#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for(ll i=0;i<n;i++)
#define repl(i,l,r) for(ll i=(l);i<(r);i++)
#define per(i,n) for(ll i=(n)-1;i>=0;i--)
#define perl(i,r,l) for(ll i=r-1;i>=l;i--)
#define fi first
#define se second
#define pb push_back
#define ins insert
#define pqueue(x) priority_queue<x,vector<x>,greater<x>>
#define all(x) (x).begin(),(x).end()
#define CST(x) cout<<fixed<<setprecision(x)
#define vtpl(x,y,z) vector<tuple<x,y,z>>
#define rev(x) reverse(x);
using ll=long long;
using vl=vector<ll>;
using vvl=vector<vector<ll>>;
using pl=pair<ll,ll>;
using vpl=vector<pl>;
using vvpl=vector<vpl>;
const ll MOD=1000000007;
const ll MOD9=998244353;
const int inf=1e9+10;
const ll INF=4e18;
const ll dy[9]={0,1,-1,0,1,1,-1,-1,0};
const ll dx[9]={1,0,0,-1,1,-1,1,-1,0};
template<class T> inline bool chmin(T& a, T b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}
template<class T> inline bool chmax(T& a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}


struct SCC{//多重辺、自己辺ok
    int n,k=0;
    vector<vector<int>> g,rg;
    vector<vector<long long>> ret;
    vector<int> vs,cmp;//cmpは各頂点が縮約後のグラフでどの頂点に属するか、0~k-1の番号がトポロジカルソートして振られる。
    vector<bool> used;
    SCC(int _n){
        n=_n;
        g=vector<vector<int>>(n);rg=g;
        cmp=vector<int>(n);used=vector<bool>(n);
    }
    void add_edge(int f, int t){
        g[f].push_back(t);rg[t].push_back(f);
    }
    int init(){
        rep(i,n)if(!used[i])dfs(i);
        used=vector<bool>(n,false);
        per(i,n){
            if(!used[vs[i]]){
                rdfs(vs[i],k);
                k++;
            }
        }
        return k;
    }
    vector<vector<ll>> build(){//自己辺はないが多重辺あり
        ret.resize(k);
        rep(i,n){
            for(auto to:g[i]){
                if(cmp[i]==cmp[to])continue;
                ret[cmp[i]].push_back(cmp[to]);
            }
        }
        return ret;
    }
    private:
    void dfs(int v){
        used[v]=true;
        rep(i,g[v].size()){
            if(!used[g[v][i]])dfs(g[v][i]);
        }
        vs.push_back(v);
    }
    void rdfs(int v, int k){
        used[v]=true;cmp[v]=k;
        rep(i,rg[v].size()){
            if(!used[rg[v][i]]){
                rdfs(rg[v][i],k);
            }
        }
    }
};

struct twoSAT{
    vector<bool> ans;
    twoSAT(int _n):n(_n),graph(2*_n),ans(_n){}
    void add_edge(int i,bool x,int j,bool y){//( i V j ),falseは否定
        if(!x)i+=n;if(!y)j+=n;
        graph.add_edge((i+n)%(2*n),j);
        graph.add_edge((j+n)%(2*n),i);
    }
    bool exe(){
        graph.init();
        rep(i,n){
            if(graph.cmp[i]==graph.cmp[i+n])return false;
            else if(graph.cmp[i]>graph.cmp[i+n])ans[i]=true;
            else ans[i]=false;
        }
        return true;
    }
    private:
    int n;SCC graph;
};


class osak{
    vector<long long> res;
    public:
    vector<long long> prime;
    osak(long long n){//sieve(n),O(NloglogN);
        res=vector<long long>(n);
        iota(res.begin(), res.end(), 0);
        for (int i = 2; i*i < n; ++i) {
            if (res[i] < i) continue;
            for (int j = i*i; j < n; j += i)
            if (res[j] == j) res[j] = i;
        }
        for(int i = 2; i < n; ++i){
            if(res[i]==i)prime.emplace_back(i);
        }
    }

    map<long long,long long> factor(int n) {
        map<long long,long long> factor;
        while (n > 1) {
            factor[res[n]]++;
            n /= res[n];
        }
        return factor;
    }

    vector<long long> divisor(int N){//O(div.size())
        map<long long,long long> facs=factor(N);
        vector<long long> ret={1};
        for(auto p:facs){
            ll range=ret.size();
            ll now=1;
            for(int i=0;i<p.se;i++){
                now*=p.fi;
                for(int j=0;j<range;j++){
                    ret.emplace_back(ret[j]*now);
                }
            }
        }
        sort(ret.begin(),ret.end());
        return ret;
    }
};


int main(){
    ll n;cin >> n;
    vector<vector<string>> a(n,vector<string>(2));
    rep(i,n)cin >> a[i][0] >> a[i][1];
    osak os(1e6+10);
    twoSAT ts(n);
    /*rep(i,n){
        ts.add_edge(i,false,i+n,false);
    }*/
    rep(i,n){
        rep(j,n){
            rep(k,2){
                rep(t,2){
                    ll q=stoll(a[i][k]+a[j][t^1]);
                    if(binary_search(all(os.prime),q)){
                        ts.add_edge(i,k^1,j,t^1);
                    }
                }
            }
        }
    }
    if(ts.exe())cout << "Yes" << endl;
    else cout << "No" << endl;
}