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

public class Main {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String[] first = br.readLine().split(" ", 3);
        int n = Integer.parseInt(first[0]);
        int m = Integer.parseInt(first[1]);
        int q = Integer.parseInt(first[2]);
        HashSet<Bridge> bridges = new HashSet<>();
        for (int i = 0; i < m; i++) {
            bridges.add(new Bridge(br.readLine()));
        }
        Bridge[] events = new Bridge[q];
        for (int i = 0; i < q; i++) {
            events[i] = new Bridge(br.readLine());
            bridges.remove(events[i]);
        }
        UnionFindTree uft = new UnionFindTree(n);
        for (Bridge b : bridges) {
            uft.unite(b);
        }
        int[] results = new int[n];
        HashSet<Integer> now = uft.prepare();
        for (int x : now) {
            results[x] = -1;
        }
        for (int i = q - 1; i >= 0; i--) {
            HashSet<Integer> next = uft.uniteNext(events[i]);
            for (int x : next) {
                results[x] = i + 1;
            }
            next.clear();
        }
        StringBuilder sb = new StringBuilder();
        for (int i = 1; i < n; i++) {
            sb.append(results[i]).append("\n");
        }
        System.out.print(sb);
    }
    
    static class Bridge {
        int left;
        int right;
        
        public Bridge (String arg) {
            String[] arr = arg.split(" ", 2);
            left = Integer.parseInt(arr[0]) - 1;
            right = Integer.parseInt(arr[1]) - 1;
        }
        
        public int hashCode() {
            return left + right;
        }
        
        public boolean equals(Object o) {
            Bridge b = (Bridge)o;
            return b.left == left && b.right == right;
        }
    }
    
    static class UnionFindTree {
        int[] parents;
        HashMap<Integer, HashSet<Integer>> map = new HashMap<>();
        HashSet<Integer> nothing = new HashSet<>();
        public UnionFindTree(int size) {
            parents = new int[size];
            for (int i = 0; i < size; i++) {
                parents[i] = i;
            }
        }
        
        public int find(int x) {
            if (parents[x] == x) {
                return x;
            } else {
                return parents[x] = find(parents[x]);
            }
        }
        
        public void unite(int x, int y) {
            int xx = find(x);
            int yy = find(y);
            if (xx == yy) {
                return;
            }
            int small = Math.min(xx, yy);
            int large = Math.max(xx, yy);
            parents[large] = small;
        }
        
        public void unite(Bridge b) {
            unite(b.left, b.right);
        }
        
        public HashSet<Integer> uniteNext(int x, int y) {
            int xx = find(x);
            int yy = find(y);
            if (xx == yy) {
                return nothing;
            }
            int small = Math.min(xx, yy);
            int large = Math.max(xx, yy);
            parents[large] = small;
            map.get(small).addAll(map.get(large));
            if (small == 0) {
                return map.get(large);
            } else {
                return nothing;
            }
        }
        
        public HashSet<Integer> uniteNext(Bridge b) {
            return uniteNext(b.left, b.right);
        }
        
        public HashSet<Integer> prepare() {
            for (int i = 0; i < parents.length; i++) {
                int x = find(i);
                if (!map.containsKey(x)) {
                    map.put(x, new HashSet<Integer>());
                }
                map.get(x).add(i);
            }
            return map.get(0);
        }
    }
    
}