/**
 * 
 */

// #include {{{
#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <cfloat>
#include <cmath>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque>
#include <forward_list>
#include <functional>
#include <iomanip>
#include <iostream>
#include <fstream>
#include <sstream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <string>
#include <tuple>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>

#ifdef DEBUG
#include <fmt/format.h>
#endif

using namespace std;
// }}}

// type {{{
using  s8 =   int8_t;
using  u8 =  uint8_t;
using s16 =  int16_t;
using u16 = uint16_t;
using s32 =  int32_t;
using u32 = uint32_t;
using s64 =  int64_t;
using u64 = uint64_t;

template<typename T>
using max_heap = priority_queue<T, vector<T>, less<T>>;
template<typename T>
using min_heap = priority_queue<T, vector<T>, greater<T>>;
// }}}

// ???????????´
//#define int s64
constexpr bool IOS_SYNCSTDIO = false;
constexpr int  IOS_PREC      = 10;

constexpr int    INF = numeric_limits<int>::max();
constexpr double EPS = 1e-9;

// util {{{
template<typename T>
constexpr bool is_odd(T x)
{
    return x % 2 == 1;
}

template<typename T>
constexpr bool is_even(T x)
{
    return x % 2 == 0;
}

template<typename T>
constexpr int cmp(T x, T y)
{
    return (x > y) - (x < y);
}

template<typename T>
constexpr int sgn(T x)
{
    return cmp(x, T(0));
}

template<typename T>
constexpr typename enable_if<is_signed<T>::value,T>::type modulo(T a, T b)
{
    assert(b > 0);
    T r = a % b;
    return r >= 0 ? r : r+b;
}

template<typename T>
constexpr T clamp(T x, T lo, T hi)
{
    assert(lo <= hi);
    if(x < lo)
        return lo;
    else if(x > hi)
        return hi;
    else
        return x;
}

int sqrti(int x)
{
    assert(x >= 0);
    return static_cast<int>(sqrt(x));
}

s64 sqrtl(s64 x)
{
    assert(x >= 0);
    return static_cast<s64>(sqrtl(x));
}

template<typename T>
bool chmax(T& xmax, const T& x)
{
    if(x > xmax) {
        xmax = x;
        return true;
    }
    else {
        return false;
    }
}

template<typename T>
bool chmin(T& xmin, const T& x)
{
    if(x < xmin) {
        xmin = x;
        return true;
    }
    else {
        return false;
    }
}

template<typename T>
constexpr int SIZE(const T& c)
{
    return static_cast<int>(c.size());
}

template<typename T, size_t N>
constexpr int SIZE(const T (&)[N])
{
    return static_cast<int>(N);
}

ostream& FPRINT(ostream& out) { return out; }

template<typename T, typename... TS>
ostream& FPRINT(ostream& out, const T& x, const TS& ...args)
{
    out << x;
    if(sizeof...(args))
        out << ' ';
    return FPRINT(out, args...);
}

template<typename... TS>
ostream& FPRINTLN(ostream& out, const TS& ...args)
{
    FPRINT(out, args...);
    return out << '\n';
}

template<typename InputIt>
ostream& FPRINTSEQ(ostream& out, InputIt first, InputIt last)
{
    for(InputIt it = first; it != last; ++it) {
        if(it != first) out << ' ';
        out << *it;
    }
    return out;
}

template<typename T, size_t N>
ostream& FPRINTARRAY1(ostream& out, const T (&c)[N])
{
    return FPRINTSEQ(out, cbegin(c), cend(c));
}

template<typename T, size_t N1, size_t N2>
ostream& FPRINTARRAY2(ostream& out, const T (&c)[N1][N2])
{
    out << '\n';
    for(const auto& e : c) {
        FPRINTARRAY1(out, e) << '\n';
    }
    return out;
}

template<typename... TS>
ostream& PRINT(const TS& ...args)
{
    return FPRINT(cout, args...);
}

template<typename... TS>
ostream& PRINTLN(const TS& ...args)
{
    return FPRINTLN(cout, args...);
}

template<typename InputIt>
ostream& PRINTSEQ(InputIt first, InputIt last)
{
    return FPRINTSEQ(cout, first, last);
}

template<typename T, size_t N>
ostream& PRINTARRAY1(const T (&c)[N])
{
    return FPRINTARRAY1(cout, c);
}

