#include <bits/stdc++.h>
#define rep(i, a, n) for(int i = a; i < n; i++)
#define int long long
using namespace std;
typedef pair<int, int> P;
const int mod = 1000000007;
const int INF = 1e18;

signed main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int n;
    cin >> n;
    map<int, int> mp;
    rep(i, 0, n){
        int k, l, d;
        cin >> k >> l >> d;
        int now = l;
        rep(j, 0, k){
            mp[now]++;
            now += (1LL << d);
        }
    }
    for(auto i : mp){
        if(i.second % 2){
            cout << i.first << endl;
            return 0;
        }
    }
}