let inp = readLine()!.split(separator: " ")
let S = Int(inp[0])
let T = Int(inp[1])

switch inp[2] {
    case "<":
        print(S! < T! ? "YES" : "NO")
    case ">":
        print(S! > T! ? "YES" : "NO")
    default:
        print(S! == T! ? "YES" : "NO")
}