#include<iostream> using namespace std; int a[1005]; int b[1005]; int main() { int n; cin>>n; for (int i = 1;i <= 3*n;i++) { cin>>a[i]; } for (int i = 1;i <= 3*n;i++) { b[a[i]]++; } int mx = b[1]; for (int i = 1;i <= n;i++) { if (mx < b[i]) { mx = b[i]; } } cout<<mx; }