#define _USE_MATH_DEFINES

#include <iostream>		//cin, cout
#include <vector>		//vector
#include <algorithm>	//sort,min,max,count
#include <string>		//string,getline, to_string
#include <cstdlib>		//abs(int)
#include <utility>		//swap, pair
#include <deque>		//deque
#include <climits>		//INT_MAX
#include <bitset>		//bitset
#include <cmath>		//sqrt, ceil. M_PI, pow, sin
#include <ios>			//fixed
#include <iomanip>		//setprecision
#include <sstream>		//stringstream
#include <numeric>		//gcd, assumlate
#include <random>		//randam_device
#include <limits>		//numeric_limits

using namespace std;
constexpr long long int D_MOD = 1000000007;


int main() {

    int S, T;
    char c;
    cin >> S >> T >> c;

    switch (c) {
    case '<':
        if (S < T) { 
            cout << "YES" << endl;
        }
        else {
            cout << "NO" << endl;
        }
        break;
    case '>':
        if (S > T) {
            cout << "YES" << endl;
        }
        else {
            cout << "NO" << endl;
        }
        break;
    case '=':
        if (S == T) {
            cout << "YES" << endl;
        }
        else {
            cout << "NO" << endl;
        }
        break;
    }

    return 0;

}