'use strict';
(function(stdin) {
    var line = stdin.split('\n');
    var param = line[0].split(' ').map(Number);
    var result = (function(a, b, c) {
        return {
            true: 'Yes',
            false: 'No'
        }[(a < b && b < c)];
    }(param[0], param[1], param[2]));
    console.log(result);
}(require('fs').readFileSync('/dev/stdin', 'utf8')));