//#pragma GCC optimize("Ofast,O3")
//#pragma GCC target("avx,avx2")
#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "debugger.cpp"
#else
#define debug(...)
#endif
template<class T>
int len(T &a){
return a.size();
}
using ll = long long;
using pii = pair<int,int>;
#define all(a) (a).begin(), (a).end()
#define ff first
#define ss second
string fileio = "";
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
const int MOD = 1e9 + 7;
const int inf = 1e9;
const ll infl = 1e18;
const int maxn = 1e5 + 1;
struct DSU_roll_back{
int n;
vector<int> p;
vector<int> sz;
vector<int> d;
vector<pair<int &, int>> his;
int bip = 1;
DSU_roll_back (int n) : n(n), p(n), sz(n), d(n){
for(int i = 0; i < n;i ++) p[i] = i, sz[i] = 1;
}
int get(int x, int &col){
col ^= d[x];
return p[x] == x ? x : get(p[x], col);
}
void unite(int a, int b){
if(bip == 0){
return;
}
int ca = 0, cb = 0;
a = get(a, ca), b = get(b, cb);
if(a == b){
if(ca == cb){
his.push_back({bip, bip});
bip = 0;
}
return;
}
if(sz[a] < sz[b]) swap(a, b);
his.push_back({sz[a], sz[a]});
his.push_back({p[b], p[b]});
his.push_back({d[b], d[b]});
d[b] = ca == cb;
sz[a] += sz[b];
p[b] = a;
}
int snap(){
return his.size();
}
void roll_back(int until){
while(len(his) > until){
his.back().ff = his.back().ss;
his.pop_back();
}
}
};
void solve(){
int n, m, q; cin >> n >> m >> q;
vector<int> a(m + 1), b(m + 1);
for(int i = 1; i <= m; i ++){
cin >> a[i] >> b[i]; a[i] --; b[i] --;
}
vector<vector<pair<int,int>>> qu(m + 1);
for(int i = 0; i < q; i++){
int l, r; cin >> l >> r;
qu[l].push_back({r, i});
}
DSU_roll_back ds(n);
vector<int> ans(q);
for(int i = 1; i <= m; i ++){
if(len(qu[i])){
int sz = ds.snap();
int r = m;
while(ds.bip && r >= i){
ds.unite(a[r], b[r]);
r --;
}
for(auto [rig, j] : qu[i]){
ans[j] = rig <= r;
}
debug(i, r);
ds.roll_back(sz);
}
ds.unite(a[i], b[i]);
}
for(auto u : ans) cout << (u ? "YES" : "NO") << '\n';
}
int main(){
ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
auto start = chrono::high_resolution_clock::now();
#ifndef LOCAL
if(fileio.size()){
freopen((fileio + ".in").c_str(), "r", stdin);
freopen((fileio + ".out").c_str(), "w", stdout);
}
#endif
int testcases = 1;
#ifdef Tests
cin >> testcases;
#endif
while(testcases --){
solve();
if(testcases) cout << '\n';
#ifdef LOCAL
else cout << '\n';
cout << "_________________________" << endl;
#endif
}
#ifdef LOCAL
auto duration = chrono::duration_cast<chrono::microseconds>(chrono::high_resolution_clock::now() - start);
cout << "time: " << (double)duration.count()/1000.0 << " milliseconds" << endl;
#endif
return 0;
}
