Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

var (
	sc = bufio.NewScanner(os.Stdin)
)

type Point struct {
	X, Y int
}

type Gem struct {
	ID int
	Point
}

type Map struct {
	Current       *Point
	Gems          map[int]*Gem
	CollectedGems map[int]*Gem
}

func (m *Map) Move(dir string, l int) {
	switch {
	case dir == "N" || dir == "S":
		a := 1
		if dir == "S" {
			a = -1
		}
		for i := 0; i < l; i++ {
			m.Current.Y += a
			for _, g := range m.Gems {
				m.TryToTakeGem(g)
			}
		}
	case dir == "E" || dir == "W":
		a := 1
		if dir == "W" {
			a = -1
		}
		for i := 0; i < l; i++ {
			m.Current.X += a
			for _, g := range m.Gems {
				m.TryToTakeGem(g)
			}
		}
	}
}

func (m *Map) HasCompleted() bool {
	return len(m.Gems) == 0
}

func (m *Map) TryToTakeGem(g *Gem) {
	if m.Current.X == g.X && m.Current.Y == g.Y {
		m.CollectedGems[g.ID] = g
		delete(m.Gems, g.ID)
	}
}

func main() {
	for sc.Scan() {
		n, _ := strconv.Atoi(sc.Text())
		if n == 0 {
			break
		}
		m := &Map{
			Current:       &Point{X: 10, Y: 10},
			Gems:          map[int]*Gem{},
			CollectedGems: map[int]*Gem{},
		}
		for i := 0; i < n; i++ {
			sc.Scan()
			chunks := strings.Split(sc.Text(), " ")
			x, _ := strconv.Atoi(chunks[0])
			y, _ := strconv.Atoi(chunks[1])
			m.Gems[i+1] = &Gem{ID: i + 1, Point: Point{X: x, Y: y}}
		}
		sc.Scan()
		opCnt, _ := strconv.Atoi(sc.Text())
		for i := 0; i < opCnt; i++ {
			sc.Scan()
			chunks := strings.Split(sc.Text(), " ")
			dir := chunks[0]
			v, _ := strconv.Atoi(chunks[1])
			m.Move(dir, v)
		}
		msg := "No"
		if m.HasCompleted() {
			msg = "Yes"
		}
		fmt.Println(msg)
	}
}

