#include <iostream>
using namespace std;

struct Member {
    int A;  // Member ID
    int B;  // Left link
    int C;  // Right link
};

int main() {
    int N;
    cin >> N;

    if (N < 0) {
        cout << "Invalid input" << endl;
        return 0;
    }

    Member family[1000];  // Array of members (max 1000)

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

    int K;
    cin >> K;

    bool found = false;
    for (int i = 0; i < N; i++) {
        if (family[i].A == K) {
            found = true;
            break;
        }
    }

    if (found)
        cout << "Found" << endl;
    else
        cout << "Not Found" << endl;

    return 0;
}