#include <bits/stdc++.h> using namespace std; int main() { int n; cin >> n; int a[11] = {0}; for (int i = 1; i <= 3 * n; i++) { int x; cin >> x; a[x] = a[x] + 1; } int m = 1; for (int i = 2; i <= n; i++) { m = i; } cout << m; return 0; }