#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<bitset>
#include<set>
#include<map>
#include<stack>
#include<queue>
#include<deque>
#include<list>
#include<iomanip>
#include<cmath>
#include<cstring>
#include<functional>
#include<cstdio>
#include<cstdlib>
#include<numeric>
#include<ctime>
//#include<atcoder/all>
using namespace std;
//using namespace atcoder;

#define repr(i, a, b) for (int i = (int)(a); i < (int)(b); i++)
#define rep(i, n) repr(i, 0, n)
#define INF 2e9
//#define MOD 1000000007
#define MOD 998244353
#define LINF (long long)4e18
#define jck 3.141592
#define PI acos(-1.0)

const double EPS = 1e-10;

using ll = long long;
using Pi = pair<int,int>;
using Pl = pair<ll,ll>;
//using mint = modint1000000007;

int dh[] = {-1,0,1,0};
int dw[] = {0,1,0,-1};


int main(){
    int n; cin >> n;
    vector<bool> ok(n);
    string ans = "";
    rep(i,n*(n-1)/2){
        int a,b; cin >> a >> b;
        a--; b--;
        string c; cin >> c;
        ok[a] = true;
        ok[b] = true;
        auto f = all_of(ok.begin(),ok.end(),[](auto x){return x == true;});
        if(f){
            if(ans == "") ans = c;
        }
    }
    cout << ans << endl;
}