//乱択解

#include <iostream>
#include <vector>
#include <algorithm>
#include <random>

struct cube{
    int a, b, c;
    bool operator<(const cube&x){
        return a == x.a ? b < x.b : a < x.a;
    }
};

int main(){
    time_t s=clock();
    double lim=CLOCKS_PER_SEC*1.9;
    std::random_device rnd;
    std::mt19937 mt(rnd());
    int N,K,l,ans{0},i,k,j;
    std::cin >> N;
    std::vector<int> A(N), B(N), C(N),dp(N);
    std::vector<cube> vc(N);
    int n{1};
    for(i = 0; i < N; ++i){
        std::cin >> A[i] >> B[i] >> C[i];
        n*=3;
    }
    while(clock()-s<lim){
        K=mt()%n;
        for(i = 0; i < N; ++i){
            l = K % 3;
            if(l == 0) vc[i].a = A[i], vc[i].b = B[i], vc[i].c = C[i];
            if(l == 1) vc[i].a = B[i], vc[i].b = C[i], vc[i].c = A[i];
            if(l == 2) vc[i].a = C[i], vc[i].b = A[i], vc[i].c = B[i];
            if(vc[i].a > vc[i].b) std::swap(vc[i].a, vc[i].b);
            K /= 3;
        }
        sort(vc.begin(),vc.end());
        for(i = 0; i < N; ++i){
            dp[i] = vc[i].c;
            for(j = 0; j < i; ++j){
                if(vc[j].a <= vc[i].a && vc[j].b <= vc[i].b){
                    dp[i] = std::max(dp[i], dp[j] + vc[i].c);
                }
            }
            if(ans < dp[i]) ans = dp[i];
        }
    }
    std::cout << ans << std::endl;
}