#include <bits/stdc++.h>
using namespace std;
#define int long long
#ifdef LOCAL
void debug_out() {cerr<<endl;}
template <typename Head, typename... Tail>
void debug_out(Head _H, Tail... _T) {cerr<<" "<<to_string(_H);debug_out(_T...);}
#define debug(...) cerr<<"["<<#__VA_ARGS__<<"]:",debug_out(__VA_ARGS__)
#else
#define debug(...)
#endif
const int MAXN = 200005;
const int inf=1000000500ll;
const long long oo =1000000000000000500ll;
const int MOD = (int)1e9 + 7;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
typedef pair<int,int> pi;
int n,m,q;
pi E[MAXN];
int ans[MAXN];//suppose [1,i] is blocked, what is the minimum r such that the answer is yes?
struct ufds_{
vector<array<int,4>> rb;
pi par[MAXN];
int sz[MAXN];
bool bad=0;
ufds_(){
fill(sz,sz+MAXN,1);
for(int i=0;i<MAXN;i++){
par[i]=pi(i,0);
}
}
pi find(int x){ // NO PATH COMPRESSION IN ROLLBACKS!!!
int OFF=0;
while(par[x].first != x){
OFF^=par[x].second;
x=par[x].first;
}
return make_pair(x,OFF);
}
void merge(int x, int y){
pi px=find(x);
pi py=find(y);
if(px.first == py.first){//same component
if((px.second ^ py.second)== 0){ // not bipartite!
rb.push_back({-1,bad,0,0});
bad=1;
return;
} else{
return;
}
}
if(sz[px.first]<sz[py.first]){ // sz[x]>=sz[y]
swap(px,py);
swap(x,y);
}
rb.push_back({px.first,par[px.first].first,par[px.first].second,sz[px.first]});
sz[px.first] += sz[py.first];
rb.push_back({py.first,par[py.first].first,par[py.first].second,sz[py.first]});
par[py.first].first = px.first;
par[py.first].second = 1^px.second^py.second;
}
void rollback(int ss){
while(rb.size() > ss){
array<int,4>cur=rb.back();
if(cur[0]==-1){
bad=cur[1];
rb.pop_back();
} else{
par[cur[0]].first=cur[1];
par[cur[0]].second=cur[2];
sz[cur[0]]=cur[3];
rb.pop_back();
}
}
}
}ufds;
void dnc(int s, int e, int optl, int optr){
if(s>e)return;
int mi=(s+e)/2;
// block all of [s,mi-1]
int sz1=ufds.rb.size();
bool done=0;
for(int i=s;i<=mi-1;i++){
ufds.merge(E[i].first,E[i].second);
}
int sz2=ufds.rb.size();
for(int i=optr;i>=optl;i--){
ufds.merge(E[i].first,E[i].second);
if(ufds.bad){
ans[mi]=i;
break;
}
}
ufds.rollback(sz2);
dnc(mi+1,e,ans[mi],optr);
ufds.rollback(sz1);
int rr=ufds.rb.size();
for(int i=optr;i>=ans[mi];i--){
ufds.merge(E[i].first,E[i].second);
}
dnc(s,mi-1,optl,ans[mi]);
ufds.rollback(rr);
}
int32_t main()
{
ios_base::sync_with_stdio(0); cin.tie(0);
cin >> n >> m >> q;
for(int i=1;i<=m;i++){
cin >> E[i].first >> E[i].second;
}
E[m+1].first=0;
E[m+1].second=1;
dnc(1,m,1,m+1);
while(q--){
int l,r;cin>>l>>r;
if(r<ans[l]){
cout<<"YES\n";
} else{
cout<<"NO\n";
}
}
}
