#include <bits/stdc++.h>

using namespace std;

const int maxn = 1e3;
int n;
vector<int> graph[maxn];
int len[maxn];
map<string, int> rev;
map<int,string> arev;
bool used[maxn];
map<string, int> ans;

void bfs(int v) {
    len[v] = 0;
    ans[arev[v]]=0;
    used[v]=true;
    queue<int>q;
    q.push(v);
    while (!q.empty()) {
        v = q.front();
        q.pop();
        //cout << "i'm here -> " << arev[v] << '\n';
        for (int i = 0; i < graph[v].size(); ++i) {
            int to = graph[v][i];
            if (!used[to]) {
                used[to]=true;
                q.push(to);
                len[to] = len[v] + 1;
                ans[arev[to]]=len[v]+1;
            }
        }

    }
}


int main() {

    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    cin >> n;
    int j = 1;
    for (int i = 0; i < n; ++i) {
        string a, b, c;
        cin >> a >> b >> c;
        if(rev.find(a)==rev.end()){
            rev[a]=j;
            arev[j]=a;
            j++;
        }
        if (rev.find(b)==rev.end()){
            rev[b]=j;
            arev[j]=b;
            j++;
        }
        if (rev.find(c)==rev.end()){
            rev[c]=j;
            arev[j]=c;
            j++;
        }
        ans[a]=-1;
        ans[b]=-1;
        ans[c]=-1;
        graph[rev[a]].emplace_back(rev[b]);
        graph[rev[a]].emplace_back(rev[c]);
        graph[rev[b]].emplace_back(rev[a]);
        graph[rev[b]].emplace_back(rev[c]);
        graph[rev[c]].emplace_back(rev[a]);
        graph[rev[c]].emplace_back(rev[b]);
    }
    if (rev.find("Isenbaev")!=rev.end()) {
        bfs(rev["Isenbaev"]);
        for (auto elem : ans) {
            if (elem.second == -1) {
                cout << elem.first << " " << "undefined" << '\n';
            } else {
                cout << elem.first << " " << elem.second << '\n';
            }
        }
    }
    else {
        //cout << '\n';
        for (auto elem : ans) {
            if (elem.second == -1) {
                cout << elem.first << " " << "undefined" << '\n';
            } else {
                cout << elem.first << " " << elem.second << '\n';
            }
        }
    }
    return 0;

}