#include <bits/stdc++.h>

struct Edge {
    int v;
};
using AdjList = std::vector<std::vector<Edge>>;

std::vector<int> toposort(const AdjList& G) {
    const int N = G.size();
    std::vector<int> indeg(N);
    for (int u = 0; u < N; ++u)
        for (auto&& e : G[u]) ++indeg[e.v];
    std::vector<int> ord;
    ord.reserve(N);
    std::queue<int> q;
    for (int u = 0; u < N; ++u)
        if (!indeg[u]) q.push(u);
    while (!q.empty()) {
        int u = q.front();
        q.pop();
        ord.push_back(u);
        for (auto&& e : G[u])
            if (!--indeg[e.v]) q.push(e.v);
    }
    return ord;
}

using namespace std;
int main() {
    ios::sync_with_stdio(false), cin.tie(0);
    int N;
    cin >> N;
    AdjList G(N);
    for (int u = 0, v; u < N; ++u)
        while (cin >> v, v) G[u].emplace_back(Edge{v - 1});
    auto topo = toposort(G);
    for (int u : topo) cout << u + 1 << ' ';
    return 0;
}