#include <bits/stdc++.h>
using namespace std;
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n, a, b;
cin >> n;
if(n == 1) {
cout << 0 << "\n";
return 0;
}
vector<int> adj(n + 1, 0);
for(int i = 0; i < n - 1; i++) {
cin >> a >> b;
adj[a]++;
adj[b]++;
}
int maxx = adj[1];
for(int u = 2; u <= n; u++)
maxx = max(maxx, adj[u] - 1);
cout << maxx;
}
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