#include<bits/stdc++.h>
using namespace std;
int main(){
	int i,n=0;
	string s;
	getline(cin,s);
	for(i=0;i<s.size();i++){
		if(s[i]==' ') n++;
	}
	for(i=0;i<n;i++){
		cout<<" ";
	}
	for(i=0;i<s.size();i++){
		if(s[i]!=' ') cout<<s[i];
	}
	return 0;
}
/**************************************************************
	Problem: 1102
	User: houshanglin
	Language: C++
	Result: Accepted
	Time:24 ms
	Memory:2076 kb
****************************************************************/