#include <bits/stdc++.h>
    using namespace std;
    #include <math.h>
    #include <iomanip>
    #include <cstdint>
    #include <string>
    #include <sstream>
    template<class T> inline bool chmax(T& a, T b) { if (a <= b) { a = b; return 1; } return 0; }
    template<class T> inline bool chmin(T& a, T b) { if (a >= b) { a = b; return 1; } return 0; }
    #define rep(i,n) for (int i = 0; i < (n); ++i)
    typedef long long ll;
    using P=pair<ll,ll>;
    const int INF=1001001001;
    const int mod=998244353;
    
    bool f(int s,int t,char c){
        if(c=='<'){return s<t;}
        if(c=='>'){return s>t;}
        if(c=='='){return s==t;}
    }
    void solve(){
        int s,t;
        char c;
        cin>>s>>t>>c;
        if(f(s,t,c)){cout<<"YES"<<endl;}
        else{cout<<"NO"<<endl;}
    }
    int main(){
        ios_base::sync_with_stdio(false);
        cin.tie(NULL);
        solve();
        return 0;
    }