// kozos os.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
#include <iostream>
#include <vector>
#include <deque>
using namespace std;
struct adat
{
bool lat;
long long lep,gyerek;
vector<long long>sz;
};
int n, m, a, b, akt,i,kezd,maxi;
vector<adat>x;
deque<long long>v;
int main()
{
cin >> n;
x.resize(n + 1);
for (i = 1; i <= n-1; ++i)
{
cin >> a >> b;
x[a].sz.push_back(b);
x[b].sz.push_back(a);
x[b].gyerek = 1;
}
for (i = 1; i <= n; ++i)
{
if (!x[i].gyerek)
{
kezd = i;
break;
}
}
maxi = -999;
//cout << kezd;
v.push_back(kezd);
x[kezd].lat = true;
while (!v.empty())
{
akt = v.front();
v.pop_front();
for (auto& e : x[akt].sz)
{
if (!x[e].lat)
{
x[e].lat = true;
x[e].lep = x[akt].lep + 1;
v.push_back(e);
}
}
}
for (i = 1; i <= n; ++i)
{
if (x[i].lep > maxi)
{
maxi = x[i].lep;
kezd = i;
}
}
cout << kezd;
return 0;
}
/*
8
1 4
5 7
8 6
8 5
3 1
3 2
3 8
*/
// Run program: Ctrl + F5 or Debug > Start Without Debugging menu
// Debug program: F5 or Debug > Start Debugging menu
// Tips for Getting Started:
// 1. Use the Solution Explorer window to add/manage files
// 2. Use the Team Explorer window to connect to source control
// 3. Use the Output window to see build output and other messages
// 4. Use the Error List window to view errors
// 5. Go to Project > Add New Item to create new code files, or Project > Add Existing Item to add existing code files to the project
// 6. In the future, to open this project again, go to File > Open > Project and select the .sln file