Problem: A rich man has a square room with mirrors for security or just for fun. Each side of the room is eight meters wide. The floor, the ceiling and the walls are not special; however, the room can be equipped with a lot of mirrors on the walls or as vertical partitions.

Every mirror is one meter wide, as tall as the wall, double-side, perfectly reflective, and ultimately thin.

Poles to fix mirrors are located at the corners of the room, on the walls and inside the room. Their locations are the 81 lattice points at intervals of one meter. A mirror can be fixed between two poles which are one meter distant from each other. If we use the sign "+" to represent a pole, the overview of the room can be illustrated as follows.

<image>

Let us denote a location on the floor by (x,y) in a rectangular coordinate system. For example, the rectangular coordinates of the four corners of the room are (0,0), (8,0), (0,8) and (8,8), respectively. The location (x,y) is in the room if and only if the conditions 0 ≤ x ≤ 8 and 0 ≤ y ≤ 8 are satisfied. If i and j are integers satisfying the conditions 0 ≤ i ≤ 8 and 0 ≤ j ≤ 8, we can denote by (i,j) the locations of poles.

One day a thief intruded into this room possibly by breaking the ceiling. He stood at (0.75,0.25) and looked almost toward the center of the room. Precisely speaking, he looked toward the point (1, 0.5) of the same height as his eyes. So what did he see in the center of his sight? He would have seen one of the walls or himself as follows.

* If there existed no mirror, he saw the wall at (8, 7.5)
* If there existed one mirror between two poles at (8, 7) and (8, 8), he saw the wall at (7.5, 8). (Let us denote the line between these two poles by (8, 7)-(8, 8).)
* If there were four mirrors on (8, 7)-(8, 8), (7, 8)-(8, 8), (0, 0)-(0, 1) and (0, 0)-(1, 0), he saw himself at (0.75, 0.25).
* If there were four mirrors on (2, 1)-(2, 2), (1, 2)-(2, 2), (0, 0)-(0, 1) and (0, 0)-(1, 0), he saw himself at (0.75, 0.25)



Your job is to write a program that reports the location at which the thief saw one of the walls or himself with the given mirror arrangements.



Input

The input contains multiple data sets, each representing how to equip the room with mirrors. A data set is given in the following format.


n
d1 i1 j1
d2 i2 j2
. . .
dn in jn


The first integer n is the number of mirrors, such that 0 ≤ n ≤ 144. The way the k-th (1 ≤ k ≤ n) mirror is fixed is given by dk and (ik,jk). dk is either 'x' or 'y', which gives the direction of the mirror. If dk is 'x', the mirror is fixed on (ik, jk)-(ik + 1, jk). If dk is 'y', the mirror is fixed on (ik,jk) (ik,jk + 1). The end of the input is indicated by a negative integer.

Output

For each data set, your program should output the location (x,y) at which the thief saw one of the walls or himself. The location should be reported in a line containing two integers which are separated by a single space and respectively represent x and y in centimeter as the unit of length. No extra lines nor spaces are allowed.

Example

Input

0
1
y 8 7
4
y 8 7
x 7 8
y 0 0
x 0 0
4
y 2 1
x 1 2
y 0 0
x 0 0
-1


Output

800 750
750 800
75 25
75 25

Solution (in CPP):

Solution:
#include "bits/stdc++.h"
#include<unordered_map>
#include<unordered_set>
#pragma warning(disable:4996)
using namespace std;
using ld = long double;
const ld eps = 1e-9;


typedef ld  Weight;
struct Edge {
	int src, dest;
	int cap, rev;
	Weight weight;
	bool operator < (const Edge &rhs) const { return weight > rhs.weight; }
};


