#include <iostream>
#include <vector>
using namespace std;
int n, rs = -1e9;
vector<vector<int>> graph;
void read() {
cin >> n;
graph.resize(n + 1);
for (int i = 1; i < n; i++) {
int a, b;
cin >> a >> b;
graph[a].emplace_back(b);
graph[b].emplace_back(a);
}
}
void dfs(int node, int par) {
int cnt = 0;
for (auto it : graph[node]) {
if (it == par) {
continue;
}
cnt ++;
dfs(it, node);
}
rs = max(rs, cnt);
}
void solve() {
dfs(1, 0);
cout << rs;
}
int main() {
read();
solve();
return 0;
}
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