#include<bits/stdc++.h>
const long long maxn=4e6+1;
inline const void read(long long &a)
{
	char c=getchar();a=0;
	while(c<'0'||c>'9')c=getchar();
	while(c>='0'&&c<='9')
	{
		a=(a<<1)+(a<<3)+c-'0';
		c=getchar();
	}
}
long long n,d=0,kk=1;
long long point[maxn],next[maxn],father[maxn],to[maxn],ans[maxn],num[maxn],sum[maxn],deep[maxn];
bool vis[maxn];
inline const void add(long long a,long long b)
{
	next[++d]=point[a];
	point[a]=d;
	to[d]=b;
}
inline const void dfs1(long long p)
{
	vis[p]=true;
	long long side=point[p];
	num[p]=1;sum[p]+=deep[p];
	while(side)
	{
		if(!vis[to[side]])
		{
			father[to[side]]=p;
			deep[to[side]]=deep[p]+1;
			dfs1(to[side]);
			num[p]+=num[to[side]];sum[p]+=sum[to[side]];
		}
		side=next[side];
	}
}
inline const void dfs2(long long p)
{
	
	if(p!=1)ans[p]=ans[father[p]]-2*num[p]+num[1];
	if(ans[p]>ans[kk])kk=p;
	if(ans[p]==ans[kk]&&p<kk)kk=p;
	vis[p]=true;
	long long side=point[p];
	while(side)
	{
		if(!vis[to[side]])dfs2(to[side]);
		side=next[side];
	}
}
int main()
{
	memset(father,0,sizeof(father));
	memset(sum,0,sizeof(sum));
	memset(point,0,sizeof(point));
	memset(ans,0,sizeof(ans));
	read(n);
	long long u,v;
	for(long long i=1;i<=n-1;i++){read(u);read(v);add(u,v);add(v,u);}
	deep[1]=0;
	memset(vis,false,sizeof(vis));
	dfs1(1);
	memset(vis,false,sizeof(vis));ans[1]=sum[1];
	dfs2(1);
	std::cout<<kk;
	return  0;
}