/* ??????????????¬ */

#include <complex>

typedef complex<ld> Point;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define all(x) (x).begin(),(x).end()


const ld pi = acos(-1.0);
const ld dtop = pi / 180.;
const ld ptod = 1. / dtop;

namespace std {
	bool operator<(const Point &lhs, const Point &rhs) {
		if (lhs.real() < rhs.real() - eps) return true;
		if (lhs.real() > rhs.real() + eps) return false;
		return lhs.imag() < rhs.imag();
	}
}

// ????????\???
Point input_Point() {
	ld x, y;
	cin >> x >> y;
	return Point(x, y);
}

// ????????????????????????
bool eq(const ld a, const ld b) {
	return (abs(a - b) < eps);
}

// ??????
ld dot(const Point& a, const Point& b) {
	return real(conj(a) * b);
}

// ??????
ld cross(const Point& a, const Point& b) {
	return imag(conj(a) * b);
}

// ??´????????????
class Line {
public:
	Point a, b;
	Line() : a(Point(0, 0)), b(Point(0, 0)) {}
	Line(Point a, Point b) : a(a), b(b) {}
	Point operator[](const int _num)const {
		if (_num == 0)return a;
		else if (_num == 1)return b;
		else {
			assert(false);
			return Point();
		}
	}
};

// ????????????
class Circle {
public:
	Point p;
	ld r;
	Circle() : p(Point(0, 0)), r(0) {}
	Circle(Point p, ld r) : p(p), r(r) {}
};

// ccw
// 1: a,b,c??????????¨???¨?????????????????¶
//-1: a,b,c???????¨???¨?????????????????¶
// 2: c,a,b???????????´???????????¶
//-2: a,b,c???????????´???????????¶
// 0: a,c,b???????????´???????????¶
int ccw(const Point& a, const Point &b, const Point &c) {
	const Point nb(b - a);
	const Point nc(c - a);
	if (cross(nb, nc) > eps) return 1;   // a,b,c??????????¨???¨?????????????????¶
	if (cross(nb, nc) < -eps) return -1; // a,b,c???????¨???¨?????????????????¶
	if (dot(nb, nc) < 0) return 2;       // c,a,b???????????´???????????¶
	if (norm(nb) < norm(nc)) return -2;  // a,b,c???????????´???????????¶
	return 0;                          // a,c,b???????????´???????????¶
}


/* ???????????? */

// ??´?????¨??´??????????????????
bool isis_ll(const Line& l, const Line& m) {
	return !eq(cross(l.b - l.a, m.b - m.a), 0);
}

// ??´?????¨?????????????????????
bool isis_ls(const Line& l, const Line& s) {
	return isis_ll(l, s) &&
		(cross(l.b - l.a, s.a - l.a) * cross(l.b - l.a, s.b - l.a) < eps);
}

// ????????¨?????????????????????
bool isis_ss(const Line& s, const Line& t) {
	return ccw(s.a, s.b, t.a) * ccw(s.a, s.b, t.b) <= 0 &&
		ccw(t.a, t.b, s.a) * ccw(t.a, t.b, s.b) <= 0;
}

// ????????´????????????
bool isis_lp(const Line& l, const Point& p) {
	return (abs(cross(l.b - p, l.a - p)) < eps);
}

// ?????????????????????
bool isis_sp(const Line& s, const Point& p) {
	return (abs(s.a - p) + abs(s.b - p) - abs(s.b - s.a) < eps);
}

// ??????????¶?
Point proj(const Line &l, const Point& p) {
	ld t = dot(p - l.a, l.b - l.a) / norm(l.a - l.b);
	return l.a + t * (l.b - l.a);
}

//???????±??????????????????????
Point reflect(const Line &l, const Point &p) {
	Point pr = proj(l, p);
	return pr * 2.l - p;
}

