// Zende bad Shoma nasime faghat !
#include <bits/stdc++.h>
#pragma GCC target ("avx2")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize("unroll-loops")
#define pb push_back
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define debug(x) cerr << #x << " : " << x << '\n'
using namespace std;
typedef pair<int, int> pii;
const int N = 3e5 + 10;
const int Log = 19;
int n, q, k;
int x[N], t[N], a[N], b[N];
int y[N], c[N], ans[N], cn[N];
vector<int> V;
map<int, int> mp[N];
set<int> rec[N];
vector<int> seg[N << 2];
void Ins(int id, int l, int r, int x, int L, int R){
if(r <= L || R <= l) return ;
if(l <= L && R <= r){
seg[id].pb(x << 2);
//seg[id].insert(x);
return ;
}
int mid = (L + R) >> 1;
Ins(id << 1, l, r, x, L, mid);
Ins(id << 1 | 1, l, r, x, mid, R);
}
void Rem(int id, int l, int r, int x, int L, int R){
if(r <= L || R <= l) return ;
if(l <= L && R <= r){
seg[id].pb((x << 2) | 1);
//seg[id].erase(seg[id].find(x));
return ;
}
int mid = (L + R) >> 1;
Rem(id << 1, l, r, x, L, mid);
Rem(id << 1 | 1, l, r, x, mid, R);
}
int MN, MX, CNT, QN;
void Get(int id, int idx, int L, int R){
seg[id].pb((QN << 2) | 2);
/*CNT += seg[id].size();
if(!seg[id].empty()){
MN = min(MN, *seg[id].begin());
MX = max(MX, *seg[id].rbegin());
}
*/
if(R - L == 1) return ;
int mid = (L + R) >> 1;
if(idx < mid) Get(id << 1, idx, L, mid);
else Get(id << 1 | 1, idx, mid, R);
}
template<typename T>
T Prev(T A){return --A; };
template<typename T>
T Next(T A){return ++A; };
inline pii GetRange(pii R){
return pii(lower_bound(all(V), R.F) - V.begin(), upper_bound(all(V), R.S) - V.begin());
}
inline pii GetRange(int tp, int pl){
set<int>::iterator it = rec[tp].find(pl);
int resL, resR;
if(it == rec[tp].begin()) resL = 1;
else resL = ( (*Prev(it)) + (*it)) / 2 + 1;
if(Next(it) == rec[tp].end()) resR = 1e8;
else resR = ( (*Next(it)) + (*it)) / 2;
return pii(resL, resR);
}
int SegGet(int qn){
QN = qn;
int pl = y[qn];
MN = 1e8 + 1;
MX = 0;
CNT = 0;
Get(1, lower_bound(all(V), pl) - V.begin(), 0, V.size());
if(CNT != k) return -1;
return max(MX - pl, pl - MN);
}
void SegRem(int tp, int pl){
pii ran = GetRange(GetRange(tp, pl));
Rem(1, ran.F, ran.S, pl, 0, V.size());
}
void SegAdd(int tp, int pl){
pii ran = GetRange(GetRange(tp, pl));
Ins(1, ran.F, ran.S, pl, 0, V.size());
}
void Add(int tp, int pl){
//cerr << "+ " << tp << ' ' << pl << '\n';
mp[tp][pl] ++;
if(mp[tp][pl] > 1) return ;
auto it = rec[tp].lower_bound(pl);
int nx = -1, la = -1;
if(it != rec[tp].end()) nx = *it;
if(it != rec[tp].begin()) la = *Prev(it);
if(nx != -1) SegRem(tp, nx);
if(la != -1) SegRem(tp, la);
rec[tp].insert(pl);
if(nx != -1) SegAdd(tp, nx);
if(la != -1) SegAdd(tp, la);
SegAdd(tp, pl);
}
void Erase(int tp, int pl){
//cerr << "- " << tp << ' ' << pl << '\n';
