#include <bits/stdc++.h>
using namespace std;
char c[888];
int main()
{
    int n=0;
    cin.get(c,888);
    for(int i=0;i<888;i++)
    {
        if(c[i]==' ')
        {
            n++;
        }
    }
    for(int i=0;i<n;i++)
    {    
        cout<<' ';
    }
    for(int i=0;i<888;i++)
    {
        if(c[i]==' '||c[i]=='\0')
        {
            continue;
        }
        cout<<c[i];
    }
    return 0;
}
/**************************************************************
	Problem: 1102
	User: wuyichen
	Language: C++
	Result: Accepted
	Time:16 ms
	Memory:2072 kb
****************************************************************/