#include<iostream>
#include<string>
using namespace std;
int main()
{
    string str;
    getline(cin, str);
    int point = str.size()-1;
    int right = str.size();
    int left;
    bool flag = true;
    unsigned int len = str.size();
    for (int i = len - 1; i >= 0; i--)
    {
        if (str[i] != ' ')
        {
            flag = false;
            point--;
            continue;
        }
        if (!flag)
        {
            flag = true;
            left = point;
            point++;
            while (point != right)
            {
                cout << str[point];
                point++;
            }
            cout << " ";
            point = left - 1;
            right = left;
        }
        else
        {
            right = point;
            point--;
        }
    }
    point++;
    if (point != right)
    {
        while (point != right)
        {
            cout << str[point];
            point++;
        }
        cout << " ";
    }
    cout <<'\b';
    return 0;