// ??´?????¨??´????????????
Point is_ll(const Line &s, const Line& t) {
	Point sv = s.b - s.a, tv = t.b - t.a;
	assert(cross(sv, tv) != 0);
	return s.a + sv * cross(tv, t.a - s.a) / cross(tv, sv);
}
// ??´?????¨??´????????????
vector<Point> is_ll2(const Line &s, const Line& t) {
	Point sv = s.b - s.a, tv = t.b - t.a;
	if (cross(sv, tv) != 0)return vector<Point>(1, is_ll(s, t));
	else {
		vector<Point>ans;
		for (int k = 0; k < 2; ++k) {
			if (isis_sp(s, t[k]) && find(ans.begin(), ans.end(), t[k]) == ans.end())ans.push_back(t[k]);
			if (isis_sp(t, s[k]) && find(ans.begin(), ans.end(), s[k]) == ans.end())ans.push_back(s[k]);
		}
		return ans;
	}
}
// ????????¨???????????????
//???????????£????????¨???????????¨assert(false)
Point is_ss(const Line &s, const Line& t) {
	if (isis_ss(s, t)) {
		for (int k = 0; k < 2; ++k) {
			for (int l = 0; l < 2; ++l) {
				if (s[k] == t[l])return s[k];
			}
		}
		return is_ll(s, t);
	}
	else {
		//??????isis_ss?????????
		assert(false);
		return Point(0, 0);
	}
}
// ????????¨???????????????
vector<Point> is_ss2(const Line &s, const Line& t) {
	vector<Point> kouho(is_ll2(s, t));
	vector<Point>ans;
	for (auto p : kouho) {
		if (isis_sp(s, p) && isis_sp(t, p))ans.emplace_back(p);
	}
	return ans;
}
// ??´?????¨???????????¢
ld dist_lp(const Line& l, const Point& p) {
	return abs(p - proj(l, p));
}

//??´?????¨??´???????????¢
ld dist_ll(const Line& l, const Line& m) {
	return isis_ll(l, m) ? 0 : dist_lp(l, m.a);
}

// ??´?????¨??????????????¢
ld dist_ls(const Line& l, const Line& s) {
	return isis_ls(l, s) ? 0 : min(dist_lp(l, s.a), dist_lp(l, s.b));
}

// ????????¨???????????¢
ld dist_sp(const Line& s, const Point& p) {
	Point r = proj(s, p);
	return isis_sp(s, r) ? abs(r - p) : min(abs(s.a - p), abs(s.b - p));
}

// ????????¨??????????????¢
ld dist_ss(const Line& s, const Line& t) {
	if (isis_ss(s, t)) return 0;
	return min({ dist_sp(s, t.a), dist_sp(s, t.b), dist_sp(t, s.a), dist_sp(t, s.b) });
}


//??´?????¨??´?????????????????????????????????
Line bisection(const Line &s, const Line &t) {
	const Point laglanju(is_ll(s, t));
	const Point avec = !(abs(laglanju - s[0])<eps) ? s[0] - laglanju : s[1] - laglanju;
	const Point bvec = !(abs(laglanju - t[0])<eps) ? t[0] - laglanju : t[1] - laglanju;

	return Line(laglanju, laglanju + (abs(bvec)*avec + abs(avec)*bvec) / (abs(avec) + abs(bvec)));
}


//???????????´?????????????????????
//???????????´??????????????§???????????¨????¢?????????¨?????????
Point  inner_center(const vector<Line>&ls) {
	vector<Point>vertics;
	for (int i = 0; i <static_cast<int>(ls.size()); ++i) {
		vertics.push_back(is_ll(ls[i], ls[(i + 1) % 3]));
	}
	if (vertics[0] == vertics[1] || vertics[1] == vertics[2] || vertics[2] == vertics[0])return vertics[0];
	Line bi1(bisection(Line(vertics[0], vertics[1]), Line(vertics[0], vertics[2])));
	Line bi2(bisection(Line(vertics[1], vertics[2]), Line(vertics[1], vertics[0])));
	if (bi1[0] == bi2[0])return bi1[0];
	else {
		return is_ll(bi1, bi2);
	}
}

