#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: xuanhua
	Language: C++
	Result: Accepted
	Time:18 ms
	Memory:2072 kb
****************************************************************/