#include <bits/stdc++.h>

using namespace std;

using ld = long double;
using ll = long long;
void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifndef ONLINE_JUDGE
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif

const int INF = 1e7;

struct Point {
	int x, y, id; // jak id < 0 tzn, że jestem pałągiem
};

ll scalar(Point a, Point b) {
	return a.x * 1LL * b.x + a.y * 1LL * b.y;
}

double len(Point a) {
	return sqrt(scalar(a, a));
}

ll det(Point a, Point b) {
	return a.x * 1LL *  b.y - a.y * 1LL * b.x;
}

ld dl_rzutu_a_na_b(Point a, Point b) {
	return (ld)scalar(a, b) / len(b);
}

int32_t main() {
	ios_base::sync_with_stdio(false), cout.tie(0), cin.tie(0);

	int R, F, N;	cin >> R >> F >> N;
	vector<ld> radii(R + 2, 0);
	for (int i = 1; i <= R; i++) {
		cin >> radii[i];
	}
	radii[R + 1] = INF;
	sort(begin(radii), end(radii));
	vector<Point> all_pts(F + N), pts(N), paly(F);
	for (int i = 0; i < F; i++) {
		int fx, fy;	cin >> fx >> fy;
		all_pts[i] = {fx, fy, -(i + 1)};
		paly[i] = all_pts[i];
	}
	for (int i = 0; i < N; i++) {
		int x, y;	cin >> x >> y;
		all_pts[i + F] = {x, y, (i + 1)};
		pts[i] = all_pts[i + F];
	}
	auto pom = [&](Point p) {
		if (p.x >= 0 && p.y == 0) return 0; // na prawej półprostej
		if (p.y > 0) return 1; // na górnym półokregu
		if (p.x < 0 && p.y == 0) return 2; // na lewej półprostej
		return 3; // na dole
	};
	int pom_a, pom_b; // zmienne pomocnicze
	auto cmp = [&](Point a, Point b) {
		pom_a = pom(a), pom_b = pom(b);
		if (pom_a != pom_b) return pom_a < pom_b;
		if (det(a, b) == 0) return a.id < b.id; // lz więc porównuję id
		return det(a, b) >= 0; 
	};
	sort(all_pts.begin(), all_pts.end(), cmp);

	vector<int> Left(N), Right(N);

	int M = N + F;

	int it = 0;

	while (all_pts[it].id > 0) it = (it - 1 + M) % M;
	int pre_left = all_pts[it].id;
	for (int i = 0; i < F + N; i++) {
		if (all_pts[i].id < 0) pre_left = all_pts[i].id;
		else {
			Left[all_pts[i].id - 1] = pre_left;
		}
	}

	it = M - 1;

	while (all_pts[it].id > 0) it = (it + 1) % M;
	int pre_right = all_pts[it].id;

	for (int i = F + N - 1; i >= 0; i--) {
		if (all_pts[i].id < 0) pre_right = all_pts[i].id;
		else {
			Right[all_pts[i].id - 1] = pre_right;
		}
	}
	cout << fixed << setprecision(15);
	auto cur_mini = [&](int i, int idx) {
		ld mini = INF;
		ld rzut = dl_rzutu_a_na_b(pts[i], paly[idx]);
		it = int(upper_bound(begin(radii), end(radii), rzut) - begin(radii));
		if(it > 0 && it < R+1) {
			ld r = radii[it];
			ld norma = sqrt((ld)paly[idx].x*paly[idx].x+(ld)paly[idx].y*paly[idx].y);
			ld ax = (ld)paly[idx].x*r/norma;
			ld ay = (ld)paly[idx].y*r/norma;
			mini = min(mini, sqrt((ax-pts[i].x)*(ax-pts[i].x)+(ay-pts[i].y)*(ay-pts[i].y) ));
		}
		it--;
		if(it > 0 && it < R+1) {
			ld r = radii[it];
			ld norma = sqrt((ld)paly[idx].x*paly[idx].x+(ld)paly[idx].y*paly[idx].y);
			ld ax = (ld)paly[idx].x*r/norma;
			ld ay = (ld)paly[idx].y*r/norma;
			mini = min(mini, sqrt((ax-pts[i].x)*(ax-pts[i].x)+(ay-pts[i].y)*(ay-pts[i].y) ));
		}
		return mini;
	};
	for (int i = 0; i < N; i++) {
		if(pts[i].x == 0 && pts[i].y == 0) {
			cout << radii[1] << "\n";
		}
		ld mini = cur_mini(i, -Left[i]-1);
		ld mini2 = cur_mini(i, -Right[i]-1);
		cout << min(mini, mini2) << "\n";
	}


	return 0;
}