mp[tp][pl] --;
if(mp[tp][pl] > 0) return ;
auto it = rec[tp].find(pl);
int nx = -1, la = -1;
if(Next(it) != rec[tp].end()) nx = *Next(it);
if(it != rec[tp].begin()) la = *Prev(it);
if(nx != -1) SegRem(tp, nx);
if(la != -1) SegRem(tp, la);
SegRem(tp, pl);
rec[tp].erase(pl);
if(nx != -1) SegAdd(tp, nx);
if(la != -1) SegAdd(tp, la);
}
vector<int> Ea[N], Er[N], Eq[N];
int fen[N];
void AddFen(int idx, int d){
for(; idx < N; idx += (idx & -idx))
fen[idx] += d;
}
int GetFen(int idx){
int res = 0;
for(; idx; idx -= (idx & -idx))
res += fen[idx];
return res;
}
int main(){
ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n >> k >> q;
for(int i = 1; i <= n; i++){
cin >> x[i] >> t[i] >> a[i] >> b[i];
b[i] ++;
V.pb(a[i]); V.pb(b[i]);
}
for(int i = 1; i <= q; i++){
cin >> y[i] >> c[i];
}
sort(all(V)); V.resize(unique(all(V)) - V.begin());
int AllT = V.size();
assert(V.size() < N);
for(int i = 1; i <= n; i++){
a[i] = lower_bound(all(V), a[i]) - V.begin();
b[i] = lower_bound(all(V), b[i]) - V.begin();
Ea[a[i]].pb(i);
Er[b[i]].pb(i);
//cerr << "!!! " << a[i] << ' ' << b[i] << '\n';
}
for(int i = 1; i <= q; i++){
if(c[i] < V[0]){
ans[i] = -1;
continue;
}
c[i] = (upper_bound(all(V), c[i]) - V.begin() ) - 1;
Eq[c[i]].pb(i);
//cerr << "? " << c[i] << '\n';
}
V.clear();
//for(int i = 1; i <= n; i++) V.pb(x[i]);
for(int i = 1; i <= q; i++) V.pb(y[i]);
sort(all(V)); V.resize(unique(all(V)) - V.begin());
for(int tm = 0; tm < AllT; tm++){
for(auto i : Er[tm])
Erase(t[i], x[i]);
for(auto i : Ea[tm])
Add(t[i], x[i]);
for(auto i : Eq[tm])
ans[i] = SegGet(i);
//cerr << '\n';
}
V.clear();
V.pb(-1);
for(int i = 1; i <= n; i++) V.pb(x[i]);
//for(int i = 1; i <= q; i++) V.pb(y[i]);
sort(all(V)); V.resize(unique(all(V)) - V.begin());
int et, val;
for(int i = 0; i < 4*N; i++){
if(seg[i].empty()) continue;
//cerr << "# " << i << '\n';
for(auto &ev : seg[i]){
val = ev >> 2;
et = ev & 3;
//cerr << "! " << val << ' ' << et << '\n';
if(et == 0){
AddFen(lower_bound(all(V), val) - V.begin(), 1);
continue;
}
if(et == 1){
AddFen(lower_bound(all(V), val) - V.begin(), -1);
continue;
}
int sm = GetFen(N - 1);
if(sm == 0) continue;
cn[val] += sm;
int mn = 0;
for(int j = 1 << (Log - 1); j ; j >>= 1){
if((mn | j) < N && fen[mn | j] == 0) mn |= j;
}
mn = V[mn + 1];
ans[val] = max(ans[val], y[val] - mn);
int mx = 0;
for(int j = 1 << (Log - 1); j ; j >>= 1){
if((mx | j) < N && fen[mx | j] < sm){
mx |= j;
sm -= fen[mx];
}
}
mx = V[mx + 1];
ans[val] = max(ans[val], mx - y[val]);
}
}
//for(int i = 1; i <= q; i++) cerr << cn[i] << '\n';
for(int i = 1; i <= q; i++) cout << (cn[i] == k ? ans[i] : -1) << '\n';
return 0;
}
/*
4 2 4
3 1 1 10
9 2 2 4
7 2 5 7
4 1 8 10
5 3
5 6
5 9
1 10
2 1 3
1 1 1 4
1 1 2 6
1 3
1 5
1 7
1 1 1
100000000 1 1 1
1 1
*/