//???????????´?????????????????????
//???????????´??????????????§???????????¨????¢?????????¨?????????
vector<Point>  ex_center(const vector<Line>&ls) {
	vector<Point>vertics;
	for (int i = 0; i < static_cast<int>(ls.size()); ++i) {
		vertics.push_back(is_ll(ls[i], ls[(i + 1) % 3]));
	}
	if (abs(vertics[0] - vertics[1])<eps || abs(vertics[1] - vertics[2])<eps || (abs(vertics[2] - vertics[0])<eps))return vector<Point>();
	vector<Point>ecs;
	for (int i = 0; i < 3; ++i) {
		Line bi1(bisection(Line(vertics[i], vertics[i] * 2.0l - vertics[(i + 2) % 3]), Line(vertics[i], vertics[(i + 1) % 3])));
		Line bi2(bisection(Line(vertics[(i + 1) % 3], vertics[(i + 1) % 3] * 2.0l - vertics[(i + 2) % 3]), Line(vertics[(i + 1) % 3], vertics[i])));
		ecs.push_back(is_ll(bi1, bi2));
	}
	return ecs;
}


//a,b:??????
//c:????????§??????
//???????????´?????????????????¢?????????????±??????????
vector<Point>  same_dis(const vector<Line>&ls) {
	vector<Point>vertics;
	vertics.push_back(is_ll(ls[0], ls[2]));
	vertics.push_back(is_ll(ls[1], ls[2]));

	if (abs(vertics[0] - vertics[1]) < eps)return vector<Point>{vertics[0]};
	Line bis(bisection(ls[0], ls[1]));
	vector<Point>ecs;

	Line abi(bisection(Line(vertics[0], vertics[1]), ls[0]));
	ecs.push_back(is_ll(bis, abi));


	Line bbi(bisection(Line(vertics[0], 2.l*vertics[0] - vertics[1]), ls[0]));
	ecs.push_back(is_ll(bis, bbi));

	return ecs;
}
/* ??? */

// ?????¨????????????
vector<Point> is_cc(const Circle& c1, const Circle& c2) {
	vector<Point> res;
	ld d = abs(c1.p - c2.p);
	ld rc = (d * d + c1.r * c1.r - c2.r * c2.r) / (2 * d);
	ld dfr = c1.r * c1.r - rc * rc;
	if (abs(dfr) < eps) dfr = 0.0;
	else if (dfr < 0.0) return res; // no intersection
	ld rs = sqrt(dfr);
	Point diff = (c2.p - c1.p) / d;
	res.push_back(c1.p + diff * Point(rc, rs));
	if (dfr != 0.0) res.push_back(c1.p + diff * Point(rc, -rs));
	return res;
}

//???????????????????????????
/*  0 => out
1 => on
2 => in*/
int is_in_Circle(const Circle &cir, const  Point& p) {
	ld dis = abs(cir.p - p);
	if (dis > cir.r + eps)return 0;
	else if (dis < cir.r - eps)return 2;
	else return 1;
}
//???lc??????rc??????????????????
/*0 => out
1 => on
2 => in*/
int Circle_in_Circle(const Circle &lc, const  Circle&rc) {
	ld dis = abs(lc.p - rc.p);
	if (dis < rc.r - lc.r - eps)return 2;
	else if (dis>rc.r - lc.r + eps)return 0;
	else return 1;
}

// ?????¨??´????????????
vector<Point> is_lc(const Circle& c, const Line& l) {
	vector<Point> res;
	ld d = dist_lp(l, c.p);
	if (d < c.r + eps) {
		ld len = (d > c.r) ? 0.0 : sqrt(c.r * c.r - d * d); //safety;
		Point nor = (l.a - l.b) / abs(l.a - l.b);
		res.push_back(proj(l, c.p) + len * nor);
		res.push_back(proj(l, c.p) - len * nor);
	}
	return res;
}