template<typename T, size_t N1, size_t N2>
ostream& PRINTARRAY2(const T (&c)[N1][N2])
{
    return FPRINTARRAY2(cout, c);
}

template<typename... TS>
ostream& DPRINT(const TS& ...args)
{
    return FPRINT(cerr, args...);
}

template<typename... TS>
ostream& DPRINTLN(const TS& ...args)
{
    return FPRINTLN(cerr, args...);
}

template<typename InputIt>
ostream& DPRINTSEQ(InputIt first, InputIt last)
{
    return FPRINTSEQ(cerr, first, last);
}

template<typename T, size_t N>
ostream& DPRINTARRAY1(const T (&c)[N])
{
    return FPRINTARRAY1(cerr, c);
}

template<typename T, size_t N1, size_t N2>
ostream& DPRINTARRAY2(const T (&c)[N1][N2])
{
    return FPRINTARRAY2(cerr, c);
}

template<typename T1, typename T2>
ostream& operator<<(ostream& out, const pair<T1,T2>& p)
{
    return out << '(' << p.first << ',' << p.second << ')';
}

template<typename T>
ostream& operator<<(ostream& out, const vector<T>& c)
{
    return FPRINTSEQ(out, cbegin(c), cend(c));
}

template<typename T>
ostream& operator<<(ostream& out, const vector<vector<T>>& c)
{
    out << '\n';
    for(const auto& e : c) {
        out << e << '\n';
    }
    return out;
}

template<typename T>
ostream& operator<<(ostream& out, const deque<T>& c)
{
    return FPRINTSEQ(out, cbegin(c), cend(c));
}

template<typename T>
ostream& operator<<(ostream& out, const list<T>& c)
{
    return FPRINTSEQ(out, cbegin(c), cend(c));
}

template<typename T>
ostream& operator<<(ostream& out, const forward_list<T>& c)
{
    return FPRINTSEQ(out, cbegin(c), cend(c));
}

template<typename T>
ostream& operator<<(ostream& out, const set<T>& c)
{
    return FPRINTSEQ(out, cbegin(c), cend(c));
}

template<typename T>
ostream& operator<<(ostream& out, const unordered_set<T>& c)
{
    return out << set<T>(cbegin(c), cend(c));
}

template<typename T, size_t N>
ostream& operator<<(ostream& out, const array<T,N>& c)
{
    return FPRINTSEQ(out, cbegin(c), cend(c));
}

template<typename InputIt>
ostream& FPRINTMAP(ostream& out, InputIt first, InputIt last)
{
    out << "{\n";
    for(auto it = first; it != last; ++it) {
        out << "  " << it->first << " : " << it->second << '\n';
    }
    out << "}\n";
    return out;
}

template<typename InputIt>
ostream& PRINTMAP(InputIt first, InputIt last)
{
    return FPRINTMAP(cout, first, last);
}

template<typename InputIt>
ostream& DPRINTMAP(InputIt first, InputIt last)
{
    return FPRINTMAP(cerr, first, last);
}

template<typename K, typename V>
ostream& operator<<(ostream& out, const map<K,V>& c)
{
    return FPRINTMAP(out, cbegin(c), cend(c));
}

template<typename K, typename V>
ostream& operator<<(ostream& out, const unordered_map<K,V>& c)
{
    return out << map<K,V>(cbegin(c), cend(c));
}

template<typename T, typename C>
ostream& operator<<(ostream& out, stack<T,C> c)
{
    while(!c.empty()) {
        out << c.top();
        c.pop();
        if(!c.empty()) out << ' ';
    }
    return out;
}

template<typename T, typename C>
ostream& operator<<(ostream& out, queue<T,C> c)
{
    while(!c.empty()) {
        out << c.front();
        c.pop();
        if(!c.empty()) out << ' ';
    }
    return out;
}

template<typename T, typename Cont, typename Cmp>
ostream& operator<<(ostream& out, priority_queue<T,Cont,Cmp> c)
{
    while(!c.empty()) {
        out << c.top();
        c.pop();
        if(!c.empty()) out << ' ';
    }
    return out;
}

struct pairhash {
    template<typename T1, typename T2>
    size_t operator()(const pair<T1,T2>& p) const
    {
        size_t ans = 17;
        ans = 31*ans + hash<T1>()(p.first);
        ans = 31*ans + hash<T2>()(p.second);
        return ans;
    }
};

struct IosIni {
    IosIni()
    {
        cin.tie(nullptr);
        ios::sync_with_stdio(IOS_SYNCSTDIO);
        cout << fixed << setprecision(IOS_PREC);
    }
} IOSINI;

