"use strict";

var readable = process.stdin;
readable.resume();
readable.setEncoding( 'utf-8' );

readable.on( 'data', function( chunk ) {
		var data = chunk.split( ' ' );
		var a = parseInt( data[0] );
		var b = parseInt( data[1] );
		var c = parseInt( data[2] );
		if( a < b && b < c) {
			console.log( "Yes" );
		} else {
			console.log( "No" );
		}
});

