#include<iostream>
using namespace std;
int dp[4], dp1[4];
int main()
{
	int n, sum[3];
	cin >> n;
	for (int i = 0; i < n; i++)
	{
		int a, b, c;
		cin >> a >> b >> c;
		for (int j = 0; j < 4; j++)
			dp1[j] = 0;
		sum[0] = a+b;
		sum[1] = a+c;
		sum[2] = b+c;

		for (int j = 0; j < 3; j++)
			for (int k = 0; k < 4; k++)
				if ((!i || dp[k]) && dp[k] + sum[j] > dp1[(dp[k] + sum[j])%4])
					dp1[(dp[k] + sum[j])%4] = dp[k] + sum[j];

		for (int j = 0; j < 4; j++)
			dp[j] = dp1[j];
	}

	cout << dp[0];
}