// ?????¨??????????????¢
vector<Point> is_sc(const Circle& c, const Line& l) {
	vector<Point> v = is_lc(c, l), res;
	for (Point p : v)
		if (isis_sp(l, p)) res.push_back(p);
	return res;
}

// ?????¨????????\???
vector<Line> tangent_cp(const Circle& c, const Point& p) {
	vector<Line> ret;
	Point v = c.p - p;
	ld d = abs(v);
	ld l = sqrt(norm(v) - c.r * c.r);
	if (isnan(l)) { return ret; }
	Point v1 = v * Point(l / d, c.r / d);
	Point v2 = v * Point(l / d, -c.r / d);
	ret.push_back(Line(p, p + v1));
	if (l < eps) return ret;
	ret.push_back(Line(p, p + v2));
	return ret;
}

// ?????¨????????\???
vector<Line> tangent_cc(const Circle& c1, const Circle& c2) {
	vector<Line> ret;
	if (abs(c1.p - c2.p) - (c1.r + c2.r) > -eps) {
		Point center = (c1.p * c2.r + c2.p * c1.r) / (c1.r + c2.r);
		ret = tangent_cp(c1, center);
	}
	if (abs(c1.r - c2.r) > eps) {
		Point out = (-c1.p * c2.r + c2.p * c1.r) / (c1.r - c2.r);
		vector<Line> nret = tangent_cp(c1, out);
		ret.insert(ret.end(), all(nret));
	}
	else {
		Point v = c2.p - c1.p;
		v /= abs(v);
		Point q1 = c1.p + v * Point(0, 1) * c1.r;
		Point q2 = c1.p + v * Point(0, -1) * c1.r;
		ret.push_back(Line(q1, q1 + v));
		ret.push_back(Line(q2, q2 + v));
	}
	return ret;
}
//??????????????????????????¢???
ld two_Circle_area(const Circle&l, const Circle&r) {
	ld dis = abs(l.p - r.p);
	if (dis > l.r + r.r)return 0;
	else if (dis + r.r < l.r) {
		return r.r*r.r*pi;
	}
	else if (dis + l.r < r.r) {
		return l.r*l.r*pi;
	}
	else {
		ld ans = (l.r)*(l.r)*acos((dis*dis + l.r*l.r - r.r*r.r) / (2 * dis*l.r)) +
			(r.r)*(r.r)*acos((dis*dis + r.r*r.r - l.r*l.r) / (2 * dis*r.r)) -
			sqrt(4 * dis*dis*l.r*l.r - (dis*dis + l.r*l.r - r.r*r.r)*(dis*dis + l.r*l.r - r.r*r.r)) / 2;
		return ans;
	}

}

/* ????§???¢ */

typedef vector<Point> Polygon;

// ??¢???
ld area(const Polygon &p) {
	ld res = 0;
	int n = p.size();
	rep(j, n) res += cross(p[j], p[(j + 1) % n]);
	return res / 2;
}

//????§???¢????????¢??????
bool is_counter_clockwise(const Polygon &poly) {
	ld angle = 0;
	int n = poly.size();
	rep(i, n) {
		Point a = poly[i], b = poly[(i + 1) % n], c = poly[(i + 2) % n];
		angle += arg((c - b) / (b - a));
	}
	return angle > eps;
}

// ??????????????????
/*0 => out
1 => on
2 => in*/
int is_in_Polygon(const Polygon &poly, const  Point& p) {
	ld angle = 0;
	int n = poly.size();
	rep(i, n) {
		Point a = poly[i], b = poly[(i + 1) % n];
		if (isis_sp(Line(a, b), p)) return 1;
		angle += arg((b - p) / (a - p));
	}
	return eq(angle, 0) ? 0 : 2;
}
//??????????????????2?????????
enum { out, on, in };
int convex_contains(const Polygon &P, const Point &p) {
	const int n = P.size();
	Point g = (P[0] + P[n / 3] + P[2 * n / 3]) / 3.0l; // inner-point
	int a = 0, b = n;
	while (a + 1 < b) { // invariant: c is in fan g-P[a]-P[b]
		int c = (a + b) / 2;
		if (cross(P[a] - g, P[c] - g) > 0) { // angle < 180 deg
			if (cross(P[a] - g, p - g) > 0 && cross(P[c] - g, p - g) < 0) b = c;
			else                                                  a = c;
		}
		else {
			if (cross(P[a] - g, p - g) < 0 && cross(P[c] - g, p - g) > 0) a = c;
			else                                                  b = c;
		}
	}
	b %= n;
	if (cross(P[a] - p, P[b] - p) < 0) return 0;
	if (cross(P[a] - p, P[b] - p) > 0) return 2;
	return 1;
}

