#include <stdio.h>
#define N 300000
#define Q 300000
#define N_ (1 << 19) /* N_ = pow2(ceil(log2(Q))) */
#define INF 0x3f3f3f3f
int min(int a, int b) { return a < b ? a : b; }
int max(int a, int b) { return a > b ? a : b; }
unsigned int X = 12345;
int rand_() {
return (X *= 3) >> 1;
}
int xx[N], gg[N], tt[N * 2 + Q], n;
int yy[Q], q;
int compare1(int h1, int h2) {
int type1, type2;
if (tt[h1] != tt[h2])
return tt[h1] - tt[h2];
type1 = h1 < n * 2 ? ((h1 & 1) == 0 ? 1 : -1) : 0;
type2 = h2 < n * 2 ? ((h2 & 1) == 0 ? 1 : -1) : 0;
return type2 - type1;
}
int compare2(int h1, int h2) {
return yy[h1] - yy[h2];
}
int compare3(int i, int j) {
return gg[i] != gg[j] ? gg[i] - gg[j] : xx[i] - xx[j];
}
int (*compare)(int, int);
void sort(int *hh, int l, int r) {
while (l < r) {
int i = l, j = l, k = r, h = hh[l + rand_() % (r - l)], tmp;
while (j < k) {
int c = compare(hh[j], h);
if (c == 0)
j++;
else if (c < 0) {
tmp = hh[i], hh[i] = hh[j], hh[j] = tmp;
i++, j++;
} else {
k--;
tmp = hh[j], hh[j] = hh[k], hh[k] = tmp;
}
}
sort(hh, l, i);
l = k;
}
}
int zz[1 + N], ll[1 + N], rr[1 + N], ii_[1 + N], u_, l_, r_;
int node(int i) {
static int _ = 1;
zz[_] = rand_();
ii_[_] = i;
return _++;
}
void split(int u, int i) {
int c;
if (u == 0) {
u_ = l_ = r_ = 0;
return;
}
c = xx[ii_[u]] != xx[i] ? xx[ii_[u]] - xx[i] : ii_[u] - i;
if (c < 0) {
split(rr[u], i);
rr[u] = l_, l_ = u;
} else if (c > 0) {
split(ll[u], i);
ll[u] = r_, r_ = u;
} else {
u_ = u, l_ = ll[u], r_ = rr[u];
ll[u] = rr[u] = 0;
}
}
int merge(int u, int v) {
if (u == 0)
return v;
if (v == 0)
return u;
if (zz[u] < zz[v]) {
rr[u] = merge(rr[u], v);
return u;
} else {
ll[v] = merge(u, ll[v]);
return v;
}
}
int tr_update(int u, int i) {
split(u, i);
return merge(merge(l_, u_ == 0 ? node(i) : 0), r_);
}
int tr_query(int u, int x) {
int d;
d = INF;
while (u)
if (xx[ii_[u]] < x)
d = min(d, x - xx[ii_[u]]), u = rr[u];
else
d = min(d, xx[ii_[u]] - x), u = ll[u];
return d;
}
int hh[N * 2 + Q];
int search(int x) {
int lower = -1, upper = q;
while (upper - lower > 1) {
int h = (lower + upper) / 2;
if (yy[hh[h]] * 2 <= x)
lower = h;
else
upper = h;
}
return lower;
}
int stmn[N_ * 2], stmx[N_ * 2], n_;
void build() {
int i;
n_ = 1;
while (n_ < q)
n_ <<= 1;
for (i = 1; i < n_ * 2; i++)
stmn[i] = INF, stmx[i] = -INF;
}
void update(int l, int r, int x) {
for (l += n_, r += n_; l <= r; l >>= 1, r >>= 1) {
if ((l & 1) == 1)
stmn[l] = min(stmn[l], x), stmx[l] = max(stmx[l], x), l++;
if ((r & 1) == 0)
stmn[r] = min(stmn[r], x), stmx[r] = max(stmx[r], x), r--;
}
}
int query(int i) {
int y, l, r;
l = r = y = yy[hh[i]];
for (i += n_; i > 0; i >>= 1)
l = min(l, stmn[i]), r = max(r, stmx[i]);
return max(y - l, r - y);
}
int main() {
static int ll_[N], rr_[N], ii[N], tr[N], ans[Q];
int k, g, h, i;
scanf("%d%d%d", &n, &k, &q);
for (i = 0; i < n; i++)
scanf("%d%d%d%d", &xx[i], &gg[i], &tt[i << 1 | 0], &tt[i << 1 | 1]), gg[i]--;
for (h = 0; h < q; h++)
scanf("%d%d", &yy[h], &tt[n * 2 + h]);
if (k <= 400) {
for (h = 0; h < n * 2 + q; h++)
hh[h] = h;
compare = compare1, sort(hh, 0, n * 2 + q);
for (h = 0; h < n * 2 + q; h++) {
int h_ = hh[h];
if (h_ >= n * 2) {
h_ -= n * 2;
for (g = 0; g < k; g++)
ans[h_] = max(ans[h_], tr_query(tr[g], yy[h_]));
if (ans[h_] == INF)
ans[h_] = -1;
} else {
i = h_ >> 1;
tr[gg[i]] = tr_update(tr[gg[i]], i);
}
}
} else {
for (h = 0; h < q; h++)
hh[h] = h;
compare = compare2, sort(hh, 0, q);
for (i = 0; i < n; i++)
ii[i] = i;
compare = compare3, sort(ii, 0, n);
ll_[0] = 0, rr_[n - 1] = q - 1;
for (h = 0; h + 1 < n; h++)
if (gg[ii[h]] == gg[ii[h + 1]]) {
int h_ = search(xx[ii[h]] + xx[ii[h + 1]]);
rr_[h] = h_, ll_[h + 1] = h_ + 1;
} else
rr_[h] = q - 1, ll_[h + 1] = 0;
build();
for (h = 0; h < n; h++)
if (ll_[h] <= rr_[h])
update(ll_[h], rr_[h], xx[ii[h]]);
for (h = 0; h < q; h++)
ans[hh[h]] = query(h);
}
for (h = 0; h < q; h++)
printf("%d\n", ans[h]);
return 0;
}
