http://arc003.contest.atcoder.jp/tasks/arc003_2

arc003_2.js

process.stdin.resume();
process.stdin.setEncoding('utf8');
process.stdin.on('data', function (chunk) {
	var lines = chunk.split('\n');
	var len = parseInt(lines.shift(),10);
	var result = (function(words) {
		return words.map(function(word) {
			return word.split('').reverse().join('');
		})
		.sort()
		.map(function(word) {
			return word.split('').reverse().join('');
		})
		.join('\n');
	}(lines.slice(0,len)));

	console.log(result);
});