using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Text;
using System.Text.RegularExpressions;
using System.Linq;
using System.IO;
using System.ComponentModel;

class Program
{
    static void Main(string[] args)
    {
        var alice = new Magatro();
        alice.Scan();
        alice.Solve();
    }
}

public class Scanner
{
    private StreamReader Sr;
    private string[] S;
    private int Index;
    private const char Separator = ' ';

    public Scanner() : this(Console.OpenStandardInput())
    {
        Index = 0;
        S = new string[0];
    }
    public Scanner(Stream source)
    {
        Sr = new StreamReader(source);
    }

    private string[] Line()
    {
        return Sr.ReadLine().Split(Separator);
    }

    public string Next()
    {
        string result;
        if (Index >= S.Length)
        {
            S = Line();
            Index = 0;
        }
        result = S[Index];
        Index++;
        return result;
    }
    public T Next<T>()
    {
        var converter = TypeDescriptor.GetConverter(typeof(T));
        return (T)converter.ConvertFromString(Next());

    }
    public int NextInt()
    {
        return int.Parse(Next());
    }
    public double NextDouble()
    {
        return double.Parse(Next());
    }
    public long NextLong()
    {
        return long.Parse(Next());
    }
    public decimal NextDecimal()
    {
        return decimal.Parse(Next());
    }
    public string[] StringArray(int index = 0)
    {
        Next();
        Index = S.Length;
        return S.Skip(index).ToArray();
    }
    public int[] IntArray(int index = 0)
    {
        return StringArray(index).Select(int.Parse).ToArray();
    }
    public long[] LongArray(int index = 0)
    {
        return StringArray(index).Select(long.Parse).ToArray();
    }
    public bool EndOfStream
    {
        get { return Sr.EndOfStream; }
    }
}

public class Magatro
{
    private int N, M, Q;
    private Bridge[] AB, CD;
    private int[] Anser;
    private int[] Par;
    private List<int>[] Group;

    public void Scan()
    {
        Scanner cin = new Scanner();
        N = cin.NextInt();
        M = cin.NextInt();
        Q = cin.NextInt();
        var h = new HashSet<Bridge>();
        CD = new Bridge[Q];
        AB = new Bridge[M];
        for (int i = 0; i < M; i++)
        {
            AB[i] = new Bridge(cin.NextInt() - 1, cin.NextInt() - 1);
        }
        for (int i = 0; i < Q; i++)
        {
            CD[i] = new Bridge(cin.NextInt() - 1, cin.NextInt() - 1);
        }
    }

    private bool Same(int x, int y)
    {
        return Root(x) == Root(y);
    }

    private void Union(int x, int y, int i)
    {
        int rX = Root(x);
        int rY = Root(y);
        if (rX == rY)
        {
            return;
        }
        int rZero = Root(0);
        if (rZero == rX)
        {
            foreach (int j in Group[rY])
            {
                Anser[j] = i;
            }
        }
        else if (rZero == rY)
        {
            foreach (int j in Group[rX])
            {
                Anser[j] = i;
            }
        }
        if (Group[rX].Count < Group[rY].Count)
        {
            Swap(ref rX, ref rY);
        }

        foreach (int j in Group[rY])
        {
            Group[rX].Add(j);
        }
        Par[rY] = rX;
    }



    //かっこつけたかった
    private void Swap(ref int a, ref int b)
    {
        a ^= b;
        b ^= a;
        a ^= b;
    }

    private int Root(int x)
    {
        return Par[x] == x ? x : Root(Par[x]);
    }

    public void Solve()
    {
        AB = AB.Except(CD).ToArray();
        Par = new int[N];
        for (int i = 0; i < N; i++)
        {
            Par[i] = i;
        }
        Group = new List<int>[N];
        for (int i = 0; i < N; i++)
        {
            Group[i] = new List<int>();
            Group[i].Add(i);
        }
        Anser = new int[N];
        foreach (var b in AB)
        {
            Union(b.A, b.B, -1);
        }

        for(int i = Q - 1; i >= 0; i--)
        {
            var b = CD[i];
            Union(b.A, b.B, i + 1);
        }

        for(int i = 1; i < N; i++)
        {
            Console.WriteLine(Anser[i]);
        }
    }

}

struct Bridge
{
    public int A, B;
    public Bridge(int a, int b)
    {
        A = a;
        B = b;
    }
}