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1 6
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1 3
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2 10 3
2 3 5
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2 1 7
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1 9
1 10
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1 2
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4 7
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1 2
1 3
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1 6
1 4
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2 10 5
1 4
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1 4
1 4
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1 7
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2 9 3
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1 2
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2 1 7
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2 7 4
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2 3 6
2 8 6
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1 3
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1 2
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 100 22 4
100 24
100 27
100 4
100 60
24 63
63 17
27 89
17 71
63 77
77 43
63 9
100 65
24 14
27 15
60 10
71 16
100 67
10 1
1 40
10 83
43 66
67 18
1 6
1 27
1 6
1 49
 10 7 48
1 2
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7 8
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1 7
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2 1 9
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2 6 1
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2 5 5
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1 5
2 8 7
1 9
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1 9
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2 3 3
1 9
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 10 4 4
1 2
1 3
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1 5
1 2
1 3
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 10 7 7
1 2
1 3
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4 6
5 7
3 8
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1 8
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 10 5 10
1 2
1 3
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1 3
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1 8
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 10 1 14
1 2
1 1
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2 2 5
1 9
1 6
2 10 9
2 4 8
1 4
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2 2 4
1 10
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2 7 4
 100 10 30
58 81
58 7
58 74
74 97
81 56
81 15
15 49
97 45
97 47
58 34
2 52 44
2 55 79
2 52 5
1 48
2 60 35
2 37 82
2 77 52
2 9 23
2 25 61
2 63 34
1 81
2 47 20
1 79
2 34 19
1 70
1 36
2 27 85
2 52 89
1 25
2 46 46
1 52
1 33
1 70
2 29 56
2 3 73
2 37 46
2 29 83
1 1
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 10 8 43
1 2
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7 8
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1 9
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 10 3 11
1 2
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2 3 2
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1 7
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 10 5 6
1 2
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1 2
2 3
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3 5
1 6
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1 1
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1 7
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 100 16 46
36 42
36 50
42 54
42 74
50 58
42 16
50 81
50 96
42 62
54 2
74 75
74 22
2 48
50 95
74 66
75 5
1 62
1 56
2 6 68
1 47
1 43
1 38
1 75
2 22 82
2 56 77
1 71
2 52 15
2 9 1
2 12 59
1 24
2 41 94
2 18 58
2 22 67
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2 68 70
1 81
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2 76 28
2 31 73
2 58 80
2 100 57
2 88 79
1 30
2 96 23
2 92 44
1 12
1 66
1 24
2 71 68
2 4 4
2 84 43
2 80 15
2 54 13
1 51
2 99 17
1 63
2 12 41
2 1 2
2 62 96
2 79 9
2 59 79
 10 1 9
1 2
1 5
2 7 4
1 4
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2 2 5
2 6 3
1 3
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1 2
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1 3
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1 8
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1 9
1 8
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1 10
1 4
1 4
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1 2
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2 8 5
 10 4 46
1 2
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1 1
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1 8
1 3
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2 2 2
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1 3
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1 9
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1 2
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1 2
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1 3
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1 7

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import java.io.*;
import java.util.*;

public class Main{

	static ArrayList<Integer>[] list;
	static DisjointSet set;
	static int[] degree;

	public static void main(String[] args){
		Scan scan = new Scan();
		int n = scan.nextInt();
		int m = scan.nextInt();
		int q = scan.nextInt();
		list = new ArrayList[n];
		for(int i=0;i<n;i++) list[i] = new ArrayList<Integer>();
		degree = new int[n];
		set = new DisjointSet(n);
		for(int i=0;i<m;i++){
			int a = scan.nextInt()-1;
			int b = scan.nextInt()-1;
			degree[a]++;
			degree[b]++;
			list[a].add(b);
			list[b].add(a);
			set.union(a,b, false);
		}

		initialize(n);

//		for(int i=0;i<n;i++) System.out.println((i+1)+" : "+set.dset[i]);

		StringBuilder sb = new StringBuilder(500000);
		for(int i=0;i<q;i++){
			int type = scan.nextInt();
			if(type == 1){
//				System.out.println(-1*set.dset[set.find(scan.nextInt()-1)] - 1);
				sb.append((-set.dset[set.find(scan.nextInt()-1)] - 1)+"\n");
			}
			if(type == 2){
				set.union(scan.nextInt()-1, scan.nextInt()-1, true);
			}
			if(i%100000 == 0){
				System.out.println(sb);
				sb = new StringBuilder(500000);
			}
		}
		System.out.println(sb);
	}

	static void initialize(int n){
		boolean[] dead = new boolean[n];
		Queue<Integer> qNow = new ArrayDeque<Integer>();
		Queue<Integer> qNext = new ArrayDeque<Integer>();
		for(int i=0;i<n;i++){
			if(degree[i] == 1) qNow.add(i);
		}

		int depth = 0;
		while(!qNow.isEmpty()){
			depth++;
			while(!qNow.isEmpty()){
				int now = qNow.poll();
				dead[now] = true;
//				System.out.println((now+1)+" is depth "+depth+", degree "+degree[now]);
				if(degree[now] == 0) set.dset[set.find(now)] = -(depth<<1) + 1;
//				if(degree[now] == -1) set.dset[set.find(now)]++;
				for(Integer o : list[now]){
					int next = o;
					if(dead[next]) set.dset[set.find(now)]--;
					if(--degree[next] == 1) qNext.add(next);
				}
			}
			Queue<Integer> temp = qNow;
			temp.clear();
			qNow = qNext;
			qNext = temp;
			dead = new boolean[n];
		}
	}

	static class DisjointSet{

		int[] dset;

		DisjointSet(int n){
			dset = new int[n];
			Arrays.fill(dset, -1);
		}

		int find(int x){
			if(dset[x] < 0) return x;
			return dset[x] = find(dset[x]);
		}

		void union(int a, int b, boolean maintain){
			int rootA = find(a);
			int rootB = find(b);
			if(rootA == rootB) return;
			if(maintain){
				int original = (dset[rootA]<dset[rootB]) ? dset[rootA] : dset[rootB];
				int merge = -(((-dset[rootA])>>1)+((-dset[rootB])>>1)+2);
				dset[rootA] = original<merge ? original : merge;
			}
			dset[rootB] = rootA;
//			System.out.println((a+1)+" + "+(b+1)+" = " + ((-dset[rootA])) );
		}
	}

}


class Scan implements Iterator<String>{

	BufferedReader buffer;
	StringTokenizer tok;

	Scan(){
		buffer = new BufferedReader(new InputStreamReader(System.in));
	}


	@Override
	public boolean hasNext(){
		while(tok==null || !tok.hasMoreElements()){
			try{
				tok = new StringTokenizer(buffer.readLine());
			}catch(Exception e){
				return false;
			}
		}
		return true;
	}

	@Override
	public String next(){
		if(hasNext()) return tok.nextToken();
		return null;
	}

	@Override
	public void remove(){
		throw new UnsupportedOperationException();
	}

	int nextInt(){
		return Integer.parseInt(next());
	}

	String nextLine(){
		if(hasNext()) return tok.nextToken("\n");
		return null;
	}
}