import sys
sys.setrecursionlimit(10 ** 6)
INF = float('inf')
MOD = 10**9 + 7
MOD2 = 998244353
def solve():
    def II(): return int(sys.stdin.readline())
    def LI(): return list(map(int, sys.stdin.readline().split()))
    def LC(): return list(input())
    def IC(): return [int(c) for c in input()]
    def MI(): return map(int, sys.stdin.readline().split())
    STC = list(map(str, sys.stdin.readline().split()))
    if(STC[2] == "<"):
        if(int(STC[0]) < int(STC[1])):
            print("YES")
        else:
            print("NO")
    elif(STC[2] == ">"):
        if(int(STC[0]) > int(STC[1])):
            print("YES")
        else:
            print("NO")
    else:
        if(int(STC[0]) == int(STC[1])):
            print("YES")
        else:
            print("NO")
    return
solve()