#include <cstdio>
#include <cstring>
#include <iostream>
#include <string>
#include <cmath>
#include <bitset>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <algorithm>
#include <complex>
#include <unordered_map>
#include <unordered_set>
#include <random>
#include <cassert>
#include <fstream>
#include <utility>
#include <functional>
#include <time.h>
#include <stack>
#include <array>
#include <list>
#include <atcoder/all>
#define popcount __builtin_popcount
using namespace std;
using namespace atcoder;
typedef long long ll;
typedef pair<int, int> P;

int main()
{
    int s, t;
    char c;
    cin>>s>>t>>c;
    if(c=='='){
        cout<<(s==t?"YES":"NO")<<endl;
    }else if(c=='<'){
        cout<<(s<t?"YES":"NO")<<endl;
    }else{
        cout<<(s>t?"YES":"NO")<<endl;
    }
    return 0;
}