#include<bits/stdc++.h>
using namespace std;
int main(){
    string s1;
    getline(cin,s1);
    int cnt=0;
    for(int i=0;i<s1.size();i++){
        if(s1[i]==' '){
            cnt++;
        }
    }
    for(int i=0;i<cnt;i++){
        cout<<" ";
    }
    for(int i=0;i<s1.size();i++){
        if(s1[i]!=' '){
            cout<<s1[i];
        }
    }
    return 0;
}
/**************************************************************
	Problem: 1102
	User: luyanchen
	Language: C++
	Result: Accepted
	Time:16 ms
	Memory:2076 kb
****************************************************************/