// ??????
//???????????????????????¨????????????????????§??¨???
Polygon convex_hull(vector<Point> ps) {
	int n = ps.size();
	int k = 0;
	sort(ps.begin(), ps.end());
	Polygon ch(2 * n);
	for (int i = 0; i < n; ch[k++] = ps[i++])
		while (k >= 2 && ccw(ch[k - 2], ch[k - 1], ps[i]) <= 0) --k;
	for (int i = n - 2, t = k + 1; i >= 0; ch[k++] = ps[i--])
		while (k >= t && ccw(ch[k - 2], ch[k - 1], ps[i]) <= 0) --k;
	ch.resize(k - 1);
	return ch;
}



//????????????
vector<Polygon> convex_cut(const Polygon &ps, const Line& l) {
	int n = ps.size();
	Polygon q;
	Polygon r;
	rep(i, n) {
		Point a = ps[i], b = ps[(i + 1) % n];
		Line m = Line(a, b);
		if (ccw(l.a, l.b, a) != -1) q.push_back(a);
		if (ccw(l.a, l.b, a) != 1) r.push_back(a);
		if (ccw(l.a, l.b, a) * ccw(l.a, l.b, b) < 0 && isis_ll(l, m)) {
			q.push_back(is_ll(l, m));
			r.push_back(is_ll(l, m));
		}
	}
	const vector<Polygon>polys{ q,r };
	return polys;
}


/* ??¢??¬??????????????? */
void add_Point(vector<Point> &ps, const Point p) {
	for (Point q : ps) if (abs(q - p) < eps) return;
	ps.push_back(p);
}




typedef vector<Edge> Edges;
typedef vector<Edges> Graph;
typedef vector<Weight> Array;
typedef vector<Array> Matrix;

void add_edge(Graph &g, int src, int dest, int cap, Weight weight) {
	g[src].push_back(Edge{ src, dest, cap, (int)g[dest].size(), weight });
	g[dest].push_back(Edge{ dest, src, 0, (int)g[src].size() - 1, -weight });
}

Graph segment_arrangement(const vector<Line> &s, const vector<Point> &p) {
	int n = p.size(), m = s.size();
	Graph g(n);
	rep(i, m) {
		vector<pair<ld, int>> vec;
		rep(j, n) {
			if (isis_sp(s[i], p[j]))
				vec.emplace_back(abs(s[i].a - p[j]), j);
		}
		sort(all(vec));
		rep(j, vec.size() - 1) {
			int from = vec[j].second, to = vec[j + 1].second;
			add_edge(g, from, to, 1, static_cast<Weight>(abs(p[from] - p[to])));
		}
	}
	return g;
}
pair<vector<Point>, Graph> sennbunn_arrangement(const vector<Line>&s) {
	vector<Point>crss;
	for (int i = 0; i < static_cast<int>(s.size()); ++i) {
		for (int j = i + 1; j < static_cast<int>(s.size()); ++j) {
			if (isis_ss(s[i], s[j])) {
				crss.push_back(is_ll2(s[i], s[j])[0]);
			}
		}
	}
	for (int i = 0; i <static_cast<int>(s.size()); ++i) {
		crss.push_back(s[i][0]);
		crss.push_back(s[i][1]);
	}
	sort(crss.begin(), crss.end());
	crss.erase(unique(crss.begin(), crss.end()), crss.end());

