#include <bits/stdc++.h>
using namespace std;
#define RN return
#define forw(_,l,r) for(auto _=(l);_<(r);++_)
#define fors(_,r,l) for(auto _=(r);_>(l);--_)
// #define DEBUG if((cout<<"line:"<<__LINE__<<'\n'), 1)
#define DEBUG if(0)
// #define int ll
#define fastio cin.tie(0);cout.tie(0);ios::sync_with_stdio(false);
#define DEBUG if(0)

void read(){}
template<typename T,typename...Types>
void read(T& x, Types&...args){
  x=0; char c=' '; bool sgn=0;
  while(isspace(c))c=getchar();
  if(c=='-')c=getchar(),sgn=1;
  while(isdigit(c))x=10*x+c-'0',c=getchar();
  if(sgn)x=-x;
  read(args...);
}
void write(auto x){
  char str[100],p=0;
  do{str[p++]=x%10+'0',x/=10;}while(x);
  fors(i,p-1,-1)putchar(str[i]);
}

typedef unsigned long long ull;
typedef long long ll;
const int NUM=1e5+10;
ull dp_[NUM/64+10]={},*dpv=dp_+2;//!
void dp(int x, int t){
  int d1=x/64,d2=x%64;
  fors(i,t/64+2,d1-1){
    dpv[i]|=(dpv[i-d1]<<d2);
    if(d2)dpv[i]|=(dpv[i-d1-1]>>(64-d2));
  }
}
bool getbit(int x){
  RN (dpv[x/64]&(1ull<<(x%64)));//!
}
map<int,int> mp;
vector<int> gs;

int main()
{
  int N,R=0,S=0; read(N);
  dpv[0]=1; bool hasz=0;
  forw(i,0,N){
    int g,r;read(g,r);
    mp[g]++,R=__gcd(R,r);S+=g;
    hasz|=g==0;
  }
  if(S&1){
    if((R&1)==0){puts("N");RN 0;}//!
    else if(R>S){puts("N");RN 0;}
  }
  int target=(S&1)?(S-R)/2:S/2;
  for(auto [s,c]:mp){
    for(int r,t;;c-=t){
      t=(c+1)/2,r=s*t;
      if(r<=target)
        gs.push_back(s*((c+1)/2));
      if(c==1)break;
    }
  }for(auto x: gs){
    dp(x,target);
    // cout<<x<<' '<<getbit(62)<<endl;
  }target%=R;
  for(;target<=S/2;target+=R){
    bool ok=getbit(target);
    if(target==0&&!hasz)continue;
    if(ok){puts("Y");RN 0;}
  }puts("N");
  RN 0;
}