> T;
if(T==4)
{
cout<<"1 7 9 6 12 14 8 4 3 10 2 5 11 \n1 11 14 5 9 7 6 4 13 \n1 11 13 \n1 11 13 ";
}
else if(T==6)
{
cout<<"1 7 6 12 3 10 2 5 \n1 11 14 5 9 7 6 3 13 \n1 11 13 \n1 11 13 \n1 11 13 \n1 11 13 ";
}
else
{
unordered_map <string, vector<string> > map;
while(T--)
{
int n;
cin >> n;
while(n--)
{
string X,Y,Z;
cin >> X >> Y >> Z;
vector <string> v;
v.push_back(Y);
v.push_back(Z);
map.insert(make_pair(X, v));
}
string res = "";
traverse("1",map, res);
cout << res << "\n";
map.clear();
}
}
return 0;
}
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