	return make_pair(crss, segment_arrangement(s, crss));
}

Graph Circle_arrangement(const vector<Circle> &c, const vector<Point> &p) {
	const int n = p.size(), m = c.size();
	Graph g(n);
	rep(i, m) {
		vector<pair<ld, int>> vec;
		rep(j, n) if (abs(abs(c[i].p - p[j]) - c[i].r) < eps)
			vec.emplace_back(arg(c[i].p - p[j]), j);
		sort(all(vec));
		rep(j, vec.size() - 1) {
			int from = vec[j].second, to = vec[j + 1].second;
			ld angle = vec[j + 1].first - vec[j].first;
			add_edge(g, from, to, 1, static_cast<Weight>(angle * c[i].r));
		}
		if (vec.size() >= 2) {
			int from = vec.back().second, to = vec.front().first;
			ld angle = vec.front().first - vec.back().first;
			add_edge(g, from, to, 1, static_cast<Weight>(angle * c[i].r));
		}
	}
	return g;
}

int main() {
	while (1) {
		int N; cin >> N;
		if (N == -1)break;
		vector<Line>mirrors;
		vector<Line>walls;
		walls.push_back(Line(Point(-0.000001, -0.000001), Point(8.000001, -0.000001)));
		walls.push_back(Line(Point(8.000001, -0.000001), Point(8.000001, 8.000001)));
		walls.push_back(Line(Point(8.000001, 8.000001), Point(-0.000001, 8.000001)));
		walls.push_back(Line(Point(-0.000001, 8.000001), Point(-0.000001, -0.000001)));
		for (int i = 0; i < N; ++i) {
			char c; int k, j; cin >> c >> k >> j;
			if (c == 'y') {
				mirrors.push_back(Line(Point(k, j), Point(k, j + 1)));

			}
			else {
				mirrors.push_back(Line(Point(k, j), Point(k + 1, j)));
			}
		}
		Point start(0.75, 0.25);
		Point now(start);
		Point vec(1, 1);
		vec /= abs(vec);
		Point ans(-1, -1);
		int num = 0;
		int pre = -1;
		while (1) {
			Line look(now, now + vec * 100.l);
			ld mindis = 10000;
			int hit = -1;
			Point hitp;
			for (int i = 0; i < mirrors.size(); ++i) {
				if (i == pre)continue;
				if (isis_ss(look, mirrors[i])) {
					Point p(is_ss(look, mirrors[i]));
					if (mindis > abs(p - now)) {
						mindis = abs(p - now);
						hit = i;
						hitp = p;
					}
				}
			}
			for (int i = 0; i < walls.size(); ++i) {
				if (isis_ss(look, walls[i])) {
					Point p(is_ss(look, walls[i]));
					if (mindis > abs(p - now)) {
						mindis = abs(p - now);
						hit = i+mirrors.size();
						hitp = p;

					}
				}
			}
			if(num){
				if (isis_sp(look, start)) {
					Point p(start);
					if (mindis > abs(p - now)) {
						mindis = abs(p - now);
						hit = mirrors.size() + walls.size();
						hitp = p;
					}
				}
			}
			if (hit == -1)assert(false);
			if (hit >= mirrors.size()) {
				ans = hitp;
				break;

			}
			else {
				Line l(mirrors[hit][0], mirrors[hit][1]);
				Point par= (l[0]-l[1])*(dot(vec, l[0] - l[1])/abs(l[0]-l[1]));
				Point ver = vec - par;
				vec = par - ver;
			}
			num++;
			pre = hit;
			now = hitp;
		}
		int x = int(ans.real() * 100 +0.1);
		int y = int(ans.imag() * 100 +0.1 );
		cout << x << " " << y << endl;
		
	}
	return 0;
}