#define FOR(i, start, end) for(int i = (start); i < (end); ++i)
#define REP(i, n) FOR(i, 0, n)

#define ALL(f,cc,...) (([&](decltype((cc)) c) { return (f)(begin(c), end(c), ## __VA_ARGS__); })(cc))

#define DBG(x) DPRINTLN('L', __LINE__, ':', #x, ':', (x))
// }}}

bool equals(double x, double y, double eps=EPS)
{
    return fabs(x-y) < eps;
}

class Vec2d {
public:
    Vec2d() : x(0.0), y(0.0) {}
    Vec2d(double xx, double yy) : x(xx), y(yy) {}

    Vec2d& operator+=(const Vec2d& rhs)
    {
        x += rhs.x;
        y += rhs.y;
        return *this;
    }
    Vec2d& operator-=(const Vec2d& rhs)
    {
        x -= rhs.x;
        y -= rhs.y;
        return *this;
    }
    Vec2d& operator*=(double c)
    {
        x *= c;
        y *= c;
        return *this;
    }
    Vec2d& operator/=(double c)
    {
        x /= c;
        y /= c;
        return *this;
    }

    double norm() const { return x*x + y*y; }
    double abs() const { return sqrt(norm()); }

    double x;
    double y;
};

bool equals(const Vec2d& lhs, const Vec2d& rhs, double eps=EPS)
{
    return equals(lhs.x, rhs.x, eps) && equals(lhs.y, rhs.y, eps);
}

const Vec2d operator+(const Vec2d& lhs, const Vec2d& rhs) { return Vec2d(lhs) += rhs; }
const Vec2d operator-(const Vec2d& lhs, const Vec2d& rhs) { return Vec2d(lhs) -= rhs; }
const Vec2d operator*(const Vec2d& lhs, double rhs) { return Vec2d(lhs) *= rhs; }
const Vec2d operator*(double lhs, const Vec2d& rhs) { return Vec2d(rhs) *= lhs; }
const Vec2d operator/(const Vec2d& lhs, double rhs) { return Vec2d(lhs) /= rhs; }

ostream& operator<<(ostream& out, const Vec2d& v)
{
    return out << '(' << v.x << ',' << v.y << ')';
}

double dot(const Vec2d& lhs, const Vec2d& rhs)
{
    return lhs.x * rhs.x + lhs.y * rhs.y;
}

double cross(const Vec2d& lhs, const Vec2d& rhs)
{
    return lhs.x * rhs.y - lhs.y * rhs.x;
}

class Line {
public:
    Line() {}
    Line(const Vec2d& pp1, const Vec2d& pp2) : p1(pp1), p2(pp2) {}
    Line(double x1, double y1, double x2, double y2) : p1(x1,y1), p2(x2,y2) {}

    Vec2d base() const { return p2 - p1; }

    Vec2d p1;
    Vec2d p2;
};

bool is_orthogonal(const Vec2d& a, const Vec2d& b)
{
    return equals(dot(a,b), 0.0);
}

bool is_parallel(const Vec2d& a, const Vec2d& b)
{
    return equals(cross(a,b), 0.0);
}

Vec2d project(const Line& l, const Vec2d& p)
{
    Vec2d base = l.base();
    double r = dot(p - l.p1, base) / base.norm();
    return l.p1 + r * base;
}

Line L;

void solve()
{
    int Q; cin >> Q;

    REP(_, Q) {
        int x, y; cin >> x >> y;
        Vec2d p(x,y);
        Vec2d ans = project(L, p);
        PRINTLN(ans.x, ans.y);
    }
}

signed main(signed /*argc*/, char** /*argv*/)
{
    int x1, y1; cin >> x1 >> y1;
    int x2, y2; cin >> x2 >> y2;
    L = Line(x1, y1, x2, y2);

    solve();

    return 0;
}

Measured memory_bytes: 3296