var readline = require('readline')
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout
});
var response = rl.question('', answer)
function answer(response) {
var result = response.toString().split(/\s+/).reverse().join(" ")
console.log(result);
rl.close();
}
//javascript操作字符串var readline = require('readline');const rl = readline.createInterface({input: process.stdin,output: process.stdout});rl.on('line', function(line){var tokens = line.split(' ');//先转换成字符串,翻转去前导零后返回console.log(line.split(' ').reverse().join(" "))});//我就是来测试牛客网的js环境的