function Main(input) {
    let src = input.replace("\n", "").split(" ");
    let a = parseInt(src[0]);
    let b = parseInt(src[1]);
    let c = src[2];
    let ans = "NO";
    switch (c) {
        case "<":
            if (a < b) ans = "YES";
            break;
        case ">":
            if (a > b) ans = "YES";
            break;
        case "=":
            if (a == b) ans = "YES";
            break;
    }
    console.log(ans);
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));