#include <bits/stdc++.h>

using namespace std;

int dp[1 << 16][50][50];
set <int> S;
map <int, int> memo;
int N;
int A[16];
int B[16];
int C[16];

int main(void)
{
	cin.tie(0);
	ios::sync_with_stdio(false);
	
	cin >> N;

	for (int i = 0; i < N; i++)
	{
		cin >> A[i] >> B[i] >> C[i];
		S.insert(A[i]);
		S.insert(B[i]);
		S.insert(C[i]);
	}

	int num = 0;

	for (auto it : S)
	{
		memo[it] = num++;
	}

	for (int i = 0; i < N; i++)
	{
		int a = memo[A[i]];
		int b = memo[B[i]];
		int c = memo[C[i]];

		dp[(1 << i)][a][b] = max(dp[(1 << i)][a][b], C[i]);
		dp[(1 << i)][b][a] = max(dp[(1 << i)][b][a], C[i]);
		dp[(1 << i)][a][c] = max(dp[(1 << i)][a][c], B[i]);
		dp[(1 << i)][c][a] = max(dp[(1 << i)][c][a], B[i]);
		dp[(1 << i)][b][c] = max(dp[(1 << i)][b][c], A[i]);
		dp[(1 << i)][c][b] = max(dp[(1 << i)][c][b], A[i]);
	}

	for (int i = 1; i < (1 << N); i++)
	{
		for (int j = 0; j < num; j++)
		{
			for (int k = 0; k < num; k++)
			{
				for (int x = 0; x < N; x++)
				{
					if ((i & (1 << x)) == 0)
					{
						int bitmask = i + (1 << x);
						int a = memo[A[x]];
						int b = memo[B[x]];
						int c = memo[C[x]];
						if (a <= j && b <= k)
						{
							dp[bitmask][a][b] = max(dp[bitmask][a][b], dp[i][j][k] + C[x]);
						}
						if (a <= k && b <= j)
						{
							dp[bitmask][b][a] = max(dp[bitmask][b][a], dp[i][j][k] + C[x]);
						}
						if (b <= j && c <= k)
						{
							dp[bitmask][b][c] = max(dp[bitmask][b][c], dp[i][j][k] + A[x]);
						}
						if (b <= k && c <= j)
						{
							dp[bitmask][c][b] = max(dp[bitmask][c][b], dp[i][j][k] + A[x]);
						}
						if (a <= j && c <= k)
						{
							dp[bitmask][a][c] = max(dp[bitmask][a][c], dp[i][j][k] + B[x]);
						}
						if (a <= k && c <= j)
						{
							dp[bitmask][c][a] = max(dp[bitmask][c][a], dp[i][j][k] + B[x]);
						}
					}
				}
			}
		}
	}
	
	int res = 0;

	for (int i = 0; i < (1 << N); i++)
	{
		for (int j = 0; j < num; j++)
		{
			for (int k = 0; k < num; k++)
			{
				res = max(res, dp[i][j][k]);
			}
		}
	}

	cout << res << '\n';

	return 0;
}