C++: #include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> P;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
// #define int long long
#define pb push_back
#define mp make_pair
#define eps 1e-9
#define INF 2000000000
#define LLINF 1000000000000000ll
#define sz(x) ((int)(x).size())
#define fi first
#define sec second
#define all(x) (x).begin(),(x).end()
#define sq(x) ((x)*(x))
#define rep(i,n) for(int (i)=0;(i)<(int)(n);(i)++)
#define repn(i,a,n) for(int (i)=(a);(i)<(int)(n);(i)++)
#define EQ(a,b) (abs((a)-(b))<eps)
#define dmp(x) cerr << __LINE__ << " " << #x << " " << x << endl;
template<class T> void chmin(T& a,const T& b){if(a>b)a=b;}
template<class T> void chmax(T& a,const T& b){if(a<b)a=b;}
template<class T>
using MaxHeap = priority_queue<T>;
template<class T>
using MinHeap = priority_queue<T,vector<T>,greater<T> >;
template<class T,class U>
ostream& operator << (ostream& os,const pair<T,U>& p){
  os << p.fi << ',' << p.sec; return os;
}
template<class T,class U>
istream& operator >> (istream& is,pair<T,U>& p){
  is >> p.fi >> p.sec; return is;
}
template<class T>
ostream& operator << (ostream &os,const vector<T> &vec){
  for(int i=0;i<vec.size();i++){
    os << vec[i];
    if(i+1<vec.size())os << ' ';
  }
  return os;
}
template<class T>
istream& operator >> (istream &is,vector<T>& vec){
  for(int i=0;i<vec.size();i++)is >> vec[i];
  return is;
}
void fastio(){
  cin.tie(0);
  ios::sync_with_stdio(0);
  cout<<fixed<<setprecision(20);
}
const ll MOD = 1000000007ll; // if inv is needed, this shold be prime.
struct ModInt{
	ll val;
	ModInt():val(0ll){}
	ModInt(const ll& v):val(((v%MOD)+MOD)%MOD){}
	ModInt exp(ll y)const{
		if(!y)return ModInt(1ll);
		ModInt a = exp(y/2ll);
		a *= a;
		if(y&1)a*=(*this);
		return a;
	}
	bool operator==(const ModInt& x)const{return val==x.val;}
	inline bool operator!=(const ModInt& x)const{return !(*this==x);}
	bool operator<(const ModInt& x)const{return val<x.val;}
	bool operator>(const ModInt& x)const{return val>x.val;}
	inline bool operator>=(const ModInt& x)const{return !(*this<x);}
	inline bool operator<=(const ModInt& x)const{return !(*this>x);}
	ModInt& operator+=(const ModInt& x){if((val+=x.val)>=MOD)val-=MOD;return *this;}
	ModInt& operator-=(const ModInt& x){if((val+=MOD-x.val)>=MOD)val-=MOD;return *this;}
	ModInt& operator*=(const ModInt& x){(val*=x.val)%=MOD;return *this;}
	ModInt operator+(const ModInt& x)const{return ModInt(*this)+=x;}
	ModInt operator-(const ModInt& x)const{return ModInt(*this)-=x;}
	ModInt operator*(const ModInt& x)const{return ModInt(*this)*=x;}
  friend istream& operator>>(istream&i,ModInt& x){ll v;i>>v;x=v;return i;}
  friend ostream& operator<<(ostream&o,const ModInt& x){o<<x.val;return o;}
};
ModInt pow(ModInt a,ll x){
  ModInt res = ModInt(1ll);
  while(x){
    if(x&1)res *= a;
    x >>= 1;
    a = a*a;
  }
  return res;
}
vector<ModInt> inv,fac,facinv;
// notice: 0C0 = 1 
ModInt nCr(int n,int r){
	assert(!(n<r));
	assert(!(n<0||r<0));
	return fac[n]*facinv[r]*facinv[n-r];
}
void init(int SIZE){
  fac.resize(SIZE+10);
  inv.resize(SIZE+10);
  facinv.resize(SIZE+10);
	fac[0]=ModInt(1ll);
	for(int i=1;i<=SIZE;i++)fac[i]=fac[i-1]*ModInt(i);
	inv[1]=ModInt(1ll);
	for(int i=2;i<=SIZE;i++)inv[i]=ModInt(0ll)-ModInt(MOD/i)*inv[MOD%i];
	facinv[0]=ModInt(1ll);
	for(int i=1;i<=SIZE;i++)facinv[i]=facinv[i-1]*inv[i];
	return;
}
bool solve(){
  int n;
  cin >> n;
  if(n==0)return false;
  vector<vector<int>> f(30,vi(30,0));
  for(int i=0;i<n;i++){
    int a,b;
    cin >> a >> b;
    f[a][b] = 1;
  }
  int m;
  cin >> m;
  int x = 10, y = 10;
  for(int i=0;i<m;i++){
    char d;
    int l;
    cin >> d >> l;
    if(d=='N'){
      for(int i=0;i<l;i++){
        y++;
        f[x][y] = 0;
      }
    }else if(d=='E'){
      for(int i=0;i<l;i++){
        x++;
        f[x][y] = 0;
      }
    }else if(d=='S'){
      for(int i=0;i<l;i++){
        y--;
        f[x][y] = 0;
      }
    }else{
      for(int i=0;i<l;i++){
        x--;
        f[x][y] = 0;
      }
    }
  }
  int ans = 0;
  for(int i=0;i<=20;i++){
    for(int j=0;j<=20;j++){
      ans += f[i][j];
    }
  }
  if(ans==0)cout << "Yes" << endl;
  else cout << "No" << endl;
  return true;
}
signed main(){
  fastio();
  while(solve()){}
  return 0;
}

C++: #include <iostream>
#include <cstdio>
#include <vector>
#include <algorithm>
#include <complex>
#include <cstring>
#include <cstdlib>
#include <string>
#include <cmath>
#include <queue>
#include <map>
using namespace std;

#define REP(i,n) for(int i=0;i<(int)n;++i)
#define FOR(i,c) for(__typeof((c).begin())i=(c).begin();i!=(c).end();++i)
#define ALL(c) (c).begin(), (c).end()
const int INF = 1<<29;

int main() {
  int dx[] = {0,1,0,-1};
  int dy[] = {1,0,-1,0};
  map<char,int> mp;
  mp['N'] = 0;
  mp['E'] = 1;
  mp['S'] = 2;
  mp['W'] = 3;
  
  int n;
  while(cin >> n, n) {
    bool gem[21][21] = {}; 
    REP(i,n) {
      int a,b;
      cin>>a>>b;
      gem[a][b] = 1;
    }
    int m;
    cin >> m;
    int x = 10, y = 10;
    int get = 0;
    REP(i,m) {
      char c;
      cin >> c;
      int a;
      cin >> a;
      REP(i,a) {
        x += dx[mp[c]];
        y += dy[mp[c]];
        if (gem[x][y]) {
          gem[x][y] = 0;
          get++;
        }
      }
    }
    if (get == n)
      cout << "Yes"<< endl;
    else
      cout << "No" << endl;
  }
}