#include<bits/stdc++.h> using namespace std; int arr[11]; int main(){ int a,b,c; int n; cin >> n; for(int i =1;i <= n;i++){ cin >> a >> b >> c; arr[a]++; arr[b]++; arr[c]++; } int max; max = a[1]; for(int i = 2;i <= n;i++){ if(max < a[i]){ max = a[i]; } } cout << max; return 0; }