#include<iostream>

#include<vector>

#include<sstream>

using namespace std;

class Solution {

public:

void reverseWords(string &s) {

if(s.empty())

return;

stringstream ss(s);

string temp;

vector<string> v;

while(ss >> temp) {

v.push_back(temp);

}

if(v.size() == 0){

s = "";

return ;

}

for(int i=0, j=v.size()-1; i <= j; i++, j--){

string aa = v[i];

v[i] = v[j];

v[j] = aa;

}

s.clear();

s += v[0];

for(int i=1; i<v.size(); i++) {

s += " " + v[i];

}

cout << s;

}

};

int main() {

Solution s;

string str(" ");

s.reverseWords(str);

return 0;

}