#include <iostream>
#include <algorithm>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <numeric>
#include <bitset>
#include <cmath>

static const int MOD = 1000000007;
using ll = long long;
using u32 = unsigned;
using u64 = unsigned long long;
using namespace std;

template<class T> constexpr T INF = ::numeric_limits<T>::max() / 32 * 15 + 208;

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