#include <bits/stdc++.h>

using namespace std;

#define fst(t) std::get<0>(t)
#define snd(t) std::get<1>(t)
#define thd(t) std::get<2>(t)

using ll = long long;
using P = std::tuple<int,int>;

const int dx[8] = {-1, 1, 0, 0, -1, -1, 1, 1}, dy[8] = {0, 0, -1, 1, -1, 1, -1, 1};

int N, M, Q;
P bridges[200000], brokenBridges[200000];
bool isBroken[200000];
int res[100000];
std::vector<std::vector<int>> groups;
std::vector<int> members; // group number of each member

void init(int n){
    groups.resize(n);
    members.resize(n);
    
    for(int i=0;i<n;++i){
        groups[i].emplace_back(i);
        members[i] = i;
    }
}

void merge(int u, int v){
    u = members[u];
    v = members[v];
    if(u == v){return;}
    if(groups[u].size() > groups[v].size()){
        std::swap(u, v);
    }

    for(int w : groups[u]){
        members[w] = v;
        // printf("%d, ", w);
    }
    // puts("");
    
    groups[v].insert(groups[v].end(), groups[u].begin(), groups[u].end());
    groups[u].clear();
}

bool same(int u, int v){
    return members[u] == members[v];
}

int main(){
    //*
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);
    /*/
      /*/

    scanf("%d %d %d", &N, &M, &Q);

    init(N);
    
    for(int i=0;i<M;++i){
        scanf("%d %d", &fst(bridges[i]), &snd(bridges[i]));
        --fst(bridges[i]);
        --snd(bridges[i]);
    }

    sort(bridges, bridges+M);

    for(int i=0;i<Q;++i){
        scanf("%d %d", &fst(brokenBridges[i]), &snd(brokenBridges[i]));
        --fst(brokenBridges[i]);
        --snd(brokenBridges[i]);
        
        auto it = lower_bound(bridges, bridges+M, brokenBridges[i]);
        if(it != bridges + M && *it == brokenBridges[i]){
            isBroken[it-bridges] = true;
        }
    }

    for(int i=0;i<M;++i){
        if(!isBroken[i]){
            merge(fst(bridges[i]), snd(bridges[i]));
        }
    }

    for(int i=0;i<M;++i){
        if(same(0, i)){
            res[i] = -1;
        }
    }

    for(int i=Q-1;i>=0;--i){
        int u, v;
        tie(u, v) = brokenBridges[i];

        // printf("Phase: %d, %d, %d\n", i, members[u], members[v]);
        // for(int i=0;i<N;++i){
        //     printf("%d: %d\n", i+1, members[i]);
        // }
        // puts("----");
        // for(int i=0;i<N;++i){
        //     printf("%d: ", i);
        //     for(int w : groups[i]){
        //         printf("%d, ", w + 1);
        //     }
        //     puts("");
        // }
        
        if(!same(0, v)){swap(u, v);}

        if(!same(0, u) && same(0, v)){
            // printf("Added: ");
            for(int w : groups[members[u]]){
                // printf("%d, ", w + 1);
                res[w] = i + 1;
            }
            // puts("");
        }

        // printf("merge: %d, %d\n", u + 1, v + 1);
        merge(u, v);
    }

    for(int i=1;i<N;++i){
        printf("%d\n", res[i]);
    }
}