#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(LL i = a;i<b; i++)
#define rrep(i,a,b) for(LL i = a;i>=b; i--)
#define INF ((1LL<<62)-(1LL<<31))
#define ooki 9,223,372,036,854,775,807
#define tii -9,223,372,036,854,775,808
typedef long long LL;
int main(){
  int s,t;char c;
  cin >> s >> t >> c;
  if(c=='<'){if(s<t){cout<<"YES"<<endl;}
             else cout<<"NO"<<endl;
             }
  else if(c=='>'){if(s>t){cout<<"YES"<<endl;}
             else cout<<"NO"<<endl;
             }
  else if(c=='='){if(s==t){cout<<"YES"<<endl;}
             else cout<<"NO"<<endl;
             }
             
}